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2 occurrences
- abbottii (Maytenus abbottii, Abarema abbottii)
- abdita (Hemitriakis abdita, Gastrotheca abdita)
- abitaguae (Polypodium abitaguae, Caecilia abitaguae)
- abrahamii (Dalbergia abrahamii, Leptolaena abrahamii)
- abrasus (Molossops abrasus, Cynomops abrasus)
- acaciae (Pseudagrion acaciae, Gazella gazella acaciae)
- aceramarcae (Marmosa aceramarcae, Gracilinanus aceramarcae)
- aceras (Xenophrys aceras, Megalophrys montana aceras)
- acerifolia (Begonia acerifolia, Quercus acerifolia)
- acervatus (Drymaeus acervatus, Orymaeus acervatus)
- achalensis (Odontophrynus achalensis, Bufo achalensis)
- achates (Semnopithecus entellus achates, Taphozous achates)
- acidens (Psammochromis acidens, Haplochromis acidens)
- acreana (Hydrochorea acreana, Amburana acreana)
- acrochorda (Ptychohyla acrochorda, Platymantis acrochorda)
- acuminatissima (Shorea acuminatissima, Neea acuminatissima)
- acunae (Vitex acunae, Sideroxylon acunae)
- acutidens (Pheidole acutidens, Negaprion acutidens)
- acutiflora (Sloanea acutiflora, Psychotria acutiflora)
- acutifolius (Podocarpus acutifolius, Durio acutifolius)
- acutipennis (Pseudocolopteryx acutipennis, Chordeiles acutipennis)
- adamantina (Tryonia adamantina, Austrochaperina adamantina)
- adami (Drepanosticta adami, Rhinolophus adami)
- adamsonii (Psychotria adamsonii, Myrsine adamsonii)
- adelaidensis (Litoria adelaidensis, Tiliqua adelaidensis)
- adelphe (Sphenophryne adelphe, Austrochaperina adelphe)
- adelphus (Bulimulus adelphus, Arthroleptis adelphus)
- adenopoda (Prunus adenopoda, Euphorbia adenopoda)
- adlerzi (Epimyrma adlerzi, Epimymra adlerzi)
- adpressa (Begonia adpressa, Lotononis adpressa)
- aedon (Acrocephalus aedon, Troglodytes aedon)
- aegyptiaca (Tadarida aegyptiaca, Alopochen aegyptiaca)
- aelleni (Myotis aelleni, Phrynobatrachus aelleni)
- aelocephalus (Haplochromis aelocephalus, Psammochromis aelocephalus)
- aequalis (Hopea aequalis, Trithemis aequalis)
- aequibasis (Asplenium aequibasis, Asplenium erectum aequibasis)
- aerosa (Kerivoula aerosa, Phoniscus aerosa)
- aerosus (Akodon aerosus, Melomys aerosus)
- aethereus (Nyctibius aethereus, Phaethon aethereus)
- affine (Exacum affine, Malacopteron affine)
- africanum (Aciagrion africanum, Poroderma africanum)
- agamae (Schefflera agamae, Connarus agamae)
- agami (Agamia agami, Shorea agami)
- agassizi (Salvelinus agassizi, Ambassis agassizi)
- agrestis (Hyla agrestis, Microtus agrestis)
- agricola (Pantinonemertes agricola, Acrocephalus agricola)
- agrioides (Amphipteryx agrioides, Platycnemis agrioides)
- ahenea (Bokermannohyla ahenea, Elliptio ahenea)
- ahli (Sciaenochromis ahli, Oedipus ahli)
- aimei (Hippocampus aimei)
- ajax (Cinclosoma ajax, Semnopithecus entellus ajax)
- alabamae (Palaemonias alabamae, Alosa alabamae)
- alachua (Branchinella alachua, Procambarus lucifugus alachua)
- alagoanus (Chiasmocleis alagoanus, Colostethus alagoanus)
- alaotrensis (Hapalemur griseus alaotrensis, Rheocles alaotrensis)
- alashanicus (Cervus elaphus alashanicus, Spermophilus alashanicus)
- alatum (Astrocaryum alatum, Clibadium alatum)
- albata (Parantica albata, Palaina albata)
- albatrus (Phoebastria albatrus, Diomedea albatrus)
- albertinae (Platymiscium albertinae, Streptocitta albertinae)
- albertisi (Aegotheles albertisi, Epimachus albertisi)
- albertisii (Pseudochirops albertisii, Gymnophaps albertisii)
- albicapilla (Cranioleuca albicapilla, Cossypha albicapilla)
- albicilla (Haliaeetus albicilla, Mohoua albicilla)
- albilabris (Boophis albilabris, Leptodactylus albilabris)
- albilora (Muscisaxicola albilora, Synallaxis albilora)
- albiloris (Oriolus albiloris, Polioptila albiloris)
- albipectus (Illadopsis albipectus, Pyrrhura albipectus)
- albipennis (Petrophassa albipennis, Penelope albipennis)
- albitorques (Columba albitorques, Philemon albitorques)
- albopunctata (Oreophryne albopunctata, Chiasmocleis albopunctata)
- alborosea (Guzmania alborosea, Scutellaria alborosea)
- albotorquatus (Cercopithecus mitis albotorquatus, Cercopithecus albogularis albotorquatus)
- albotuberculata (Rana albotuberculata, Rana everetti albotuberculata)
- albovittata (Peperomia albovittata, Hyla albovittata)
- album (Santalum album, Rhododendron album, Dictyosperma album album)
- alburnoides (Squalius alburnoides, Rutilus alburnoides)
- alcalicus (Oreochromis alcalicus, Alcolapia alcalicus)
- alcatraz (Bothrops alcatraz, Scinax alcatraz)
- alepidotus (Phoxinellus alepidotus, Paraphoxinus alepidotus)
- alfari (Sigmodontomys alfari, Microsciurus alfari)
- alfaroi (Oedipina alfaroi, Oryzomys alfaroi)
- alfredii (Livistona alfredii, Euphorbia alfredii)
- alfredschmidti (Uromastyx alfredschmidti, Ctenosaura alfredschmidti)
- algirus (Psammodromus algirus, Atelerix algirus)
- aliciae (Aglaeactis aliciae, Nyctibatrachus aliciae)
- alinae (Nectarinia alinae, Eriocnemis alinae)
- alius (Malaconotus alius, Otus alius)
- allisoni (Liophryne allisoni, Choerophryne allisoni)
- allynsmithi (Sonorella allynsmithi, Helminthoglypta allynsmithi)
- alnifolia (Schumacheria alnifolia, Melanophylla alnifolia)
- alopex (Falco alopex, Mirafra alopex)
- aloysiisabaudiae (Potamonautes aloysiisabaudiae, Chaerephon aloysiisabaudiae)
- altae (Eleutherodactylus altae, Scinax altae)
- altamazonica (Bolitoglossa altamazonica, Argenteohyla altamazonica)
- altirostris (Turdoides altirostris, Scytalopus altirostris)
- altivelis (Cromileptes altivelis, Lepidomeda altivelis)
- alvaradoi (Bolitoglossa alvaradoi, Hyla alvaradoi)
- alvarezi (Gambusia alvarezi, Cyprinodon alvarezi)
- alvarezii (Ceratozamia alvarezii, Knema alvarezii)
- alvaroi (Pristidactylus alvaroi, Guevaria alvaroi)
- amamiensis (Rana amamiensis, Asiagomphus amamiensis amamiensis)
- amaurocephalus (Hylophilus amaurocephalus, Leptopogon amaurocephalus)
- amazonum (Centranthus amazonum, Zamia amazonum)
- amboniensis (Gulella amboniensis, Platycypha amboniensis)
- amboroensis (Bufo amboroensis, Inga amboroensis)
- ambrosii (Hydromantes ambrosii, Speleomantes ambrosii)
- ameero (Boswellia aff. ameero, Boswellia ameero)
- amethystina (Nectarinia amethystina, Calliphlox amethystina)
- amethystinus (Phapitreron amethystinus, Lampornis amethystinus)
- amicorum (Itaya amicorum, Dendropsophus amicorum)
- amicus (Phyllotis amicus, Lestes amicus)
- ammon (Ovis ammon ammon, Ovis ammon)
- amnicola (Hylodes amnicola, Amnirana amnicola)
- amplectens (Ouratea amplectens, Bidens amplectens)
- amygdalina (Pouteria amygdalina, Pongamiopsis amygdalina)
- anae (Paramorariopsis anae, Eleutherodactylus anae)
- anamallayana (Symplocos anamallayana, Cryptocarya anamallayana)
- anatipes (Chiasmocleis anatipes, Craugastor anatipes)
- andecola (Petrochelidon andecola, Haplochelidon andecola)
- anderseni (Artibeus anderseni, Rhinolophus anderseni)
- andreettae (Guzmania andreettae, Vriesea andreettae)
- anelpistus (Diploglossus anelpistus, Celestus anelpistus)
- angamarcanum (Elaphoglossum angamarcanum, Piper angamarcanum)
- angorae (Varicorhinus angorae, Nemacheilus angorae)
- angularis (Sinocyclocheilus angularis, Oxymycterus angularis)
- angulatus (Pipistrellus angulatus, Euonymus angulatus)
- angustatus (Claudius angustatus, Procambarus angustatus)
- angustilineata (Eleutherodactylus angustilineata, Isthmohyla angustilineata)
- angustior (Melanophylla angustior, Vertigo angustior)
- angustissima (Polyalthia angustissima, Sarcostemma angustissima)
- angustum (Falcatifolium angustum, Sideroxylon angustum)
- ankaranensis (Erythrina ankaranensis, Glossogobius ankaranensis)
- anna (Calypte anna, Ciridops anna)
- annamiticus (Axis porcinus annamiticus, Rhinoceros sondaicus annamiticus)
- annulata (Rhinoclemmys annulata, Trithemis annulata)
- annulatum (Ceriagrion annulatum, Ambystoma annulatum)
- anomalum (Sideroxylon anomalum, Clerodendrum anomalum)
- anonymus (Cisticola anonymus, Hylodes anonymus)
- anselli (Centropus anselli, Cryptomys anselli)
- antillarum (Myiarchus antillarum, Sterna antillarum)
- antineae (Heterohyrax antineae, Heterohyrax brucei antineae)
- antiquus (Synthliboramphus antiquus, Boucardicus antiquus)
- antisanensis (Loricaria antisanensis, Aphanactis antisanensis)
- antoniae (Carpodectes antoniae, Telmatherina antoniae)
- anubis (Papio anubis, Papio hamadryas anubis)
- apalachicolae (Desmognathus apalachicolae, Procambarus apalachicolae)
- apetala (Ruprechtia apetala, Anisophyllea apetala)
- appendiculatus (Rhacophorus appendiculatus, Eleutherodactylus appendiculatus)
- apperti (Bernieria apperti, Phyllastrephus apperti)
- apurimacensis (Euphorbia apurimacensis, Weinmannia apurimacensis)
- aquilonia (Austrochaperina aquilonia, Formica aquilonia)
- aquilus (Gerbillus aquilus, Lophiobagrus aquilus)
- arboreum (Petrobium arboreum, Viburnum arboreum)
- arbutifolia (Chosenia arbutifolia, Baccharis arbutifolia)
- arcaeformis (Dysnomia arcaeformis, Epioblasma arcaeformis)
- arcana (Appalachia arcana, Rimanella arcana)
- arcasii (Chondrostoma arcasii, Rutilus arcasii)
- arctica (Fratercula arctica, Gavia arctica)
- arenaria (Catinella arenaria, Schoepfia arenaria)
- arendsi (Chlorotalpa arendsi, Carpitalpa arendsi)
- arfakensis (Myristica arfakensis, Melanotaenia arfakensis)
- arfakiana (Melanocharis arfakiana, Litoria arfakiana)
- argentauris (Leiothrix argentauris, Lichmera argentauris)
- ariadne (Scinax ariadne, Orachrysops ariadne)
- arianae (Eugenia arianae, Hyla arianae)
- aricomae (Cinclodes aricomae, Cinclodes excelsior aricomae)
- aridulus (Cisticola aridulus, Grammomys aridulus)
- arisanensis (Hynobius arisanensis, Ilex arisanensis)
- arizonica (Cupressus arizonica, Pinus arizonica)
- armandii (Pinus armandii, Phylloscopus armandii)
- armenica (Crocidura armenica, Sicista armenica)
- armillata (Cyanolyca armillata, Fulica armillata)
- arnhemica (Cycas arnhemica arnhemica, Cycas arnhemica)
- arquata (Cichladusa arquata, Numenius arquata)
- artaxerxes (Harpagochromis artaxerxes, Haplochromis artaxerxes)
- arthuri (Atelopus arthuri, Vertigo arthuri)
- articulata (Tropidophora articulata, Tetraclinis articulata)
- artus (Chaetodipus artus, Hygrotus artus)
- ascanius (Cercopithecus ascanius, Parides ascanius)
- ascendens (Huperzia ascendens, Miconia ascendens)
- ashei (Magnolia macrophylla ashei, Juniperus ashei)
- asio (Megascops asio, Otus asio)
- asperata (Picea asperata, Quadrula asperata)
- asperrima (Eximiorhagada asperrima, Amnirana asperrima)
- astreans (Acestrura astreans, Chaetocercus astreans)
- atabapensis (Annona atabapensis, Guatteria atabapensis)
- atelopoides (Phyllomedusa atelopoides, Andinophryne atelopoides)
- atjehensis (Horsfieldia atjehensis, Podocarpus atjehensis)
- atollensis (Sesbania coccinea atollensis, Achyranthes atollensis)
- atrifrons (Odontophorus atrifrons, Zosterops atrifrons)
- atroflavus (Laniarius atroflavus, Pogoniulus atroflavus)
- atrox (Kerivoula atrox, Phoniscus atrox)
- auaritae (Gallotia auaritae, Gallotia simonyi auaritae)
- aucheri (Rhus aucheri, Quercus aucheri)
- aucklandica (Coenocorypha aucklandica, Anas aucklandica)
- aurelioi (Lacerta aurelioi, Iberolacerta aurelioi)
- aureoventris (Pheucticus aureoventris, Chlorostilbon aureoventris)
- auricapillus (Icterus auricapillus, Aratinga auricapillus)
- auriculatus (Desmognathus auriculatus, Eleutherodactylus auriculatus)
- aurora (Maylandia aurora, Rana aurora)
- aurusbergensis (Crassula aurusbergensis, Tylecodon aurusbergensis)
- australasia (Todiramphus australasia, Todirhamphus australasia)
- australasica (Macquaria australasica, Helicia australasica)
- australiensis (Aglaia australiensis, Rhynchochydorus australiensis)
- avernalis (Fluminicola avernalis, Pyrgulopsis avernalis)
- avia (Plectrohyla avia, Cryptotis avia)
- avius (Eleutherodactylus avius, Doratogonus avius)
- axelrodi (Cynotilapia axelrodi, Chilatherina axelrodi)
- ayarzaguenai (Colostethus ayarzaguenai, Osteocephalus ayarzaguenai)
- ayresii (Hieraaetus ayresii, Cisticola ayresii)
- azuayense (Brachyotum azuayense, Paspalum azuayense)
- babaulti (Simochromis babaulti, Myosorex babaulti)
- babax (Hylodes babax, Eleutherodactylus babax)
- baccata (Bourreria baccata, Taxus baccata)
- bachmani (Haematopus bachmani, Sylvilagus bachmani)
- bactrianus (Cervus elaphus bactrianus, Camelus bactrianus)
- baerii (Acipenser baerii, Acipenser baerii baerii)
- baeticus (Dussartius baeticus, Aphanius baeticus)
- baikalensis (Acipenser baerii baikalensis, Epischura baikalensis)
- bailloni (Pteroglossus bailloni, Baillonius bailloni)
- baillonii (Shorea macroptera baillonii, Cymbopetalum baillonii)
- bairdi (Vireo bairdi, Oreomystis bairdi)
- bakeriana (Hymenostegia bakeriana, Brachystegia bakeriana)
- bakossii (Keetia bakossii, Coffea bakossii)
- balbus (Cophixalus balbus, Mixophyes balbus)
- balcanica (Rana balcanica, Rupicapra rupicapra balcanica)
- balcanicus (Salmo balcanicus, Zingel balcanicus)
- balfouri (Hyperolius balfouri, Nectarinia balfouri)
- banae (Euphorbia banae, Leptobrachium banae)
- banatica (Imnadia banatica, Zubovskia banatica)
- bancana (Hopea bancana, Deplanchea bancana)
- bancoensis (Cussonia bancoensis, Placodiscus bancoensis)
- bangsi (Grallaria bangsi, Perognathus longimembris bangsi)
- banksiana (Pinus banksiana, Neolalage banksiana)
- banksii (Cycas media banksii, Calyptorhynchus banksii)
- bantamensis (Vatica bantamensis, Vavaea bantamensis)
- barbadensis (Juniperus barbadensis barbadensis, Juniperus barbadensis, Amazona barbadensis)
- barbarabrownae (Callicebus barbarabrownae, Callicebus personatus barbarabrownae)
- barlowi (Maylandia barlowi, Certhilauda barlowi)
- baronii (Dalbergia baronii, Neoharmsia baronii)
- barri (Caecidotea barri, Stygobromus barri)
- bartelsi (Spizaetus bartelsi, Hylopetes bartelsi)
- barthi (Biomphalaria barthi, Bulinus barthi)
- bartlettii (Cryosophila bartlettii, Metrosideros bartlettii)
- bartschi (Cyclura carinata bartschi, Collocalia bartschi)
- basalis (Grammitis basalis, Chrysococcyx basalis)
- battersbyi (Indotyphlus battersbyi, Dendropsophus battersbyi)
- baudii (Pitta baudii, Dipterocarpus baudii)
- baudinii (Calyptorhynchus baudinii, Smilisca baudinii)
- baumanni (Phyllastrephus baumanni, Hyperolius baumanni)
- baunti (Coregonus sardinella baunti, Coregonus baunti)
- baurii (Scalesia baurii baurii, Scalesia baurii)
- bavaricus (Microtus bavaricus, Pitymys bavaricus)
- baverstocki (Vespadelus baverstocki, Eptesicus baverstocki)
- baxteri (Bufo baxteri, Etmopterus baxteri)
- beatrix (Chalinolobus beatrix, Glauconycteris beatrix)
- beatus (Crocidura beatus, Hipposideros beatus)
- beckeri (Hypsiboas beckeri, Phylloscartes beckeri)
- bedriagai (Chalcides bedriagai, Acanthodactylus bedriagai)
- beecrofti (Anomalurus beecrofti, Anomalurops beecrofti)
- behnii (Glyphonycteris behnii, Micronycteris behnii)
- belcheri (Pachyptila belcheri, Larus belcheri)
- beldingi (Spermophilus beldingi, Geothlypis beldingi)
- belizense (Sideroxylon floribundum belizense, Zanthoxylum belizense)
- bellicosa (Hirundinea bellicosa, Sturnella bellicosa)
- bellula (Achatinella bellula, Elimia bellula)
- bellulus (Margarornis bellulus, Amolops bellulus)
- belvica (Chalcalburnus belvica, Alburnus belvica)
- benetos (Melanochromis benetos, Maylandia benetos)
- bennetti (Casuarius bennetti, Corvus bennetti)
- benoistii (Euphorbia benoistii, Miconia benoistii)
- benthamianum (Brachyotum benthamianum, Syzygium benthamianum)
- benthicola (Ctenochromis benthicola, Sciaenochromis benthicola)
- beoticus (Pseudophoxinus beoticus, Telestes beoticus)
- bequaertii (Pterygota bequaertii, Memecylon bequaertii)
- berlandieri (Rana berlandieri, Gopherus berlandieri)
- bernalii (Chigua bernalii, Orphanodendron bernalii)
- bernsteini (Centropus bernsteini, Sterna bernsteini)
- bernsteinii (Ptilinopus bernsteinii, Megapodius bernsteinii)
- berteriana (Dendroseris berteriana, Albizia berteriana)
- berthalutzae (Dendropsophus berthalutzae, Dendrophryniscus berthalutzae)
- betsileanus (Ptychochromoides betsileanus, Mantidactylus betsileanus)
- betsileo (Mantella betsileo, Heterixalus betsileo)
- betsileoensis (Astacoides betsileoensis, Brachyuromys betsileoensis)
- beyeri (Necturus beyeri, Chaperina beyeri)
- bezoarticus (Ozotoceros bezoarticus bezoarticus, Ozotoceros bezoarticus)
- bhutanica (Pinus bhutanica, Bazzania bhutanica)
- biaculeatus (Sygnathoides biaculeatus, Syngnathoides biaculeatus)
- biarmicus (Panurus biarmicus, Falco biarmicus)
- bicalcaratus (Mantidactylus bicalcaratus, Francolinus bicalcaratus)
- biemarginata (Epioblasma biemarginata, Dysnomia biemarginata)
- bifax (Nyctophilus bifax, Bulweria bifax)
- bifida (Gonzalagunia bifida, Trithemis bifida)
- bifrenatus (Barbus bifrenatus, Telmatochromis bifrenatus)
- bifurcata (Myristica bifurcata bifurcata, Wodyetia bifurcata)
- bifurcatum (Elaphoglossum bifurcatum, Calophyllum bifurcatum)
- bifurcus (Chiloglanis bifurcus, Dendropsophus bifurcus)
- bimaculatus (Pycnonotus bimaculatus, Rhacophorus bimaculatus)
- binata (Rytigynia binata, Pinus radiata binata, Paradrymonia binata)
- binoculata (Dipturus binoculata, Raja binoculata)
- binotata (Nandinia binotata, Apalis binotata)
- binotatus (Eleutherodactylus binotatus, Caprimulgus binotatus)
- biplicata (Lamellidea biplicata, Arinia biplicata)
- biporcatus (Craugastor biporcatus, Bufo biporcatus)
- biroi (Oreophryne biroi, Cophixalus biroi)
- birostris (Ocyceros birostris, Manta birostris)
- bispina (Malgassophlebia bispina, Phyllomacromia bispina)
- bitorquatus (Pteroglossus bitorquatus, Rhinoptilus bitorquatus)
- blacki (Orconectes blacki, Cambarellus blacki)
- blainvillei (Pontoporia blainvillei, Echimys blainvillei)
- blainvillii (Peltops blainvillii, Mormoops blainvillii)
- blanchonii (Ochrothallus blanchonii, Niemeyera blanchonii)
- blanfordii (Paa blanfordii, Bufo blanfordii)
- blasii (Rhinolophus blasii, Myzomela blasii)
- blewitti (Athene blewitti, Heteroglaux blewitti)
- blighi (Myophonus blighi, Myiophonus blighi)
- blochii (Rhinobatos blochii, Eusphyra blochii)
- blommersae (Boophis blommersae, Mantidactylus blommersae)
- blumutensis (Diospyros blumutensis, Shorea blumutensis)
- bodenheimeri (Hypsugo bodenheimeri, Pipistrellus bodenheimeri)
- boehmei (Tarentola boehmei, Boophis boehmei)
- boesemani (Melanotaenia boesemani, Scinax boesemani)
- boiei (Proceratophrys boiei, Myzomela boiei)
- boiviniana (Delonix boiviniana, Dypsis boiviniana)
- bolivianum (Glaucidium bolivianum, Nototrema bolivianum)
- bolosii (Arenaria bolosii, Arenaria grandiflora bolosii)
- bombayensis (Philautus bombayensis, Ichthyophis bombayensis)
- bombus (Chaetocercus bombus, Acestrura bombus)
- bombycinus (Hibiscadelphus bombycinus, Thomasomys bombycinus)
- bonasia (Aphanapteryx bonasia, Bonasa bonasia)
- bonasus (Bison bonasus, Rhinoptera bonasus)
- bonelli (Phylloscopus bonelli, Padogobius bonelli)
- boonsongi (Parahelicops boonsongi, Opisthotropis boonsongi)
- borbae (Skutchia borbae, Phlegopsis borbae)
- boreale (Gloeospermum boreale, Gymnostomum boreale)
- borenensis (Vepris borenensis, Teclea borenensis)
- borysthenicus (Petroleuciscus borysthenicus, Leuciscus borysthenicus)
- botnica (Pusa hispida botnica, Phoca hispida botnica)
- bottegi (Phrynobatrachus bottegi, Crocidura bottegi)
- boucardi (Amazilia boucardi, Crypturellus boucardi)
- boueti (Typhlosynbranchus boueti, Monopterus boueti)
- bougainvillei (Actenoides bougainvillei, Stresemannia bougainvillei)
- bourreti (Paa bourreti, Leptolalax bourreti)
- bovinus (Pteromylaeus bovinus, Cyprinodon bovinus)
- boyeri (Coracina boyeri, Atherina boyeri)
- boylii (Peromyscus boylii, Rana boylii)
- braccatus (Moho braccatus, Epipedobates braccatus)
- brachycarpum (Exostema brachycarpum, Alloxylon brachycarpum)
- brachydactylus (Hemisus brachydactylus, Batrachophrynus brachydactylus)
- brachykolos (Megophrys minor brachykolos, Xenophrys brachykolos)
- brachytarsus (Indirana brachytarsus, Polypedates brachytarsus)
- brachythrix (Eugenia brachythrix, Rinorea brachythrix)
- bracteatum (Calophyllum bracteatum, Sium bracteatum)
- bracteosus (Cleistanthus bracteosus, Placodiscus bracteosus)
- bradei (Cipocereus bradei, Holoaden bradei)
- bradfieldi (Apus bradfieldi, Tockus bradfieldi)
- brahma (Niviventer brahma, Trachypithecus pileatus brahma)
- brama (Fejervarya brama, Athene brama)
- brantsii (Parotomys brantsii, Tatera brantsii)
- brasiliana (Cercomacra brasiliana, Hydropsalis brasiliana)
- brasiliense (Tonatia brasiliense, Lophostoma brasiliense)
- braunii (Tacinga braunii, Angylocalyx braunii)
- bravoanus (Ariocarpus bravoanus bravoanus, Ariocarpus bravoanus)
- brazieri (Bothriembryon brazieri, Ostodes brazieri)
- bredoi (Gomphidia bredoi, Paragomphus bredoi)
- breedlovei (Symplocos breedlovei, Hampea breedlovei)
- brenchleyi (Ducula brenchleyi, Pupina brenchleyi)
- brevibarbis (Ancharius brevibarbis, Arius brevibarbis)
- brevidens (Dysnomia brevidens, Epioblasma brevidens)
- breviflora (Myristica velutina breviflora, Trichilia breviflora)
- brevifolius (Calpocalyx brevifolius, Podocarpus brevifolius)
- brevifrons (Eleutherodactylus brevifrons, Dendropsophus brevifrons)
- breviloba (Pavetta johnstonii breviloba, Alstonia breviloba)
- brevinasus (Dipodomys nitratoides brevinasus, Perognathus longimembris brevinasus)
- brevipalmata (Fejervarya brevipalmata, Litoria brevipalmata)
- brevipennis (Acrocephalus brevipennis, Vireo brevipennis)
- brevipinnis (Barbus brevipinnis, Torquigener brevipinnis)
- brevituba (Robinsonella brevituba, Neisosperma brevituba)
- brieni (Paracyprichromis brieni, Scinax brieni)
- brissonii (Cyanocompsa brissonii, Passerina brissonii)
- brittonii (Nectandra brittonii, Ardisia brittonii)
- broadbenti (Peroryctes broadbenti, Dasyornis broadbenti)
- brochidodroma (Nectandra brochidodroma, Micropholis brochidodroma)
- brockmani (Gerbillus brockmani, Myomyscus brockmani)
- brodiei (Glaucidium brodiei, Nototriton brodiei)
- bromelicola (Colostethus bromelicola, Sphaenorhynchus bromelicola)
- brooksi (Delanymys brooksi, Otopharynx brooksi)
- brownae (Astatotilapia brownae, Haplochromis brownae)
- brumbacki (Aotus brumbacki, Aotus lemurinus brumbacki)
- brunneicauda (Alcippe brunneicauda, Newtonia brunneicauda)
- bryantae (Philodice bryantae, Calliphlox bryantae)
- buccinator (Eleutherodactylus buccinator, Cygnus buccinator)
- bucculentus (Sus bucculentus, Urolophus bucculentus)
- budaki (Ablepharus budaki, Ablepharus kitaibellii budaki)
- bufonius (Leptodactylus bufonius, Eleutherodactylus bufonius)
- bullocki (Brachygalaxias bullocki, Telmatobufo bullocki)
- bullockii (Icterus bullockii, Jatropha bullockii)
- bulweri (Lophura bulweri, Discula bulweri)
- burduricus (Aphanius burduricus, Arctodiaptomus burduricus)
- bureschi (Barbatula bureschi, Nemacheilus bureschi)
- burgeri (Kirkia burgeri burgeri, Boophis burgeri)
- burkillii (Garcinia burkillii, Lithocarpus burkillii)
- buruensis (Zosterops buruensis, Ficedula buruensis)
- buryi (Sylvia buryi, Parisoma buryi)
- buselaphus (Alcelaphus buselaphus, Alcelaphus buselaphus buselaphus)
- bussei (Millettia bussei, Leptactina delagoensis bussei)
- buxifolia (Peperomia buxifolia, Valeriana buxifolia)
- byrnei (Dasycercus byrnei, Dasyuroides byrnei)
- cadornae (Pipistrellus cadornae, Hypsugo cadornae)
- caelata (Trichia caelata, Miconia caelata)
- caerulatus (Garrulax caerulatus, Cyornis caerulatus)
- caesariata (Miconia caesariata, Freziera caesariata)
- caffra (Jubaeopsis caffra, Cossypha caffra)
- cagayanensis (Hopea cagayanensis, Platymantis cagayanensis)
- calamianensis (Chiropodomys calamianensis, Axis calamianensis)
- calandra (Miliaria calandra, Melanocorypha calandra)
- calcadensis (Eugenia calcadensis, Rhacophorus calcadensis)
- caledonicus (Platycercus caledonicus, Nycticorax caledonicus)
- californiense (Ambystoma tigrinum californiense, Ambystoma californiense)
- caliginosus (Melanomys caliginosus, Eleutherodactylus caliginosus)
- callensis (Pseudophoxinus callensis, Barbus callensis)
- callidryas (Agalychnis callidryas taylori, Agalychnis callidryas)
- calliope (Luscinia calliope, Stellula calliope)
- callistoderma (Helminthoglypta callistoderma, Boninena callistoderma)
- callizonus (Jokajdon callizonus, Xenotriccus callizonus)
- callophrys (Tangara callophrys, Chlorophonia callophrys)
- callotis (Oryx gazella callotis, Lepus callotis)
- calocoma (Helicia calocoma, Microcycas calocoma)
- calopterum (Ascoglossum calopterum, Todirostrum calopterum)
- calurus (Criniger calurus, Sekeetamys calurus)
- cambodiana (Dalbergia cambodiana, Arborophila cambodiana)
- camelopardalis (Hippocampus camelopardalis, Giraffa camelopardalis)
- camelus (Struthio camelus, Epigomphus camelus)
- campanisona (Chamaeza campanisona, Myrmothera campanisona)
- campi (Syrrhophus campi, Batrachoseps campi)
- campioni (Allorrhizucha campioni, Neodythemis campioni)
- campylotheca (Bidens campylotheca, Bidens campylotheca campylotheca)
- camtschatica (Sorex camtschatica, Marmota camtschatica)
- canagica (Anser canagica, Chen canagica)
- canaliculatum (Palaquium canaliculatum, Anthurium canaliculatum)
- canarensis (Munnozia canarensis, Hopea canarensis)
- cancellata (Chlorocypha cancellata, Prosobonia cancellata)
- cancrivora (Rana cancrivora raja, Fejervarya cancrivora)
- candei (Manacus candei, Synallaxis candei)
- candicans (Caprimulgus candicans, Eleothreptus candicans)
- candidum (Memecylon candidum, Ophisternon candidum)
- candidus (Melanerpes candidus, Propithecus diadema candidus)
- candollei (Piper candollei, Entandrophragma candollei)
- canestrinii (Cochlostoma canestrinii, Pomatoschistus canestrinii)
- canifrons (Spizixos canifrons, Gallicolumba canifrons)
- caninus (Trichosurus caninus, Barbus caninus)
- canis (Mustelus canis, Barbus canis)
- cantator (Hypocnemis cantator, Phylloscopus cantator)
- cantillans (Mirafra cantillans, Sylvia cantillans)
- canutus (Calidris canutus, Apristurus canutus)
- capillipes (Xylosma capillipes, Zimmermannia capillipes)
- capistrata (Heterophasia capistrata, Nesocharis capistrata)
- capistratus (Muscisaxicola capistratus, Serinus capistratus)
- capixaba (Colostethus capixaba, Chiasmocleis capixaba)
- capreolus (Pelea capreolus, Capreolus capreolus)
- capsaeformis (Epioblasma capsaeformis, Dysnomia capsaeformis)
- captivus (Xenoophorus captivus, Dendrobates captivus)
- capucinus (Cebus capucinus, Cebus capucinus capucinus)
- caramaschii (Crossodactylus caramaschii, Bokermannohyla caramaschii)
- caraya (Lysapsus caraya, Alouatta caraya)
- carbonaria (Diglossa carbonaria, Cercomacra carbonaria)
- carchiensis (Pentacalia carchiensis, Calamagrostis carchiensis)
- caribaeus (Vireo caribaeus, Contopus caribaeus)
- caribbaea (Pterodroma caribbaea, Pterodroma hasitata caribbaea)
- cariei (Typhlops cariei, Unio cariei)
- carinatum (Distichophyllum carinatum, Electron carinatum)
- carmelitae (Eleutherodactylus carmelitae, Phalanger carmelitae)
- carmioli (Chlorothraupis carmioli, Vireo carmioli)
- carolina (Terrapene carolina, Porzana carolina)
- carolinus (Euphagus carolinus, Melanerpes carolinus)
- carolitertii (Squalius carolitertii, Leuciscus carolitertii)
- carpalis (Aimophila carpalis, Bradypterus carpalis)
- carpinifolia (Mildbraedia carpinifolia, Zelkova carpinifolia)
- carpio (Cyprinus carpio, Salmo carpio)
- carraui (Diploglossus carraui, Celestus carraui)
- carri (Neoharriotta carri, Bolitoglossa carri)
- carruthersi (Cisticola carruthersi, Funisciurus carruthersi)
- cascadae (Rhyacotriton cascadae, Rana cascadae)
- caseyi (Delphinium caseyi, Delphinium fissum caseyi)
- casparii (Eleutherodactylus casparii, Eleutherodactylus planirostris casparii)
- caspica (Pusa caspica, Phoca caspica)
- cassius (Psammochromis cassius, Haplochromis cassius)
- castaneae (Ectodemia castaneae, Multidentia castaneae)
- castaneothorax (Lonchura castaneothorax, Cinclosoma castaneothorax)
- castaneoticus (Bufo castaneoticus, Dendrobates castaneoticus)
- castaniceps (Yuhina castaniceps, Seicercus castaniceps)
- castanotus (Colius castanotus, Turnix castanotus)
- catalinae (Arctostaphylos catalinae, Craugastor catalinae)
- cataphractus (Cordylus cataphractus, Crocodylus cataphractus)
- caucasicus (Tetraogallus caucasicus, Pelodytes caucasicus)
- caudatum (Entandrophragma caudatum, Calophyllum caudatum)
- caudopunctatus (Paramesotriton caudopunctatus, Neolamprologus caudopunctatus)
- cauliflorus (Calpocalyx cauliflorus, Phyllanthus cauliflorus)
- caurensis (Percnostola caurensis, Schistocichla caurensis)
- cauta (Thalassarche cauta, Hylacola cauta)
- cavator (Bufo cavator, Orthogeomys cavator)
- cavernicolus (Atlantasellus cavernicolus, Asellus aquaticus cavernicolus)
- cavirostris (Ziphius cavirostris, Philautus cavirostris)
- cayanus (Vanellus cayanus, Cyanocorax cayanus)
- cazaletii (Centropogon cazaletii, Pentacalia cazaletii)
- cebifrons (Sus cebifrons cebifrons, Sus cebifrons)
- cebuensis (Phylloscopus cebuensis, Copsychus cebuensis)
- cedrorum (Euphorbia cedrorum, Bombycilla cedrorum)
- celaeno (Rhodothraupis celaeno, Nyctimene celaeno)
- cembra (Pinus cembra, Plectrohyla cembra)
- cephaliomelana (Facheiroa cephaliomelana, Facheiroa cephaliomelana cephaliomelana)
- cephaloides (Leuciscus cephaloides, Squalius cephaloides)
- cephalophus (Elaphodus cephalophus cephalophus, Elaphodus cephalophus)
- cephalus (Squalius cephalus, Leuciscus cephalus)
- ceratophrys (Hyla ceratophrys, Bufo ceratophrys)
- cerradensis (Dendropsophus cerradensis, Thalpomys cerradensis)
- certhioides (Ochetorhynchus certhioides, Upucerthia certhioides)
- cerulea (Procelsterna cerulea, Dendroica cerulea)
- cerverai (Ferminia cerverai, Cyanolimnas cerverai)
- cetti (Cettia cetti, Natrix natrix cetti)
- ceylonicus (Heliogomphus ceylonicus, Pipistrellus ceylonicus)
- chaetocarpa (Diospyros chaetocarpa, Commiphora chaetocarpa)
- chaiana (Areca chaiana, Shorea chaiana)
- chalcides (Chalcides chalcides, Chalcides chalcides mertensi)
- chalconota (Ducula chalconota, Rana chalconota)
- chalcopterus (Pionus chalcopterus, Rhinoptilus chalcopterus)
- chalcurus (Lamprotornis chalcurus, Ptilinopus chalcurus)
- chalybeus (Lophornis chalybeus, Centropus chalybeus)
- championii (Rhodoleia championii, Pseudocarapa championii)
- chantrei (Aphanius chantrei, Barbus chantrei)
- chapelieri (Calophyllum chapelieri, Dalbergia chapelieri)
- chappuisi (Eudiaptomus chappuisi, Bufo chappuisi)
- chartacea (Anisophyllea chartacea, Vatica chartacea)
- chayunensis (Rana maculosa chayunensis, Paa chayunensis)
- cheatumi (Stenotrema leai cheatumi, Tryonia cheatumi)
- cheesmani (Nyctimystes cheesmani, Gerbillus cheesmani)
- chengii (Juniperus chengii, Abies chengii)
- chensiensis (Abies chensiensis, Abies chensiensis chensiensis)
- cherrieri (Trigonostemon cherrieri, Terminalia cherrieri)
- chica (Hyla chica, Bolitoglossa chica)
- chienii (Macropanax chienii, Pseudotaxus chienii)
- chimaera (Ornithoptera chimaera, Uratelornis chimaera)
- chimboanum (Diplazium chimboanum, Philodendron chimboanum)
- chionogaster (Amazilia chionogaster, Accipiter chionogaster)
- chiribogensis (Aiphanes chiribogensis, Pseudogynoxys chiribogensis)
- chirindensis (Apalis chirindensis, Allophylus chirindensis)
- chiriquiensis (Licania chiriquiensis, Atelopus chiriquiensis)
- chlorocercus (Lorius chlorocercus, Leucippus chlorocercus)
- chloroptera (Myzomela chloroptera, Aratinga chloroptera)
- chloropus (Gallinula chloropus, Arborophila chloropus)
- chocolatinus (Spelaeornis chocolatinus, Dioptrornis chocolatinus)
- choliba (Megascops choliba, Otus choliba)
- chontalensis (Meriania drakei chontalensis, Centropogon chontalensis)
- chromogynos (Paralabidochromis chromogynos, Haplochromis chromogynos)
- chrysomela (Leontopithecus chrysomela, Monarcha chrysomela)
- chrysonotus (Cacicus chrysonotus, Copadichromis chrysonotus)
- chrysopterus (Cacicus chrysopterus, Masius chrysopterus)
- chrysopygus (Rhynchocyon chrysopygus, Leontopithecus chrysopygus)
- chrysotis (Alcippe chrysotis, Tangara chrysotis)
- chrysotricha (Irenella chrysotricha, Polyalthia chrysotricha)
- chudeaui (Bufo chudeaui, Acomys chudeaui)
- chungarensis (Trichomycterus chungarensis, Orestias chungarensis)
- churinceanus (Mexipyrgus churinceanus churinceanus, Mexithauma churinceanus quadripaludium)
- ciliatus (Lasianthus ciliatus, Lanistes ciliatus)
- cinereicollis (Tamias cinereicollis, Basileuterus cinereicollis)
- cinereifrons (Garrulax cinereifrons, Heteromyias cinereifrons)
- cinereiventris (Microbates cinereiventris, Chaetura cinereiventris)
- cinnamomeiventris (Ochthoeca cinnamomeiventris, Myrmecocichla cinnamomeiventris)
- cinnamomeum (Cinclosoma cinnamomeum, Solanum cinnamomeum)
- circumdatus (Pipistrellus circumdatus, Arielulus circumdatus)
- cirratus (Picumnus cirratus, Pristiophorus cirratus)
- cirrocephalus (Accipiter cirrocephalus, Larus cirrocephalus)
- citreogularis (Sericornis citreogularis, Philemon citreogularis)
- citrifolia (Nectandra citrifolia, Buxus citrifolia)
- citrinellus (Atlapetes citrinellus, Saimiri oerstedii citrinellus)
- clamans (Spiloptila clamans, Baeopogon clamans)
- clamosus (Atrichornis clamosus, Cuculus clamosus)
- clarki (Rhytida clarki, Ctenosaura clarki)
- clathratum (Piper clathratum, Anthurium clathratum)
- claudiae (Phylloscopus claudiae, Dendrobates claudiae)
- claudinae (Trochoidea claudinae, Barbus claudinae)
- clausa (Pinus clausa, Elimia clausa)
- clavigera (Diospyros clavigera, Peripatopsis clavigera)
- clemenciae (Xiphophorus clemenciae, Lampornis clemenciae)
- clementis (Prunus clementis, Peromyscus maniculatus clementis)
- clipeata (Leptoxis clipeata, Nepenthes clipeata)
- coacta (Myristica coacta, Hadrothemis coacta)
- coahuila (Terrapene coahuila, Mexistenasellus coahuila)
- coahuilensis (Abies durangensis coahuilensis, Quercus coahuilensis, Juniperus coahuilensis)
- cobitis (Rhinichthys cobitis, Tiaroga cobitis)
- coccineus (Loxops coccineus, Calochaetes coccineus)
- cochinchinense (Cratoxylum cochinchinense, Dialium cochinchinense)
- cockburnii (Drypetes cockburnii, Heliciopsis cockburnii)
- coeruleocapilla (Lepidothrix coeruleocapilla, Pipra coeruleocapilla)
- coffeus (Dendropsophus coffeus, Craugastor coffeus)
- cogolloi (Cybianthus cogolloi, Caryodaphnopsis cogolloi)
- colanensis (Telmatobius colanensis, Gynoxys colanensis)
- colchicus (Phasianus colchicus, Bufo colchicus)
- colei (Pogonomyrmex colei, Colea colei)
- colensoi (Manoao colensoi, Phalacrocorax colensoi)
- colletti (Polypedates colletti, Rattus colletti)
- colliei (Calocitta colliei, Hydrolagus colliei)
- collinum (Calophyllum collinum, Pittosporum collinum)
- colomai (Eleutherodactylus colomai, Andinophryne colomai)
- colombiensis (Leptodactylus colombiensis, Diplobatis colombiensis)
- colonensis (Quiina colonensis, Ardisia colonensis)
- coloradensis (Acroloxus coloradensis, Clethra coloradensis)
- coloradorum (Matisia coloradorum, Physalaemus coloradorum)
- coloratus (Glaucomys sabrinus coloratus, Myadestes coloratus)
- comeri (Gallinula comeri, Gallinula nesiotis comeri)
- comes (Hippocampus comes, Ogasawarana comes)
- cometes (Procambarus cometes, Grammomys cometes)
- commersonii (Cephalorhynchus commersonii, Cylindrocline commersonii)
- commutata (Abarema commutata, Calceolaria commutata)
- comorensis (Nectarinia comorensis, Rhachis comorensis)
- complanata (Pseudanodonta complanata, Pupina complanata, Picea brachytyla complanata)
- compressiceps (Altolamprologus compressiceps, Dimidiochromis compressiceps)
- comptonii (Protea comptonii, Retrophyllum comptonii)
- comptus (Trogon comptus, Callulops comptus)
- conanti (Bolitoglossa conanti, Pseudoeurycea conanti)
- condensata (Uniola condensata, Eragrostis condensata)
- condorensis (Guzmania condorensis, Macaca fascicularis condorensis)
- confertum (Brachyotum confertum, Sideroxylon confertum)
- confusum (Cephalophyllum confusum, Calophyllum confusum)
- congensis (Afropavo congensis, Nectarinia congensis)
- congestum (Asplenium congestum, Moxostoma congestum)
- conglomerata (Macaranga conglomerata, Eugenia conglomerata)
- conjuncta (Bidens conjuncta, Kaloula conjuncta)
- connivens (Ninox connivens, Uvariodendron connivens)
- conoveri (Leptotila conoveri, Ctenomys conoveri)
- conradti (Halolimnohelix conradti, Pseudoglessula conradti)
- consanguis (Gomphus consanguis, Gomphurus consanguis)
- consors (Helminthoglypta sequoicola consors, Caseolus consors)
- conspicillata (Procellaria conspicillata, Sylvia conspicillata)
- constanciae (Bactris constanciae, Cynolebias constanciae)
- constricta (Bellamya constricta, Aaadonta constricta)
- contermina (Planchonella contermina, Pouteria contermina)
- continuatalis (Hedylepta continuatalis, Omiodes continuatalis)
- contracta (Gastonia sechellarum contracta, Parartemia contracta, Bellamya contracta)
- conversii (Popelairia conversii, Discosura conversii)
- copei (Dicamptodon copei, Spelerpes copei)
- copelandii (Cyanea copelandii copelandii, Cyanea copelandii)
- coppingeri (Caccotus coppingeri, Eupsophus coppingeri)
- coqui (Francolinus coqui, Eleutherodactylus coqui)
- cor (Fusconaia cor, Cardioderma cor)
- cordobae (Hypsiboas cordobae, Odontophrynus cordobae)
- cordulatum (Piper cordulatum, Anthurium cordulatum)
- corensis (Columba corensis, Patagioenas corensis)
- coriaceum (Pittosporum coriaceum, Caryocar coriaceum)
- corniculatus (Epigomphus corniculatus, Philemon corniculatus)
- coromandus (Clamator coromandus, Bubo coromandus)
- corpulenta (Pleurocera corpulenta, Caecilia corpulenta)
- corticalis (Hyla corticalis, Rhacophorus corticalis)
- corticosum (Cinnamodendron corticosum, Memecylon corticosum)
- coruscans (Colibri coruscans, Neodrepanis coruscans)
- coryi (Puma concolor coryi, Schizoeaca coryi)
- coryphaeus (Pogoniulus coryphaeus, Erythropygia coryphaeus)
- corythaix (Basilornis corythaix, Tauraco corythaix)
- costae (Onychogomphus costae, Calypte costae)
- costalis (Podocarpus costalis, Gonystylus costalis)
- costaricanum (Glaucidium costaricanum, Viburnum costaricanum)
- costaricense (Dichapetalum costaricense, Caryocar costaricense)
- costatus (Dipterocarpus costatus, Xylotoles costatus)
- cotiellae (Pyrenaearia cotiellae, Pyrenaeania cotiellae)
- coucang (Nycticebus coucang coucang, Nycticebus coucang)
- couchii (Tyrannus couchii, Scaphiopus couchii)
- couesi (Oryzomys couesi, Rhipidomys couesi)
- coulteri (Pinus coulteri, Guaiacum coulteri)
- cowani (Microgale cowani, Microtus townsendii cowani)
- coxi (Stefania coxi, Hipposideros coxi)
- crassifolius (Palaeocyanus crassifolius, Cheirolophus crassifolius)
- crassinervis (Casearia crassinervis, Gymnadenia crassinervis)
- crassipes (Maytenus crassipes, Conraua crassipes)
- crassipetala (Eugenia crassipetala, Psychotria crassipetala)
- crassulus (Hypsugo crassulus, Pipistrellus crassulus)
- cremnobates (Eleutherodactylus cremnobates, Ovis canadensis cremnobates)
- crenatum (Opeas nothapalinus crenatum, Xylosma crenatum)
- crenulata (Rhamnus crenulata, Sebastiania crenulata)
- crepidater (Centroscymnus crepidater, Centroselachus crepidater)
- cretensis (Boyeria cretensis, Rana cretensis)
- cretica (Capra aegagrus cretica, Macrothele cretica)
- cridlandi (Coelatura cridlandi, Cleopatra cridlandi)
- crinifrons (Muntiacus crinifrons, Aegotheles crinifrons)
- crinita (Dypsis crinita, Coccothrinax crinita crinita)
- crissalis (Vermivora crissalis, Pipilo crissalis)
- cristatellus (Acridotheres cristatellus, Cyanocorax cristatellus)
- cristatum (Hymenophyllum cristatum, Zygogynum cristatum)
- croatica (Sorbus austriaca croatica, Knipowitschia croatica)
- crocatus (Neurergus crocatus, Neurergus crocatus kaiseri)
- crockeri (Laticauda crockeri, Scalesia crockeri)
- crombiei (Physalaemus crombiei, Colostethus crombiei)
- crosnieri (Astacoides crosnieri, Dipturus crosnieri)
- cruciata (Melicope cruciata, Hemipilia cruciata)
- cruciatus (Elaeocarpus cruciatus, Urolophus cruciatus)
- cruciforme (Antidesma cruciforme, Lepismium cruciforme)
- crumeniferus (Hipposideros crumeniferus, Leptoptilos crumeniferus)
- cruralis (Cincloramphus cruralis, Eleutherodactylus cruralis)
- cruzi (Craugastor cruzi, Dendropsophus cruzi)
- cryptica (Rana cryptica, Oreophrynella cryptica)
- cryptoleuca (Progne cryptoleuca, Peneothello cryptoleuca)
- cryptoleucus (Corvus cryptoleucus, Thamnophilus cryptoleucus)
- cryptolophus (Lipaugus cryptolophus, Snowornis cryptolophus)
- cryptoxanthus (Myiophobus cryptoxanthus, Poicephalus cryptoxanthus)
- cryptus (Nectophrynoides cryptus, Cypseloides cryptus)
- cuatrecasasii (Joseanthus cuatrecasasii, Pradosia cuatrecasasii)
- cubanus (Eleutherodactylus cubanus, Solenodon cubanus)
- cubense (Cinnamodendron cubense, Euchorium cubense)
- cuculoides (Glaucidium cuculoides, Aviceda cuculoides)
- cuicochensis (Viola cuicochensis, Gynoxys cuicochensis)
- culveri (Antrobia culveri, Lirceus culveri)
- cundalli (Eleutherodactylus cundalli glaucoreius, Eleutherodactylus cundalli)
- cunicularia (Geositta cunicularia, Athene cunicularia)
- cunicularius (Sylvilagus cunicularius, Leptodactylus cunicularius)
- cupreonitens (Chrysobatrachus cupreonitens, Fissistigma cupreonitens)
- cupressoides (Fitzroya cupressoides, Athrotaxis cupressoides)
- cuprosus (Arielulus cuprosus, Pipistrellus cuprosus)
- curtatus (Lemmiscus curtatus, Allocricetulus curtatus)
- curtisi (Epioblasma florentina curtisi, Dysnomia florentina curtisi)
- curtyana (Laplacea curtyana, Gordonia curtyana)
- curvirostra (Loxia curvirostra, Treron curvirostra)
- cutucuense (Piper cutucuense, Anthurium cutucuense)
- cuvierii (Phaeochroa cuvierii, Falco cuvierii)
- cyanescens (Terpsiphone cyanescens, Galbula cyanescens)
- cyanicollis (Galbula cyanicollis, Tangara cyanicollis)
- cyanopectus (Alcedo cyanopectus, Sternoclyta cyanopectus)
- cyanopogon (Chloropsis cyanopogon, Cyanocorax cyanopogon)
- cyanopus (Agelaius cyanopus, Agelasticus cyanopus)
- cyanoventris (Halcyon cyanoventris, Tangara cyanoventris)
- cyathiformis (Eschweilera cyathiformis, Heisteria cyathiformis)
- cychlura (Cyclura cychlura cychlura, Cyclura cychlura)
- cycladen (Bufo cycladen)
- cyclotis (Nyctimene cyclotis, Murina cyclotis)
- cylindrellus (Toxolasma cylindrellus, Carunculina cylindrellus)
- cylindricus (Ceratogymna cylindricus, Bycanistes cylindricus)
- cylindrifolia (Euphorbia cylindrifolia, Euphorbia cylindrifolia cylindrifolia)
- cypriensis (Hierophis cypriensis, Coluber cypriensis)
- cystignathoides (Eleutherodactylus cystignathoides, Syrrhopus cystignathoides)
- dabbenei (Eumops dabbenei, Penelope dabbenei)
- daemon (Tachyoryctes daemon, Acacia daemon)
- daenikeri (Planchonella daenikeri, Eugenia daenikeri)
- daguerrei (Oxyepoecus daguerrei, Solenopsis daguerrei)
- dalmaticus (Strongylognathus dalmaticus, Phoxinellus dalmaticus)
- dalmatina (Cobitis dalmatina, Rana dalmatina)
- dalstroemii (Guzmania dalstroemii, Dendrophthora dalstroemii)
- daltoni (Praomys daltoni, Myomys daltoni)
- damii (Paretroplus damii, Xenopirostris damii)
- danatensis (Bufo danatensis taxkorensis, Bufo danatensis)
- danfordi (Lacerta danfordi anatolica, Eudontomyzon danfordi)
- danielae (Bufo danielae, Fallicambarus danielae)
- daphne (Thomasomys daphne, Poecilmitis daphne)
- darienense (Aspidosperma darienense, Brosimum utile darienense)
- daryi (Craugastor daryi, Adelphicos daryi)
- dasypus (Delichon dasypus, Plectrohyla dasypus)
- daubentonii (Myotis daubentonii, Myopterus daubentonii)
- dauricus (Huso dauricus, Spermophilus dauricus)
- dauuricus (Mesechinus dauuricus, Corvus dauuricus)
- davidiana (Keteleeria davidiana, Montifringilla davidiana)
- davisoni (Pseudibis davisoni, Phylloscopus davisoni)
- dawsoni (Bythaelurus dawsoni, Halaelurus dawsoni)
- daymani (Nyctimystes daymani, Cophixalus daymani)
- deceptor (Palpopleura deceptor, Leptogryllus deceptor)
- deceptrix (Annona deceptrix, Raimondia deceptrix)
- decidua (Ceropegia decidua, Larix decidua)
- decoratus (Pterocles decoratus, Craugastor decoratus)
- decorticata (Tristania decorticata, Sinployea decorticata)
- decrescens (Manilkara decrescens, Calliandra decrescens)
- decticostoma (Prognathochromis decticostoma, Haplochromis decticostoma)
- decumanus (Psarocolius decumanus, Proechimys decumanus)
- decurrens (Calocedrus decurrens, Humboldtia decurrens)
- degener (Eleutherodactylus degener, Telmatobius degener)
- degenerata (Caecilia degenerata, Leiostyla degenerata)
- delalandii (Tomopterna delalandii, Tarentola delalandii)
- delegorguei (Columba delegorguei, Coturnix delegorguei)
- delticola (Oligoryzomys delticola, Oryzomys delticola)
- deminuta (Diplacodes deminuta, Annona deminuta)
- dendrobates (Phrynobatrachus dendrobates, Anthurium dendrobates)
- dendyi (Pseudophryne dendyi, Streptocephalus dendyi)
- dentifera (Arinia dentifera, Partula dentifera)
- dentirostris (Scenopoeetes dentirostris, Ailuroedus dentirostris)
- deppeana (Chamaesyce deppeana, Juniperus deppeana)
- depressiceps (Mantidactylus depressiceps, Hyla depressiceps)
- derbyanus (Hemigalus derbyanus, Macropus eugenii derbyanus)
- desmarestii (Megalomys desmarestii, Psittaculirostris desmarestii)
- desolata (Cycas desolata, Pachyptila desolata)
- destructor (Cherax destructor, Oligoryzomys destructor)
- devia (Quercus devia, Neotoma devia)
- dewegeri (Serranus dewegeri, Paralabrax dewegeri)
- dewinteri (Kirkia dewinteri, Aloe dewinteri)
- dhonti (Synodontis dhonti, Telmatochromis dhonti)
- diabolicus (Eurostopodus diabolicus, Batrachoseps diabolicus)
- diardi (Lophura diardi, Phaenicophaeus diardi)
- dichotoma (Hyphaene dichotoma, Acioa dichotoma)
- dichrous (Parus dichrous, Pitohui dichrous)
- dickeyi (Peromyscus dickeyi, Cyanocorax dickeyi)
- dictyoneura (Acalypha dictyoneura, Pouteria dictyoneura dictyoneura)
- diffusa (Wissadula diffusa, Lophophora diffusa)
- diluta (Macaca radiata diluta, Rhipidura diluta)
- diminutiva (Grandisonia diminutiva, Micrixalus diminutiva)
- dinae (Arrojadoa dinae dinae, Arrojadoa dinae)
- dingo (Canis lupus dingo, Canis familiaris dingo)
- diodon (Harpagus diodon, Charpentieria diodon)
- dioptrica (Phocoena dioptrica, Australophocaena dioptrica)
- dioscoridis (Duvaliandra dioscoridis, Ruellia dioscoridis)
- diospyroides (Vatica diospyroides, Ilex diospyroides)
- diphyllum (Cryptosepalum diphyllum, Pellegriniodendron diphyllum)
- diploconos (Cyphomandra diploconos, Solanum diploconos)
- diptychus (Leptodactylus diptychus, Bufo diptychus)
- diptyx (Adenomera diptyx, Leptodactylus diptyx)
- discifera (Thyroptera discifera, Eugenia discifera)
- discodactylus (Vanzolinius discodactylus, Hyperolius discodactylus)
- discoidea (Mutisia discoidea, Nothofagus discoidea)
- discors (Anas discors, Eugenia discors)
- dissimulans (Miconia dissimulans, Lestes dissimulans)
- divaricata (Pauridiantha divaricata, Aspatharia divaricata)
- divaricatus (Pericrocotus divaricatus, Hemiphractus divaricatus)
- diversus (Neochanna diversus, Euastacus diversus)
- dives (Dives dives, Hylopezus dives)
- divisa (Scalesia divisa, Crocothemis divisa)
- dohrni (Horizorhinus dohrni, Palaina dohrni)
- dohrnii (Ramphodon dohrnii, Glaucis dohrnii)
- dolichopetala (Desmopsis dolichopetala, Rollinia dolichopetala)
- dolichopoda (Cyanea dolichopoda, Quararibea dolichopoda)
- dolichura (Crocidura dolichura, Sminthopsis dolichura)
- dollmani (Maxomys dollmani, Otomys dollmani)
- domesticus (Passer domesticus, Mus domesticus)
- dominica (Dendroica dominica, Pluvialis dominica)
- dominicana (Paroaria dominicana, Heteroxolmis dominicana)
- dominicanus (Larus dominicanus, Xolmis dominicanus)
- dongnaiensis (Mangifera dongnaiensis, Zollingeria dongnaiensis)
- dorbignyi (Bufo dorbignyi, Asthenes dorbignyi)
- dormeri (Pipistrellus dormeri, Scotozous dormeri)
- dorsoviridis (Polypedates dorsoviridis, Rhacophorus schlegelii dorsoviridis)
- douglasorum (Eptesicus douglasorum, Vespadelus douglasorum)
- draco (Apodemus draco, Dracaena draco)
- dracomontana (Rana dracomontana, Afrana dracomontana)
- drakeana (Hernandia drakeana, Meryta drakeana)
- drakei (Meriania drakei drakei, Meriania drakei)
- dransfieldii (Ravenea dransfieldii, Dypsis dransfieldii)
- dringi (Xenophrys dringi, Leptolalax dringi)
- drudei (Livistona drudei, Wettinia drudei)
- drummondii (Callitris drummondii, Tarenna drummondii)
- drupacea (Juniperus drupacea, Cephalotaxus harringtonia drupacea)
- dubiaquercus (Antrozous dubiaquercus, Bauerus dubiaquercus)
- dubitus (Thorius dubitus, Eleutherodactylus dubitus)
- dulitensis (Rhacophorus dulitensis, Ichthyophis dulitensis)
- dumerilii (Ambystoma dumerilii, Limnodynastes dumerilii)
- dumetorum (Acrocephalus dumetorum, Psidium dumetorum)
- dumicola (Euaraliopsis dumicola, Polioptila dumicola)
- dumosa (Quercus dumosa, Tsuga dumosa)
- dunckeri (Solegnathus dunckeri, Phallostethus dunckeri)
- duponti (Gonospira duponti, Chersophilus duponti)
- dura (Guatteria dura, Alseodaphne dura)
- duranti (Nephelobates duranti, Hyalinobatrachium duranti)
- durranti (Onychomys leucogaster durranti, Onchomys leucogaster durranti)
- dwyeri (Inga dwyeri, Chalinolobus dwyeri)
- eatoni (Komarekiona eatoni, Anas eatoni)
- ebenoides (Diospyros ebenoides, Atelopus ebenoides)
- eburnea (Pagophila eburnea, Dephomys eburnea)
- ecclesi (Bellamya ecclesi, Diplotaxodon ecclesi)
- ecuadoriense (Lepidium ecuadoriense, Geranium ecuadoriense)
- edax (Andinomys edax, Olallamys edax)
- ega (Scleronycteris ega, Lasiurus ega)
- egeria (Glauconycteris egeria, Chalinolobus egeria)
- egregius (Calamus egregius, Lasiurus egregius)
- egridiri (Phoxinellus egridiri, Pseudophoxinus egridiri)
- ehrenbergi (Nannospalax ehrenbergi, Rana cyanophlyctis ehrenbergi)
- eichhorni (Philemon eichhorni, Myzomela eichhorni)
- eickii (Calodendrum eickii, Rytigynia eickii)
- eiselti (Atretochoana eiselti, Mantidactylus eiselti)
- ekmani (Pisonia ekmani, Caprimulgus ekmani)
- elberti (Phrynobatrachus elberti, Rana elberti)
- eldii (Cervus eldii eldii, Cervus eldii)
- elegantissima (Diospyros elegantissima, Euphonia elegantissima)
- elisabeth (Myadestes elisabeth, Lamprotornis elisabeth)
- ellipsiprymnus (Kobus ellipsiprymnus, Kobus ellipsiprymnus ellipsiprymnus)
- ellipsoideum (Osmoxylon ellipsoideum, Elaphoglossum ellipsoideum)
- emirnensis (Dalbergia emirnensis, Euphorbia emirnensis)
- enigma (Todirhamphus enigma, Todiramphus enigma)
- enterophora (Euphorbia enterophora enterophora, Euphorbia enterophora)
- eos (Carpodacus eos, Bulimulus eos)
- ephippium (Geochelone nigra ephippium, Brachycephalus ephippium)
- epicentra (Hedylepta epicentra, Omiodes epicentra)
- epieni (Procolobus pennantii epieni, Procolobus badius epieni)
- episcopus (Ciconia episcopus, Thraupis episcopus)
- epunctata (Garcinia epunctata, Copaifera epunctata)
- eremicus (Peromyscus eremicus, Sigmodon hispidus eremicus)
- eremitus (Eleutherodactylus eremitus, Leiocephalus eremitus)
- erhardii (Podarcis erhardii, Podarcis erhardii gaigeae)
- ericae (Tryonia ericae, Hypsiboas ericae)
- erinaceus (Clavicoccus erinaceus, Hippocampus erinaceus)
- eriophora (Sarcolaena eriophora, Kerivoula eriophora)
- erythraeus (Callosciurus erythraeus, Centropogon erythraeus)
- erythromelas (Myzomela erythromelas, Periporphyrus erythromelas)
- erythromos (Epipedobates erythromos, Sturnira erythromos)
- erythronotos (Estrilda erythronotos, Formicivora erythronotos)
- erythrophthalma (Lophura erythrophthalma, Netta erythrophthalma)
- erythropleura (Eleutherodactylus erythropleura, Ptiloprora erythropleura)
- erythropterus (Aprosmictus erythropterus, Heliolais erythropterus)
- erythrorhynchos (Pelecanus erythrorhynchos, Dicaeum erythrorhynchos)
- erythrorhynchus (Buphagus erythrorhynchus, Tockus erythrorhynchus)
- erythrurus (Terenotriccus erythrurus, Acanthodactylus erythrurus)
- esculentus (Oreochromis esculentus, Echinus esculentus)
- espiritosantensis (Campomanesia espiritosantensis, Tadarida espiritosantensis)
- estevesii (Facheiroa cephaliomelana estevesii, Tacinga saxatilis estevesii)
- estherae (Serinus estherae, Maylandia estherae)
- estor (Haplochromis estor, Prognathochromis estor)
- etheridgei (Eleutherodactylus etheridgei, Placostylus bivaricosus etheridgei)
- etindensis (Impatiens etindensis, Ardisia etindensis)
- eugeniae (Ptilinopus eugeniae, Eleutherodactylus eugeniae)
- eugenioi (Xenohyla eugenioi, Aplastodiscus eugenioi)
- euleri (Coccyzus euleri, Lathrotriccus euleri)
- eulophotes (Egretta eulophotes, Lophotriccus eulophotes)
- euphronides (Eleutherodactylus urichi euphronides, Eleutherodactylus euphronides)
- eupogon (Metallura eupogon, Xenoclarias eupogon)
- eurasius (Stenobothrodes eurasius, Stenobothrus eurasius)
- eurycerus (Tragelaphus eurycerus eurycerus, Tragelaphus eurycerus)
- eurydactylus (Eleutherodactylus eurydactylus, Callulops eurydactylus)
- euryphylla (Pouteria euryphylla, Schefflera euryphylla)
- euryprora (Omiodes euryprora, Hedylepta euryprora)
- eurystomus (Satan eurystomus, Centropogon eurystomus)
- eva (Peromyscus eva, Eothenomys eva)
- eversmanni (Columba eversmanni, Allocricetulus eversmanni)
- ewingii (Acanthiza ewingii, Litoria ewingii)
- excellens (Campylopterus excellens, Lovenula excellens)
- excisus (Colostethus excisus, Calycolpus excisus)
- excubitor (Lanius excubitor, Gastrotheca excubitor)
- explorator (Monticola explorator, Zosterops explorator)
- exquisita (Melanotaenia exquisita, Plectrohyla exquisita)
- exspectata (Pseudoeurycea exspectata, Copiula exspectata)
- externa (Fagara externa, Pterodroma externa)
- exulans (Diomedea exulans, Rattus exulans)
- eytoni (Xiphorhynchus eytoni, Dendrocygna eytoni)
- faber (Rana faber, Hypsiboas faber)
- faberi (Leptothorax faberi, Eulophia faberi)
- fadenii (Coffea fadenii, Diphasiopsis fadenii)
- fagani (Prunella fagani, Lepus fagani)
- fagerlindii (Asplundia fagerlindii, Peperomia fagerlindii)
- falciferoides (Shorea falciferoides, Shorea falciferoides falciferoides)
- falcirostris (Xiphocolaptes falcirostris, Sporophila falcirostris)
- falconeri (Capra falconeri falconeri, Capra falconeri)
- falklandicus (Nastanthus falklandicus, Charadrius falklandicus)
- fallai (Oligosoma fallai, Deinacrida fallai)
- famatamboay (Euphorbia famatamboay, Euphorbia famatamboay famatamboay)
- famulus (Mus famulus, Gerbillus famulus)
- fanshawei (Eschweilera fanshawei, Cassipourea fanshawei)
- farquhari (Todiramphus farquhari, Todirhamphus farquhari)
- farreri (Cypripedium farreri, Picea farreri)
- fasciculatum (Clinopodium fasciculatum, Oncosperma fasciculatum)
- fasciculispina (Paa fasciculispina, Rana fasciculispina)
- fascinans (Elimia fascinans, Microeca fascinans)
- fatuhivensis (Melicope fatuhivensis, Ochrosia fatuhivensis)
- felina (Lutra felina, Lontra felina)
- feriarum (Pseudacris triseriata feriarum, Pseudacris feriarum)
- fernandezae (Physalaemus fernandezae, Bufo fernandezae)
- fernandeziana (Myrceugenia fernandeziana, Sophora fernandeziana)
- fernandoi (Spiralothelphusa fernandoi, Centrolene fernandoi)
- ferrea (Hopea ferrea, Aniba ferrea)
- ferreus (Aneides ferreus, Saxicola ferreus)
- ficiforme (Canthium ficiforme, Dysoxylum ficiforme)
- filosa (Partula filosa, Rhodacme filosa)
- fimbriatum (Callocephalon fimbriatum, Sideroxylon fimbriatum)
- finchi (Rana microdisca finchi, Limnonectes finchi)
- finetiana (Platanthera finetiana, Habenaria finetiana)
- fissilis (Flectonotus fissilis, Cedrela fissilis)
- flabellata (Hemipilia flabellata, Heliconia flabellata)
- flammeolus (Megascops flammeolus, Otus flammeolus)
- flammeus (Pericrocotus flammeus, Asio flammeus)
- flanaganii (Greyia flanaganii, Cassipourea flanaganii)
- flavicapilla (Chloropipo flavicapilla, Xenopipo flavicapilla)
- flavicauda (Lagothrix flavicauda, Oreonax flavicauda)
- flaviflora (Gentianella flaviflora, Shorea flaviflora)
- flaviijosephi (Astatotilapia flaviijosephi, Haplochromis flaviijosephi)
- flavimembris (Lyciasalamandra flavimembris, Bolitoglossa flavimembris)
- flavipunctata (Litoria flavipunctata)
- flavolineatus (Osteocephalus flavolineatus, Bufo flavolineatus)
- flavopictus (Leptodactylus flavopictus, Epipedobates flavopictus)
- flavopunctata (Caecilia flavopunctata, Cochranella flavopunctata)
- flavum (Zanthoxylum flavum, Epimedium flavum)
- fleischmanni (Craugastor fleischmanni, Hyalinobatrachium fleischmanni)
- fletcheri (Lechriodus fletcheri, Limnodynastes fletcheri)
- fleuryi (Camellia fleuryi, Nageia fleuryi)
- flinti (Macromia flinti, Epigomphus flinti)
- flocculosa (Salvia flocculosa, Horsfieldia flocculosa)
- floribundum (Sideroxylon floribundum floribundum, Astronidium floribundum)
- florida (Hyptis florida, Tangara florida)
- floridanus (Sylvilagus floridanus, Podomys floridanus)
- floris (Treron floris, Spizaetus floris)
- flosculus (Quintalia flosculus, Loriculus flosculus)
- fluminea (Porzana fluminea, Melanatria fluminea)
- fluminensis (Myrmotherula fluminensis, Chionanthus fluminensis)
- fluvialis (Hopea fluvialis, Io fluvialis)
- fodiens (Neomys fodiens, Smilisca fodiens)
- foersteri (Melidectes foersteri, Henicophaps foersteri)
- foetens (Psychotria foetens, Ocotea foetens)
- foetida (Guzmania foetida, Mangifera foetida)
- foetidum (Homalium foetidum, Carum foetidum)
- fontinalis (Phoxinellus fontinalis, Cyprinodon fontinalis)
- fontqueri (Moehringia fontqueri, Betula pendula fontqueri)
- fordii (Erythrophleum fordii, Habenaria fordii)
- formosae (Treron formosae, Dendrocitta formosae)
- formosanum (Acer buergerianum formosanum, Cypripedium formosanum)
- fortunei (Cephalotaxus fortunei, Keteleeria fortunei, Cephalotaxus fortunei fortunei)
- fosbergi (Tubuaia fosbergi, Opanara fosbergi)
- fossilis (Misgurnis fossilis, Misgurnus fossilis)
- fosteri (Gustavia fosteri, Myrcia fosteri)
- fosteriana (Inga fosteriana, Guzmania fosteriana)
- foveolata (Pouteria foveolata, Aglaia foveolata)
- foxiana (Litsea foxiana, Alseodaphne foxiana)
- freibergi (Labidochromis freibergi, Physalaemus freibergi)
- frenata (Mustela frenata, Geotrygon frenata)
- frenatus (Chaetops frenatus, Lichenostomus frenatus)
- fringilloides (Lonchura fringilloides, Dolospingus fringilloides)
- frithii (Impatiens frithii, Coelops frithii)
- frontata (Presbytis frontata, Tricholaema frontata)
- frontatus (Ateles geoffroyi frontatus, Falcunculus frontatus)
- frosti (Philoria frosti, Neopteryx frosti)
- fruhstorferi (Hylaeothemis fruhstorferi, Rhacophorus fruhstorferi)
- fruticosa (Woodfordia fruticosa, Graderia fruticosa)
- fucata (Emberiza fucata, Alopochelidon fucata)
- fuchsi (Orcula fuchsi, Belgrandiella fuchsi)
- fukienensis (Rana fukienensis, Rana plancyi fukienensis)
- fuliginea (Ansonia fuliginea, Llerasia fuliginea)
- fuligula (Hirundo fuligula, Aythya fuligula)
- fullawayi (Hedylepta fullawayi, Omiodes fullawayi)
- fultoni (Pisidium fultoni, Beddomeia fultoni)
- fulvifrons (Empidonax fulvifrons, Paradoxornis fulvifrons)
- fulvigula (Anas fulvigula, Timeliopsis fulvigula)
- fulvilanatus (Pilosocereus fulvilanatus, Pilosocereus fulvilanatus fulvilanatus)
- fulvipectus (Apodemus fulvipectus, Rhynchocyclus fulvipectus)
- fulvorufula (Redunca fulvorufula, Redunca fulvorufula fulvorufula)
- fumifrons (Poecilotriccus fumifrons, Todirostrum fumifrons)
- fumosa (Chaetura fumosa, Crocidura fumosa)
- fumosus (Pappogeomys fumosus, Heimyscus fumosus)
- furax (Siphocampylus furax, Emballonura furax)
- furvus (Peromyscus furvus, Palawanomys furvus)
- fuscater (Turdus fuscater, Catharus fuscater)
- fuscicapillus (Corvus fuscicapillus, Philemon fuscicapillus)
- fuscicauda (Habia fuscicauda, Ramphotrigon fuscicauda)
- fuscorufa (Rhipidura fuscorufa, Synallaxis fuscorufa)
- fuscotaeniatus (Nimbochromis fuscotaeniatus, Nothobranchius fuscotaeniatus)
- fuscum (Enicosanthum fuscum, Uvariodendron fuscum)
- gabbii (Micrarionta gabbii, Bassaricyon gabbii)
- gabela (Prionops gabela, Sheppardia gabela)
- gabonicus (Anthreptes gabonicus, Scotobleps gabonicus)
- gabriellae (Hylobates gabriellae, Nomascus gabriellae)
- gageana (Nauclea gageana, Eugenia gageana)
- galactotes (Erythropygia galactotes, Cisticola galactotes)
- galapagensis (Carcharhinus galapagensis, Alternanthera galapagensis)
- galeus (Serranus galeus, Galeorhinus galeus)
- gallardoi (Podiceps gallardoi, Bufo gallardoi)
- gallarum (Galago gallarum, Colobus guereza gallarum)
- gambensis (Plectropterus gambensis, Dryoscopus gambensis)
- gambieri (Todiramphus gambieri, Todirhamphus gambieri)
- garamantis (Parantica garamantis, Gerbillus garamantis)
- gardineri (Sooglossus gardineri, Pamelaescincus gardineri)
- gargarizans (Bufo gargarizans andrewsi, Bufo gargarizans)
- gargola (Alsodes gargola, Alsodes gargola neuquensis)
- garmani (Bufo garmani, Characodon garmani)
- garoensis (Rana garoensis, Ichthyophis garoensis)
- gatopensis (Leptostylis gatopensis, Eugenia gatopensis)
- gayi (Attagis gayi, Phrygilus gayi)
- geayi (Bedotia geayi, Ctenophryne geayi)
- geertsi (Copadichromis geertsi, Caecobarbus geertsi)
- geijskesi (Dasyatis geijskesi, Cochranella geijskesi)
- gemina (Celaenura gemina, Ischnura gemina)
- geminatus (Gomphus geminatus, Hylogomphus geminatus)
- gemma (Hemistoma gemma, Marginella gemma)
- gemonensis (Coluber gemonensis, Hierophis gemonensis)
- geometricus (Psammobates geometricus, Lamprophis geometricus)
- georgii (Rhacophorus georgii, Magnolia georgii)
- germaini (Trachypithecus villosus germaini, Polyplectron germaini)
- ghanensis (Hunteria ghanensis, Phrynobatrachus ghanensis)
- gibberulus (Tomigerus gibberulus, Tornigenus gibberulus digerus)
- gibbosa (Pyganodon gibbosa, Shorea gibbosa)
- gibbosus (Apristurus gibbosus, Breviceps gibbosus)
- gibbsii (Podocarpus gibbsii, Neurotrichus gibbsii)
- gibsonii (Cyanea macrostegia gibsonii, Cyanea gibsonii)
- giffardii (Cyrtandra giffardii, Cyanea giffardii)
- gillettii (Hildegardia gillettii, Sclerocarya gillettii)
- gilli (Xenopus gilli, Austroglanis gilli)
- gilliesi (Amanipodagrion gilliesi, Paryphanta gilliesi)
- gilvus (Mimus gilvus, Vireo gilvus)
- giorgii (Beilschmiedia giorgii, Phrynobatrachus giorgii)
- glabrum (Ceriagrion glabrum, Astronidium glabrum)
- gladiator (Eleutherodactylus gladiator, Malaconotus gladiator)
- gladius (Xiphias gladius, Psephurus gladius)
- glandarius (Garrulus glandarius, Clamator glandarius)
- glanis (Silurus glanis, Siluris glanis)
- glaucinus (Eumops glaucinus, Myophonus glaucinus)
- glaucocaerulea (Cyanoloxia glaucocaerulea, Passerina glaucocaerulea)
- glaucoreius (Eleutherodactylus cundalli glaucoreius, Eleutherodactylus glaucoreius)
- glaucum (Africallagma glaucum, Canthium glaucum glaucum)
- glauerti (Bothriembryon glauerti, Crinia glauerti)
- gleadowi (Gerbillus gleadowi, Millardia gleadowi)
- gleasonii (Brachyotum gleasonii, Schefflera gleasonii)
- globosus (Coelus globosus, Dipterocarpus globosus)
- globulosa (Crax globulosa, Gulella gouldi globulosa)
- glutinosus (Plethodon glutinosus, Ichthyophis glutinosus)
- gmelinii (Larix gmelinii, Ovis orientalis gmelinii)
- gnoma (Glaucidium gnoma, Chiasmocleis gnoma)
- gobio (Cottus gobio, Gobio gobio)
- godlewskii (Anthus godlewskii, Emberiza godlewskii)
- goeringi (Hemispingus goeringi, Brachygalba goeringi)
- goetzei (Pittosporum goetzei, Psychotria goetzei goetzei, Trichocladus goetzei)
- goianus (Colostethus goianus, Hypsiboas goianus)
- goniocalyx (Eugenia goniocalyx, Inga goniocalyx)
- goodenovii (Petroica goodenovii, Eugenia goodenovii)
- goral (Naemorhedus goral, Naemorhedus goral goral)
- gordiagini (Myrmecoxenus gordiagini, Myrmoxenus gordiagini)
- gordonii (Tessmannianthus gordonii, Gardenia gordonii)
- gordonorum (Procolobus badius gordonorum, Procolobus gordonorum)
- goslingi (Colomys goslingi, Apalis goslingi)
- gottlebei (Scaphiophryne gottlebei, Euphorbia gottlebei)
- goudoti (Lepidopyga goudoti, Myotis goudoti)
- goughensis (Rowettia goughensis, Agrostis goughensis)
- gounellei (Phaethornis gounellei, Anopetia gounellei)
- gowersi (Haplochromis gowersi, Prognathochromis gowersi)
- grahamensis (Sonorella grahamensis, Tamiasciurus hudsonicus grahamensis)
- graminea (Litoria graminea, Rana graminea)
- graminifolia (Werneria graminifolia, Bomarea graminifolia)
- grammiceps (Seicercus grammiceps, Stachyris grammiceps)
- grammicus (Pseudoscops grammicus, Celeus grammicus)
- grandiceps (Crocidura grandiceps, Eleutherodactylus grandiceps)
- grandifoliola (Khaya grandifoliola, Guioa grandifoliola)
- grandifolius (Oreopanax grandifolius, Lasianthus grandifolius)
- grandimanus (Pseudoniphargus grandimanus, Crangonyx grandimanus)
- granosa (Hyla granosa, Hyla granosa gracilis)
- granulosum (Pleurodema granulosum, Ambystoma granulosum)
- grassei (Plagiolepis grassei, Crocidura grassei)
- gratus (Peromyscus gratus, Encephalartos gratus)
- gravis (Puffinus gravis, Quemisia gravis)
- grayii (Strongylopus grayii, Ardeola grayii)
- greenhalli (Cynomops greenhalli, Molossops greenhalli)
- greenii (Ptychobranchus greenii, Fejervarya greenii)
- gregalis (Eremomela gregalis, Microtus gregalis)
- gregarius (Vanellus gregarius, Batrachoseps gregarius)
- greggii (Leucaena greggii, Pinus greggii)
- greyi (Eleutherodactylus greyi, Macropus greyi)
- greyii (Nycticeius greyii, Ptilinopus greyii)
- griseicauda (Treron griseicauda, Stenocephalemys griseicauda)
- griseigularis (Leptodactylus griseigularis, Myioparus griseigularis)
- griseipectus (Lathrotriccus griseipectus, Hemitriccus griseipectus)
- griseiventris (Parus griseiventris, Taphrolesbia griseiventris)
- griseolus (Phylloscopus griseolus, Oligoryzomys griseolus)
- grisescens (Ateles geoffroyi grisescens, Myotis grisescens)
- groenlandicus (Pagophilus groenlandicus, Dicrostonyx groenlandicus)
- grunniens (Bos grunniens, Limnonectes grunniens)
- grypus (Halichoerus grypus, Aaptosyax grypus)
- guanicoe (Lama guanicoe, Lama guanicoe guanicoe)
- guariba (Alouatta guariba, Alouatta guariba guariba)
- guarouba (Aratinga guarouba, Guaruba guarouba)
- guatemalae (Megascops guatemalae, Otus guatemalae)
- gubernaculum (Epioblasma torulosa gubernaculum, Dysnomia torulosa gubernaculum)
- gueldenstaedtii (Acipenser gueldenstaedtii, Crocidura gueldenstaedtii)
- guerinii (Oxypogon guerinii, Truncatella guerinii)
- guerreroi (Hyla lanciformis guerreroi, Rana guerreroi)
- guiarti (Haplochromis guiarti, Haplochromis guiarti complex)
- guillauminii (Dacrydium guillauminii, Hunga guillauminii)
- guira (Hemithraupis guira, Guira guira)
- gunnari (Aphelandra gunnari, Albericus gunnari)
- gunnii (Perameles gunnii gunnii, Perameles gunnii)
- gunungensis (Philautus gunungensis, Leptobrachium gunungensis)
- guppyi (Discodeles guppyi, Platymantis guppyi)
- gustavi (Anthus gustavi, Magnolia gustavi)
- gyarosensis (Coluber gyarosensis, Hierophis gyarosensis)
- gyldenstolpei (Limnonectes gyldenstolpei, Isopachys gyldenstolpei)
- gymnocarpa (Tetraplasandra gymnocarpa, Centaurea gymnocarpa)
- gymnops (Melipotes gymnops, Rhegmatorhina gymnops)
- gymnura (Saccopteryx gymnura, Echinosorex gymnura)
- gymnurus (Hoplomys gymnurus, Pappogeomys gymnurus)
- haasi (Cobitis haasi, Barbus haasi)
- habbema (Hydromys habbema, Antechinus habbema)
- haematogaster (Campephilus haematogaster, Northiella haematogaster)
- haematopus (Boophis haematopus, Himantornis haematopus)
- haenkeana (Mascagnia haenkeana, Schinopsis haenkeana)
- haggardi (Ourebia ourebi haggardi, Phyllotis haggardi)
- hahneli (Epipedobates hahneli, Parides hahneli)
- halei (Discherodontus halei, Sicyopterus halei)
- halenbergense (Conophytum halenbergense, Eriospermum halenbergense)
- hallucatus (Dasyurus hallucatus, Satanellus hallucatus)
- hamaderohensis (Euphorbia hamaderohensis, Cissus hamaderohensis)
- hamadryas (Papio hamadryas anubis, Papio hamadryas)
- hamata (Neostenanthera hamata, Nepenthes hamata)
- hamatiflora (Cyanea hamatiflora hamatiflora, Cyanea hamatiflora)
- hamatus (Taeromys hamatus, Rostrhamus hamatus)
- hamiltonii (Geoclemys hamiltonii, Pomaderris hamiltonii)
- hamlyni (Cercopithecus hamlyni, Myliobatis hamlyni)
- hamoni (Aciagrion hamoni, Pseudagrion hamoni)
- hanoverensis (Psychotria hanoverensis, Eugenia hanoverensis)
- haplochrous (Turdus haplochrous, Accipiter haplochrous)
- harenna (Ptychadena harenna, Crocidura harenna)
- harmsiana (Prumnopitys harmsiana, Eriosema harmsiana)
- harringtoni (Taterillus harringtoni, Desmomys harringtoni)
- harti (Rhagada harti, Cambarus harti)
- hartwegi (Plectrohyla hartwegi, Bolitoglossa hartwegi)
- hartwigi (Praomys hartwigi, Trithemis hartwigi)
- harveyi (Parosphromenus harveyi, Cephalophus harveyi)
- harwoodi (Gerbillus harwoodi, Francolinus harwoodi)
- hasitata (Pterodroma hasitata, Pterodroma hasitata caribbaea)
- hatinhensis (Trachypithecus francoisi hatinhensis, Lophura hatinhensis)
- hauxwelli (Turdus hauxwelli, Myrmotherula hauxwelli)
- hawaiensis (Pupoidopsis hawaiensis, Melicope hawaiensis)
- haydeeae (Colostethus haydeeae, Nephelobates haydeeae)
- hazelae (Plectrohyla hazelae, Platymantis hazelae)
- hecqui (Xenochromis hecqui, Neolamprologus hecqui)
- hedbergii (Licania hedbergii, Colpodium hedbergii)
- heermanni (Larus heermanni, Dipodomys heermanni)
- heilprini (Hypsiboas heilprini, Cyanocorax heilprini)
- heinei (Tangara heinei, Zoothera heinei)
- heitzii (Calpocalyx heitzii, Monopetalanthus heitzii)
- helanshanensis (Ochotona pallasi helanshanensis, Ochotona helanshanensis)
- helena (Chilonopsis helena, Perdicella helena)
- helianthea (Coeligena helianthea, Culicicapa helianthea)
- heliodor (Chaetocercus heliodor, Acestrura heliodor)
- hemileucurus (Phlogophilus hemileucurus, Campylopterus hemileucurus)
- hemileucus (Myrmochanes hemileucus, Lampornis hemileucus)
- heminota (Eleutherodactylus bakeri heminota, Eleutherodactylus heminota)
- hemiophrys (Bufo hemiophrys)
- hemsleyana (Begonia hemsleyana, Shorea hemsleyana hemsleyana)
- hendersoni (Somatogyrus hendersoni, Podoces hendersoni)
- henrici (Ficedula henrici, Garrulax henrici)
- henriquesii (Homalium henriquesii, Drypetes henriquesii)
- henryana (Shorea henryana, Pelagodoxa henryana)
- henseli (Drymaeus henseli, Bufo henseli)
- heptneri (Capra falconeri heptneri, Salpingotus heptneri)
- herminae (Mannophryne herminae, Opheodrys herminae)
- herminieri (Leiocephalus herminieri, Melanerpes herminieri)
- hernandezi (Eleutherodactylus hernandezi, Saguinus nigricollis hernandezi)
- herrei (Puntius herrei, Micrixalus herrei)
- hershkovitzi (Akodon hershkovitzi, Aotus hershkovitzi)
- herzogii (Luteolejeunea herzogii, Rollinia herzogii)
- heterophyllum (Calophyllum heterophyllum, Zanthoxylum heterophyllum)
- heuglini (Ploceus heuglini, Cossypha heuglini)
- hewitti (Arthroleptella hewitti, Heleophryne hewitti)
- heyneana (Nothopegia heyneana, Tabernaemontana heyneana)
- hierniana (Psychotria hierniana, Schefflera hierniana)
- hilli (Taphozous hilli, Rhinolophus hilli)
- hillieri (Divellomelon hillieri, Dasycercus hillieri)
- himalayanus (Bufo himalayanus, Amolops himalayanus)
- himantopus (Micropalama himantopus, Himantopus himantopus)
- hintonii (Ariocarpus bravoanus hintonii, Quercus hintonii)
- hintoniorum (Coryphantha hintoniorum, Quercus hintoniorum)
- hipposideros (Rhinolophus hipposideros, Betta hipposideros)
- hirsutissima (Litsea hirsutissima, Cytora hirsutissima, Aegiphila cuneata hirsutissima)
- hirtula (Helogale hirtula, Pseudolmedia hirtula)
- hirundinaceus (Caprimulgus hirundinaceus, Hemipus hirundinaceus)
- hirundo (Scotoecus hirundo, Sterna hirundo)
- histrio (Eos histrio, Hyophryne histrio)
- histrionicus (Histrionicus histrionicus, Dendrobates histrionicus)
- histrix (Hippocampus histrix)
- hitchcockii (Begonia hitchcockii, Hydrocotyle hitchcockii)
- hobbsi (Crangonyx hobbsi, Hypsiboas hobbsi)
- hoeschi (Anthus hoeschi, Bufo hoeschi)
- hoffmani (Doratogonus hoffmani, Plethodon hoffmani)
- holmgrenii (Dioon holmgrenii, Palicourea holmgrenii)
- hololius (Leptodactylus hololius, Bufo hololius)
- holsti (Parus holsti, Rana holsti)
- holstii (Ilex holstii, Pavetta holstii)
- holti (Orconectes holti, Eleutherodactylus holti)
- holttumii (Garcinia holttumii, Goniothalamus holttumii)
- hondurense (Molinadendron hondurense, Viburnum hondurense)
- hoodensis (Bulimulus hoodensis, Geochelone nigra hoodensis)
- hoogerwerfi (Rattus hoogerwerfi, Lophura hoogerwerfi)
- hooveri (Philodendron hooveri, Pepinia hooveri)
- horizontalis (Juniperus horizontalis, Austromyrtus horizontalis)
- hornii (Bathybates hornii, Nasa hornii)
- horrida (Cyanea horrida, Uebelmannia pectinifera horrida)
- horridum (Theloderma horridum, Heloderma horridum)
- horridus (Mantidactylus horridus, Encephalartos horridus)
- horvathi (Lacerta horvathi, Iberolacerta horvathi)
- hosonoi (Sorex hosonoi, Myotis hosonoi)
- hotsoni (Calomyscus hotsoni, Allactaga hotsoni)
- hottentottus (Turnix hottentottus, Dicrurus hottentottus)
- houstonensis (Bufo houstonensis, Quadrula houstonensis)
- hova (Oryzorictes hova, Mirafra hova)
- howardiana (Sebastiania howardiana, Ternstroemia howardiana)
- howelli (Sylvisorex howelli, Stephopaedes howelli)
- howensis (Nyctophilus howensis, Pteropus howensis)
- hubeiensis (Rhinopithecus roxellana hubeiensis, Rana hubeiensis)
- huberi (Oreophrynella huberi, Strongylognathus huberi)
- hudsonicus (Tamiasciurus hudsonicus, Parus hudsonicus)
- hudsonius (Zapus hudsonius, Dicrostonyx hudsonius)
- huerlimannii (Actinokentia huerlimannii, Nardia huerlimannii)
- huigrensis (Miconia huigrensis, Calea huigrensis)
- hulensis (Mirogrex hulensis, Acanthobrama hulensis)
- humbloti (Nectarinia humbloti, Ardea humbloti)
- humboldti (Spheniscus humboldti, Histiotus humboldti)
- humboldtii (Hylocharis humboldtii, Conepatus humboldtii)
- humicola (Callulops humicola, Asthenes humicola)
- hurtadoi (Gambusia hurtadoi, Pentacalia hurtadoi)
- hurterii (Scaphiopus hurterii, Scaphiopus holbookii hurterii)
- hutchinsi (Kimberleyeleotris hutchinsi, Hypsiboas hutchinsi)
- hutchinsoniana (Gardenia hutchinsoniana, Areca hutchinsoniana)
- hyacinthinus (Cyornis hyacinthinus, Anodorhynchus hyacinthinus)
- hyalina (Conozoa hyalina, Partula hyalina)
- hyemalis (Junco hyemalis, Clangula hyemalis)
- hyloides (Leptopelis hyloides)
- hylophila (Strix hylophila, Miconia hylophila)
- hypargyreus (Pappobolus hypargyreus, Artocarpus hypargyreus)
- hypochrysea (Cola hypochrysea, Lycianthes hypochrysea)
- hypogrammica (Pytilia hypogrammica, Stachyris hypogrammica)
- hypophyllus (Hipposideros hypophyllus, Phyllocladus hypophyllus)
- hypostictus (Serinus hypostictus, Taphrospilus hypostictus)
- hyssopifolia (Gentianella hyssopifolia, Calceolaria hyssopifolia)
- ibarrensis (Buddleja ibarrensis, Nassella ibarrensis)
- ibeanus (Tachyoryctes ibeanus, Grammomys ibeanus)
- iberica (Rana iberica, Ilex perado iberica)
- ibericus (Phylloscopus ibericus, Pelodytes ibericus)
- ibis (Mycteria ibis, Bubulcus ibis)
- ichikawai (Pseudobagrus ichikawai, Coreobagrus ichikawai)
- ichthyaetus (Ichthyophaga ichthyaetus, Larus ichthyaetus)
- icterocephalus (Agelaius icterocephalus, Chrysomus icterocephalus)
- icterorhynchus (Otus icterorhynchus, Francolinus icterorhynchus)
- icterotis (Ognorhynchus icterotis, Platycercus icterotis)
- igneus (Alsodes igneus, Pericrocotus igneus)
- ignicolor (Duellmanohyla ignicolor, Eleutherodactylus ignicolor)
- igniventris (Anisognathus igniventris, Sciurus igniventris)
- ignobilis (Thripadectes ignobilis, Turdus ignobilis)
- ignota (Cochranella ignota, Myrmotherula ignota)
- ilesi (Copadichromis ilesi, Bathyclarias ilesi)
- iliffei (Typhlatya iliffei, Cocoharpinia iliffei)
- illotus (Paludicola illotus, Eleutherodactylus illotus)
- illyricus (Leuciscus illyricus, Squalius illyricus)
- imbaburense (Gnaphalium imbaburense, Solanum imbaburense)
- imitans (Euphonia imitans, Miconia imitans)
- imitata (Phreatodrobia imitata, Trithemis imitata)
- impennis (Pinguinus impennis, Alca impennis)
- implicata (Harmogenanina implicata, Pachycephala implicata)
- impressinervium (Palaquium impressinervium, Canthium impressinervium)
- incisa (Paramiella incisa, Scalesia incisa)
- incomptus (Eleutherodactylus incomptus, Orconectes incomptus)
- incrassatum (Brachyotum incrassatum, Erythroxylum incrassatum)
- incredibilis (Myristica incredibilis, Fordia incredibilis)
- incurvatus (Ophiogomphus incurvatus alleghaniensis, Ophiogomphus incurvatus)
- indicator (Baeopogon indicator, Indicator indicator)
- indigo (Peripatoides indigo, Eumyias indigo)
- indusiosa (Cheilanthopsis indusiosa, Woodsia indusiosa)
- induta (Rytigynia induta, Topobea induta)
- indutus (Lithocarpus indutus, Mus indutus)
- inepta (Cylindraspis inepta, Megacrex inepta)
- ineptus (Aethomys ineptus, Syrrhopus ineptus)
- inflata (Beddomeia inflata, Trochidrobia inflata)
- inflexus (Sarcaulus inflexus, Colostethus inflexus)
- infraguttatus (Colostethus infraguttatus, Eleutherodactylus infraguttatus)
- infraimmaculata (Salamandra infraimmaculata, Salamandra salamandra infraimmaculata)
- innominatus (Picumnus innominatus, Dipturus innominatus)
- inopinata (Westraltrachia inopinata, Thaumatoneura inopinata)
- inornatum (Chrysophyllum inornatum, Opisthostoma inornatum)
- insculpta (Clemmys insculpta, Carettochelys insculpta)
- insolita (Isthmohyla insolita, Newnhamia insolita)
- insperatus (Colostethus insperatus, Thorius insperatus)
- insulana (Volvarina insulana, Oreophryne insulana)
- insulata (Platymantis insulata, Sporophila insulata)
- integerrima (Bauhinia integerrima, Adinandra integerrima)
- integra (Dasylepis integra, Gymnanthes integra)
- interioris (Limnodynastes interioris, Lucania interioris)
- intricatus (Dipterocarpus intricatus, Carabus intricatus)
- inundata (Uperoleia inundata, Myristica inundata)
- inusitata (Lonchorhina inusitata, Oedipina inusitata)
- inustus (Saguinus inustus, Dendrolagus inustus)
- inversa (Agriocnemis inversa, Disciphania inversa)
- inyangae (Afrana inyangae, Bufo inyangae)
- io (Ia io, Balantiopteryx io)
- ionthus (Eleutherodactylus ionthus, Eleutherodactylus varians ionthus)
- irena (Geonoma irena, Miramella irena)
- irene (Microtus irene, Poecilmitis irene)
- iridescens (Amphorella iridescens, Paramelania iridescens)
- iriomotensis (Prionailurus bengalensis iriomotensis, Chlorogomphus iriomotensis)
- isabelae (Graellsia isabelae, Genetta genetta isabelae)
- isabella (Stiltia isabella, Funisciurus isabella)
- isabellinus (Macropus robustus isabellinus, Lanius isabellinus)
- ishidai (Macromidia ishidai, Macromia ishidai)
- ishigakiana (Planaeschna ishigakiana ishigakiana, Bayadera brevicauda ishigakiana)
- ishmaeli (Haplochromis ishmaeli, Labrochromis ishmaeli)
- isodon (Centrophorus isodon, Sorex isodon)
- isolata (Pyrgulopsis isolata, Jardinella isolata)
- isolatum (Tasmanoplectron isolatum, Cristilabrum isolatum)
- itajara (Serranus itajara, Epinephelus itajara)
- ituriensis (Encephalartos ituriensis, Batis ituriensis)
- jacobi (Bulimulus jacobi, Hopea jacobi)
- jacquinoti (Pachycephala jacquinoti, Ninox jacquinoti)
- jaegeri (Boophis jaegeri, Anetia jaegeri)
- jaliscana (Pinus jaliscana, Juniperus jaliscana, Abies guatemalensis jaliscana)
- jamaicana (Ilex jamaicana, Bactris jamaicana)
- jamesoni (Gallinago jamesoni, Platysteira jamesoni)
- japonensis (Panthera pardus japonensis, Grus japonensis)
- japonicum (Cinnamomum japonicum, Cercidiphyllum japonicum)
- javanicum (Lophopetalum javanicum, Alangium javanicum)
- javanus (Glischropus javanus, Rhacophorus javanus)
- jayakari (Hemitragus jayakari, Hippocampus jayakari)
- jeanneli (Thermochoria jeanneli, Elaphoidella jeanneli)
- jefeana (Ardisia jefeana, Maytenus jefeana)
- jenkinsi (Crocidura jenkinsi, Percina jenkinsi)
- jentinki (Sundasciurus jentinki, Cephalophus jentinki)
- jerboa (Bufo jerboa, Meristogenys jerboa)
- jerdonii (Philautus jerdonii, Ixalus jerdonii)
- jimiensis (Rana jimiensis, Danaus affinis jimiensis)
- jiulongensis (Scutiger jiulongensis, Paa jiulongensis)
- jocosus (Campylorhynchus jocosus, Pycnonotus jocosus)
- joffrei (Hypsugo joffrei, Pipistrellus joffrei)
- johnii (Semnopithecus johnii, Trachypithecus johnii)
- johnsi (Rana johnsi, Rana sauteri johnsi)
- johnstoniae (Trichoglossus johnstoniae, Tarsiger johnstoniae)
- jolyi (Scinax jolyi, Leptodactylus jolyi)
- jonesii (Sarracenia rubra jonesii, Radula jonesii)
- jonklaasi (Lepidocephalichthys jonklaasi, Sicyopus jonklaasi)
- jordanensis (Physalaemus jordanensis, Cycloramphus jordanensis)
- josephi (Tyrrheniella josephi, Abarema josephi)
- josephinae (Cysticus josephinae, Hemitriccus josephinae)
- jucundum (Rhododendron jucundum, Opisthostoma jucundum)
- juliani (Rana juliani, Gerbillus juliani)
- juttae (Cyphostemma juttae, Hoodia juttae)
- kaapori (Cebus olivaceus kaapori, Cebus kaapori)
- kaempferi (Hemitriccus kaempferi, Larix kaempferi)
- kafuensis (Kobus leche kafuensis, Cryptomys kafuensis)
- kahuziensis (Dendromus kahuziensis, Cercopithecus hamlyni kahuziensis)
- kalbreyeri (Wettinia kalbreyeri, Cryosophila kalbreyeri)
- kamerunensis (Disperis kamerunensis, Neoschumannia kamerunensis)
- kamoharai (Pseudocarcharias kamoharai, Centroscyllium kamoharai)
- kampeni (Oreophryne kampeni, Rana kampeni)
- kappleri (Dasypus kappleri, Peropteryx kappleri)
- karelini (Triturus cristatus karelini, Ovis ammon karelini)
- karlschmidti (Eleutherodactylus karlschmidti, Batrachuperus karlschmidti)
- kathleenae (Millardia kathleenae, Bonnetia kathleenae)
- keadicus (Leuciscus keadicus, Squalius keadicus)
- keaysi (Myotis keaysi, Oryzomys keaysi)
- keiensis (Micropsitta keiensis, Oligolepis keiensis)
- keithii (Dryobalanops keithii, Gonystylus keithii)
- kelsoensis (Ammopelmatus kelsoensis, Macrobaenetes kelsoensis)
- kempii (Lepidochelys kempii, Xenophrys kempii)
- kennedyi (Scinax kennedyi, Brachystegia kennedyi)
- kennicottii (Megascops kennicottii, Otus kennicottii)
- kentii (Guzmania kentii, Aechmea kentii)
- kenyacola (Chalinolobus kenyacola, Glauconycteris kenyacola)
- kerrii (Dipterocarpus kerrii, Platanus kerrii)
- kervillei (Pseudophoxinus kervillei, Strongylognathus kervillei)
- kiang (Equus kiang kiang, Equus kiang)
- kieferi (Stygodiaptomus kieferi, Elaphoidella kieferi)
- kienerii (Hieraaetus kienerii, Xiphorhynchus kienerii)
- kilimensis (Nectarinia kilimensis, Tropodiaptomus kilimensis)
- kimbozensis (Turraea kimbozensis, Necepsia castaneifolia kimbozensis)
- kinghorni (Litoria kinghorni, Hyla kinghorni)
- kingi (Aglaiocercus kingi, Cylindrovertilla kingi)
- kingianus (Lithocarpus kingianus, Pholidocarpus kingianus)
- kinzelbachi (Gomphus kinzelbachi, Chondrostoma kinzelbachi)
- kirbyi (Parantica kirbyi, Trithemis kirbyi)
- kirkbridei (Meriania kirkbridei, Huilaea kirkbridei)
- kirki (Nothobranchius kirki, Chytra kirki)
- kitaibellii (Ablepharus kitaibellii rueppellii, Ablepharus kitaibellii budaki)
- kitcheneri (Pipistrellus kitcheneri, Hypsugo kitcheneri)
- klagesi (Myrmotherula klagesi, Parides klagesi)
- klaineana (Aucoumea klaineana, Anopyxis klaineana)
- kleinii (Myrceugenia kleinii, Buchenavia kleinii)
- klossi (Spilornis klossi, Euroscaptor klossi)
- klugii (Oreopanax klugii, Coussarea klugii)
- knudseni (Carelia knudseni, Leptodactylus knudseni)
- kob (Kobus kob kob, Kobus kob)
- kobayashii (Eptesicus kobayashii, Megophrys kobayashii)
- koellikeri (Hyalosaurus koellikeri, Ophisaurus koellikeri)
- kohchangae (Rana kohchangae, Limnonectes kohchangae)
- komarovii (Juniperus komarovii, Malus komarovii)
- kondoi (Euphorbia kondoi, Paramiella kondoi)
- kondorum (Kondoa kondorum, Hongolua kondorum)
- koopmani (Rattus koopmani, Coendou koopmani)
- koordersii (Cassine koordersii, Shorea assamica koordersii)
- koreana (Abies koreana, Karsenia koreana)
- kostermansii (Myristica fissiflora kostermansii, Lithocarpus kostermansii, Dacryodes macrocarpa kostermansii)
- kozlovi (Sorex kozlovi, Salpingotus kozlovi)
- krameri (Umbra krameri, Psittacula krameri)
- krefftii (Phrynobatrachus krefftii, Lasiorhinus krefftii)
- kriegi (Borborocoetes kriegi, Pleurodema kriegi)
- kronei (Phylloscartes kronei, Pimelodella kronei)
- krukovii (Ficus krukovii, Pouteria krukovii)
- kuehni (Zosterops kuehni, Myzomela kuehni)
- kukunoris (Rana amurensis kukunoris, Rana kukunoris)
- kummeriae (Enantia kummeriae, Annickia kummeriae)
- kundagungan (Kyarranus kundagungan, Philoria kundagungan)
- kupense (Peucedanum kupense, Bulbophyllum kupense)
- kuriense (Nanorrhinum kuriense, Heliotropium kuriense)
- kuroiwae (Goniosaurus kuroiwae, Goniurosaurus kuroiwae)
- kurzii (Hydnocarpus kurzii, Bridelia kurzii)
- kweichowensis (Tylototriton kweichowensis, Uvaria kweichowensis)
- labatii (Asteropeia labatii, Euphorbia labatii)
- labiosa (Barbus labiosa, Paratherina labiosa)
- labridens (Protomelas labridens, Cichlasoma labridens)
- labrosus (Leptodactylus labrosus, Melanochromis labrosus)
- lacera (Lagochila lacera, Paradrymonia lacera)
- lacertosa (Woodfordia lacertosa, Plectrohyla lacertosa)
- laciniata (Drypetes laciniata, Cheilanthes laciniata)
- laciniosa (Drymonia laciniosa, Actinella laciniosa)
- lacrimosus (Eleutherodactylus lacrimosus, Colostethus lacrimosus)
- lacus-coerulei (Tasmanophlebi lacus-coerulei, Tasmanophlebia lacus-coerulei)
- ladogensis (Pusa hispida ladogensis, Phoca hispida ladogensis)
- laegaardii (Neurolepis laegaardii, Rubus laegaardii)
- laetissima (Pseudocampylaea laetissima, Chlorocichla laetissima)
- laevicaulis (Pilea laevicaulis, Eugenia laevicaulis)
- laevifolius (Stemonoporus laevifolius, Encephalartos laevifolius)
- lafresnayi (Lafresnaya lafresnayi, Picumnus lafresnayi)
- lamellata (Shorea lamellata, Diplommatina lamellata)
- lamia (Chiruromys lamia, Oryzomys lamia)
- lampra (Sanchezia lampra, Myrmica lampra)
- lampropeltis (Erpetogomphus lampropeltis lampropeltis, Erpetogomphus lampropeltis)
- lamprophylla (Eugenia lamprophylla, Mollinedia lamprophylla)
- lanceolatum (Cotylelobium lanceolatum, Osmoxylon lanceolatum)
- lane-poolei (Pausinystalia lane-poolei lane-poolei, Cycas lane-poolei)
- langbianis (Crocias langbianis, Niviventer langbianis)
- langsdorffi (Popelairia langsdorffi, Discosura langsdorffi)
- langsdorffii (Ocotea langsdorffii, Itapotihyla langsdorffii)
- lanioides (Lipaugus lanioides, Pachycephala lanioides)
- lanosa (Kerivoula lanosa, Crocidura lanosa)
- lanuginosus (Cleistanthus lanuginosus, Andropogon lanuginosus)
- laosensis (Ichthyophis laosensis, Dasyatis laosensis)
- lar (Hylobates lar lar, Hylobates lar)
- laricina (Lysipomia laricina, Larix laricina)
- lasiocarpa (Myristica lasiocarpa, Abies lasiocarpa)
- lasiotis (Dicerorhinus sumatrensis lasiotis, Thalpomys lasiotis)
- lasiurus (Bolomys lasiurus, Platacanthomys lasiurus)
- latastii (Bufo latastii, Ophiomorus latastii)
- latebricola (Scytalopus latebricola, Akodon latebricola)
- latens (Eleutherodactylus latens, Spirorbula latens)
- lateristriga (Mylochromis lateristriga, Hyla lateristriga)
- laticaudatus (Rhinosciurus laticaudatus, Nyctinomops laticaudatus)
- laticaudus (Squaliolus laticaudus, Scoliodon laticaudus)
- latidens (Anoura latidens, Abditomys latidens)
- latidiscus (Eleutherodactylus latidiscus, Eleutherodactylus latidiscus tamsitti)
- latifolium (Nothocestrum latifolium, Xylosma latifolium)
- latilabris (Omphalotropis latilabris, Oreochromis latilabris)
- latimanus (Scapanus latimanus, Rhipidomys latimanus)
- latinasus (Leptodactylus latinasus, Colostethus latinasus)
- latipetala (Saurauia latipetala, Xylopia latipetala)
- latopalmata (Rana latopalmata, Litoria latopalmata)
- latro (Ctenomys latro, Birgus latro)
- laubenfelsii (Araucaria laubenfelsii, Podocarpus laubenfelsii)
- laucaensis (Trichomycterus laucaensis, Orestias laucaensis)
- launcestonensis (Anoglypta launcestonensis, Beddomeia launcestonensis)
- laurina (Ningbingia laurina, Weinmannia laurina laurina, Euclea laurina, Knema laurina laurina)
- lawrencei (Podocarpus lawrencei, Carduelis lawrencei)
- laxinervis (Lasianthus kilimandscharicus laxinervis, Prunus laxinervis)
- laxum (Saccoloma laxum, Odontonema laxum)
- lazuli (Todirhamphus lazuli, Todiramphus lazuli)
- lebrunii (Baphia incerta lebrunii, Anthonotha lebrunii)
- leche (Kobus leche leche, Kobus leche)
- lecointei (Trichilia lecointei, Zamia lecointei)
- lecontei (Toxostoma lecontei, Ceyx lecontei)
- ledifolia (Miconia ledifolia, Aetheolaena ledifolia)
- legatus (Diplothrix legatus, Oryzomys legatus)
- lehmbachii (Tiliacora lehmbachii, Vitex lehmbachii)
- leiocarpa (Securidaca leiocarpa, Esenbeckia leiocarpa)
- leithii (Indirana leithii, Aspideretes leithii)
- lemmingii (Rutilus lemmingii, Chondrostoma lemmingii)
- lemminus (Alticola lemminus, Punomys lemminus)
- lemniscatus (Funisciurus lemniscatus, Liolaemus lemniscatus)
- lemurinus (Aotus lemurinus, Aotus lemurinus lemurinus)
- lenior (Epioblasma lenior, Dysnomia lenior)
- lenticula (Agathis lenticula, Percina lenticula)
- lentiscifolia (Archidendropsis lentiscifolia, Inga lentiscifolia)
- lentus (Eleutherodactylus lentus, Eleutherodactylus lentus richmondi)
- leopardus (Plectropomus leopardus, Rajella leopardus)
- leopoldi (Potamotrygon leopoldi, Catostomus leopoldi)
- lepidotum (Aequatorium lepidotum, Astronidium lepidotum)
- leporinus (Noctilio leporinus, Limnonectes leporinus)
- leprosa (Canariella leprosa, Pseudoeurycea leprosa)
- leptodon (Leptodea leptodon, Lethrinops leptodon)
- leptopus (Batrachyla leptopus, Ansonia leptopus)
- leptoscelis (Bufo leptoscelis, Hyla leptoscelis)
- leptosoma (Rhamphochromis leptosoma, Cyprichromis leptosoma)
- leptosomus (Hyperolius leptosomus, Brachypteracias leptosomus)
- leptura (Xenotilapia leptura, Saccopteryx leptura)
- leroyi (Malleastrum leroyi, Notogomphus leroyi)
- lervia (Ammotragus lervia ornatus, Ammotragus lervia)
- lesueur (Bettongia lesueur lesueur, Bettongia lesueur)
- letitiae (Popelairia letitiae, Discosura letitiae)
- leucas (Delphinapterus leucas, Carcharhinus leucas)
- leucichthys (Stenodus leucichthys leucichthys, Stenodus leucichthys)
- leuciscus (Leuciscus leuciscus, Nyassachromis leuciscus)
- leucoclada (Kokoona leucoclada, Aglaia leucoclada)
- leucolaemus (Piculus leucolaemus, Odontophorus leucolaemus)
- leucomela (Columba leucomela, Lalage leucomela)
- leuconota (Columba leuconota, Pyriglena leuconota)
- leucophaea (Collocalia leucophaea, Cormobates leucophaea)
- leucophoeus (Speirops leucophoeus)
- leucophthalma (Aratinga leucophthalma, Myrmotherula leucophthalma)
- leucophthalmus (Larus leucophthalmus, Automolus leucophthalmus)
- leucophylla (Sarracenia leucophylla, Aglaia leucophylla)
- leucopygia (Turdoides leucopygia, Coracina leucopygia)
- leucopygialis (Rhaphidura leucopygialis, Lalage leucopygialis)
- leucoraphe (Bridouxia leucoraphe, Bridouxiana leucoraphe)
- leucorhinus (Philautus leucorhinus, Calcochloris leucorhinus)
- leucorrhoa (Corapipo leucorrhoa, Tachycineta leucorrhoa)
- leucoryphus (Haliaeetus leucoryphus, Platyrinchus leucoryphus)
- leucospodia (Pseudelaenia leucospodia, Myiopagis leucospodia)
- leucotaenia (Hyla leucotaenia, Papilio leucotaenia)
- leucothorax (Rhipidura leucothorax, Lanio leucothorax)
- levantina (Rana levantina, Cobitis levantina)
- lherminieri (Cichlherminia lherminieri, Puffinus lherminieri)
- liberatus (Doratogonus liberatus, Laniarius liberatus)
- lichenigera (Oligosoma lichenigera, Cyclodina lichenigera)
- lichenoides (Eleutherodactylus lichenoides, Boophis lichenoides)
- lichtensteini (Philydor lichtensteini, Eremodipus lichtensteini)
- lichuanensis (Bombina lichuanensis, Oreolalax lichuanensis)
- liemi (Taudactylus liemi, Caprichromis liemi)
- lignaria (Paryphanta lignaria, Chimaera lignaria)
- lignicolor (Bolitoglossa lignicolor, Paradoxurus hermaphroditus lignicolor)
- likiangensis (Picea likiangensis, Platanthera likiangensis)
- lilacina (Asplundia lilacina, Manettia lilacina)
- lilianae (Sturnella lilianae, Agapornis lilianae)
- limae (Grewia limae, Picumnus limae)
- limnocharis (Rana limnocharis syhadrensis, Fejervarya limnocharis)
- limosus (Thomomys talpoides limosus, Atelopus limosus)
- lindsayi (Actenoides lindsayi, Scinax lindsayi)
- lineatum (Tigrisoma lineatum, Nodonema lineatum)
- lineola (Bolborhynchus lineola, Sporophila lineola)
- lineolata (Ellipsaria lineolata, Moitessieria lineolata)
- lineolatus (Hacrochlamys lineolatus, Oxychilus lineolatus)
- listeri (Arenga listeri, Lepidodactylus listeri)
- litana (Heliconia litana, Peperomia litana)
- littlejohni (Uperoleia littlejohni, Litoria littlejohni)
- lobatus (Urolophus lobatus, Phalaropus lobatus)
- lobbii (Salvia lobbii, Palicourea lobbii)
- loddigesii (Zamia loddigesii, Latania loddigesii)
- loeseneriana (Macleania loeseneriana, Bauhinia loeseneriana)
- longibarbis (Bathyclarias longibarbis, Gnathonemus longibarbis)
- longicephalus (Apristurus longicephalus, Ichthyophis longicephalus)
- longiceps (Barbus longiceps, Rhamphochromis longiceps)
- longicuspidata (Licania longicuspidata, Mollinedia longicuspidata)
- longiflorum (Alangium longiflorum, Scaphium longiflorum)
- longifolium (Nothocestrum longifolium, Homalium longifolium)
- longimembris (Perognathus longimembris, Tyto longimembris)
- longinasus (Bufo longinasus, Polypedates longinasus)
- longior (Pseudotropheus longior, Neolamprologus longior)
- longipedicellatum (Ophrypetalum odoratum longipedicellatum, Stephanopodium longipedicellatum)
- longipedunculata (Clidemia longipedunculata, Abarema longipedunculata)
- longirachis (Eschweilera longirachis, Grias longirachis)
- longirostra (Arachnothera longirostra, Rukia longirostra)
- longistyla (Madhuca longistyla, Congothemis longistyla)
- longitubus (Oxyanthus pyriformis longitubus, Plagiosiphon longitubus)
- lonnbergi (Bufo lonnbergi, Catharacta lonnbergi)
- lophocarpa (Oncoba lophocarpa, Caloncoba lophocarpa)
- lorata (Sterna lorata, Achatinella lorata)
- lorentzi (Neophascogale lorentzi, Pachycephala lorentzi)
- loricatus (Celeus loricatus, Monarcha loricatus)
- lornae (Barbus lornae, Gulella lornae lornae)
- louvelii (Ravenea louvelii, Dalbergia louvelii)
- loveridgii (Opsaridium loveridgii, Barbus loveridgii)
- lowei (Gerbillus lowei, Sheppardia lowei)
- loxense (Solanum loxense, Geranium loxense)
- lozanoi (Bolitoglossa lozanoi, Atelopus lozanoi)
- luciana (Urothemis luciana, Neotoma fuscipes luciana)
- lucius (Ptychocheilus lucius, Rhamphochromis lucius)
- luctuosus (Tachyphonus luctuosus, Sakesphorus luctuosus)
- ludlowi (Bhutanitis ludlowi, Alcippe ludlowi)
- luederitzii (Oxalis luederitzii, Crassula luederitzii)
- lugoi (Mexipyrgus churinceanus lugoi, Aechmea lugoi)
- lukei (Cola lukei, Cynometra lukei)
- lukolelae (Praomys lukolelae, Malacomys lukolelae)
- lumholtzi (Dendrolagus lumholtzi, Eodiaptomus lumholtzi)
- luminosa (Euterpe luminosa, Cochranella luminosa)
- lumutensis (Beilschmiedia lumutensis, Shorea lumutensis)
- lunata (Sterna lunata, Onychogalea lunata)
- lundbergi (Eleutherodactylus lundbergi, Prietella lundbergi)
- lupus (Canis lupus, Ictalurus lupus)
- luquillensis (Calyptranthes luquillensis, Ternstroemia luquillensis)
- luscinia (Luscinia luscinia, Acrocephalus luscinia)
- luteoviridis (Pselliophorus luteoviridis, Basileuterus luteoviridis)
- luteynii (Stenostephanus luteynii, Ayapanopsis luteynii)
- lutheri (Vriesea lutheri, Heliconia lutheri)
- lutosus (Syrrhophus lutosus, Polyborus lutosus)
- lutzae (Liolaemus lutzae, Megaelosia lutzae)
- lutzorum (Crossodactylus lutzorum, Cycloramphus lutzorum)
- luzonicum (Canarium luzonicum, Sapium luzonicum)
- lyalli (Xenicus lyalli, Traversia lyalli)
- lydgatei (Hesperomannia lydgatei, Labordia lydgatei)
- lylei (Pteropus lylei, Hipposideros lylei)
- lymani (Eleutherodactylus lymani, Carelia lymani)
- lynnae (Gomphurus lynnae, Gomphus lynnae)
- lyra (Megaderma lyra, Uropsalis lyra)
- lyratus (Heliogomphus lyratus, Spermophilus parryii lyratus)
- lythrodes (Eleutherodactylus lythrodes, Duellmanohyla lythrodes)
- macaco (Eulemur macaco macaco, Eulemur macaco)
- macdougalli (Eleutherodactylus macdougalli, Thorius macdougalli)
- macedonica (Alosa macedonica, Graecoanatolica macedonica)
- macedonicum (Rutilus macedonicum, Pachychilon macedonicum)
- macei (Dendrocopos macei, Coracina macei)
- macgillivrayi (Pterodroma macgillivrayi, Pseudobulweria macgillivrayi)
- macgregori (Kibatalia macgregori, Cyclodina macgregori)
- mackeeana (Eugenia mackeeana, Hunga mackeeana)
- macki (Furgaleus macki, Litoria macki)
- mackloti (Acerodon mackloti, Apalharpactes mackloti)
- maclareni (Clarias maclareni, Pungu maclareni)
- macleayii (Pteronotus macleayii, Todiramphus macleayii)
- maclurei (Chusquea maclurei, Ilex maclurei)
- maconochiei (Cycas maconochiei, Cycas maconochiei maconochiei)
- macracanthus (Lethrinops macracanthus, Proscymnodon macracanthus)
- macrocephalum (Argyroxiphium sandwicense macrocephalum, Diplostephium macrocephalum)
- macrocercus (Tateomys macrocercus, Dicrurus macrocercus)
- macrochir (Lethrinops macrochir, Aulonocara macrochir)
- macrocnemis (Rana macrocnemis camerani, Rana macrocnemis)
- macrogaster (Diceratobasis macrogaster, Yunnanilus macrogaster)
- macroglossa (Limnomedusa macroglossa, Rana macroglossa)
- macroptera (Shorea macroptera macroptera, Pterodroma macroptera)
- macrosceles (Platymantis macrosceles, Circus macrosceles)
- macrosiphon (Rothmannia macrosiphon, Gigasiphon macrosiphon)
- macrostomus (Apristurus macrostomus, Batrachophrynus macrostomus)
- macrotympanum (Ptychohyla macrotympanum, Hildebrandtia macrotympanum)
- macrura (Thylamys macrura, Thermosphaeroma macrura)
- maculicollis (Lutra maculicollis, Rhynchotus maculicollis)
- maculipennis (Phylloscopus maculipennis, Larus maculipennis)
- mada (Prioniturus mada, Gymnophaps mada)
- madrensis (Peromyscus madrensis, Spermophilus madrensis)
- maesi (Cercopithecus mitis maesi, Garrulax maesi)
- magazinensis (Inflectarius magazinensis, Mesodon magazinensis)
- magdalenae (Proechimys magdalenae, Barbus magdalenae)
- magicus (Otus magicus insularis, Otus magicus)
- magnifolia (Unonopsis magnifolia, Tapura magnifolia)
- magnifolium (Stephanopodium magnifolium, Anthurium magnifolium)
- magnipes (Chiropterotriton magnipes, Thorius magnipes)
- magnum (Malacopteron magnum, Dacrydium magnum)
- mahrattensis (Dendrocopos mahrattensis, Caprimulgus mahrattensis)
- maini (Cyclorana maini, Zyzomys maini)
- mairei (Habenaria mairei, Cinnamomum mairei)
- maitlandii (Mikaniopsis maitlandii, Habenaria maitlandii)
- malacophylla (Dalbergia malacophylla, Albizia malacophylla malacophylla, Bursera malacophylla)
- malaitae (Rhipidura malaitae, Myzomela malaitae)
- malibato (Hopea malibato, Shorea malibato)
- malimbicus (Merops malimbicus, Malimbus malimbicus)
- manatus (Trichechus manatus manatus, Trichechus manatus)
- mandarinus (Lasiopodomys mandarinus, Cervus nippon mandarinus)
- mangorensis (Dypsis mangorensis, Euphorbia mangorensis)
- mangshanensis (Trimeresurus mangshanensis, Xenophrys mangshanensis)
- manii (Mesua manii, Syzygium manii)
- manilata (Ara manilata, Orthopsittaca manilata)
- manoeli (Neritilia manoeli, Neritina manoeli)
- mantchuricus (Cervus nippon mantchuricus, Hynobius mantchuricus)
- mantelli (Porphyrio mantelli, Apteryx mantelli)
- maosonensis (Rana maosonensis, Philautus maosonensis)
- maranonica (Synallaxis maranonica, Melanopareia maranonica)
- margaritacea (Palaua margaritacea, Alaena margaritacea)
- marginatum (Trematocara marginatum, Cleidion marginatum)
- mariannarum (Taheitia mariannarum, Ladronellum mariannarum)
- mariannus (Pteropus mariannus, Cervus mariannus)
- marica (Gazella subgutturosa marica, Gracilinanus marica)
- mariei (Cyclosurus mariei, Megalurulus mariei)
- markhami (Akodon markhami, Oceanodroma markhami)
- marlieri (Julidochromis marlieri, Spathodus marlieri)
- martensi (Castalia martensi, Trichotoxon martensi)
- martensii (Occidozyga martensii, Padogobius martensii)
- martiensseni (Otomops martiensseni, Arthroleptides martiensseni)
- martinensis (Ardisia martinensis, Neotoma martinensis)
- martinezricai (Lacerta martinezricai, Iberolacerta martinezricai)
- martinsi (Bokermannohyla martinsi, Saguinus martinsi)
- mascaensis (Insulivitrina mascaensis, Hemicycla mascaensis)
- masoalensis (Leptolaena masoalensis, Nepenthes masoalensis)
- mathewsi (Penescosta mathewsi, Cincloramphus mathewsi)
- matschiei (Galago matschiei, Dendrolagus matschiei)
- mauritanica (Tarentola mauritanica, Daboia mauritanica)
- maxi (Crocidura maxi, Sundamys maxi)
- maximowiczii (Picea maximowiczii maximowiczii, Microtus maximowiczii, Picea maximowiczii)
- maxonii (Ardisia maxonii, Cecropia maxonii)
- maxwelliana (Shorea maxwelliana, Abdulmajidia maxwelliana)
- maylandi (Melanotaenia maylandi, Aulonocara maylandi)
- mbenjii (Labidochromis mbenjii, Maylandia mbenjii)
- mcgregori (Coracina mcgregori, Ansonia mcgregori)
- meandri (Phoxinellus zeregii meandri, Phoxinellus zeregi meandri)
- mechowi (Cercococcyx mechowi, Cryptomys mechowi)
- mediocris (Miconia mediocris, Nectarinia mediocris)
- medium (Dacrydium medium, Athyrium medium)
- medusa (Centropogon medusa, Miconia medusa)
- megacephalum (Platysternon megacephalum, Ramphotrigon megacephalum)
- megaceros (Kobus megaceros, Capra falconeri megaceros)
- megalocephala (Chinemys megalocephala, Natrix megalocephala)
- megaphyllus (Rhinolophus megaphyllus, Acropogon megaphyllus)
- megapodius (Pteroptochos megapodius, Scinax megapodius)
- megaspila (Viverra megaspila, Cobitis megaspila)
- megatympanum (Thoropa megatympanum, Rana megatympanum)
- megistophylla (Shorea megistophylla, Erythrina megistophylla)
- melaena (Myrmecocichla melaena, Lonchura melaena)
- melalophos (Presbytis melalophos, Presbytis melalophos melalophos)
- melampus (Aepyceros melampus, Martes melampus)
- melania (Oceanodroma melania, Phyllomacromia melania)
- melanicterus (Cacicus melanicterus, Pycnonotus melanicterus)
- melanocarpa (Euphorbia melanocarpa, Chamaesyce melanocarpa)
- melanochir (Callicebus melanochir, Callicebus personatus melanochir)
- melanochlamys (Bangsia melanochlamys, Accipiter melanochlamys)
- melanoides (Benthochromis melanoides, Chilonopsis melanoides)
- melanolaemus (Atlapetes melanolaemus, Colostethus melanolaemus)
- melanolophus (Gorsachius melanolophus, Parus melanolophus)
- melanonota (Touit melanonota, Pipraeidea melanonota)
- melanopis (Theristicus melanopis, Schistochlamys melanopis)
- melanopoda (Pouteria melanopoda, Guioa melanopoda)
- melanopsis (Atlapetes melanopsis, Monarcha melanopsis)
- melanopus (Ceradenia melanopus, Trichomanes melanopus)
- melanospilus (Nothobranchius melanospilus, Ptilinopus melanospilus)
- melanostigma (Callochromis melanostigma, Holohalaelurus melanostigma)
- melanostomus (Neogobius melanostomus, Notropis melanostomus)
- melanota (Palaemnema melanota, Pulsatrix melanota)
- melanotos (Sarkidiornis melanotos, Calidris melanotos)
- melba (Tachymarptis melba, Pytilia melba)
- melckorum (Neoromicia melckorum, Eptesicus melckorum)
- melini (Eleutherodactylus melini, Leptodactylus melini)
- melleri (Anas melleri, Rhynchogale melleri)
- membranaceus (Malacorhynchus membranaceus, Cleistanthus membranaceus)
- mena' (Ptychochromis 'Joba mena', Paretroplus 'Dridri mena')
- menachensis (Serinus menachensis, Turdus menachensis)
- merlini (Saurothera merlini, Pseudhymenochirus merlini)
- mermere (Ladigesocypris mermere, Knipowitschia mermere)
- merrilliana (Nepenthes merrilliana, Kibatalia merrilliana)
- mertensiana (Tsuga mertensiana, Werneria mertensiana)
- merula (Turdus merula, Dendrocincla merula)
- merulinus (Cacomantis merulinus, Garrulax merulinus)
- mesoleuca (Elaenia mesoleuca, Conothraupis mesoleuca)
- mesops (Labeo mesops, Labeo aff. mesops)
- metabates (Eleutherodactylus metabates, Melierax metabates)
- metallica (Aplonis metallica, Cola metallica)
- metastriata (Epioblasma metastriata, Dysnomia metastriata)
- metohiensis (Paraphoxinus metohiensis, Phoxinellus metohiensis)
- meyricki (Hedylepta meyricki, Omiodes meyricki)
- mezii (Symplocos mezii, Myrsine mezii)
- miaotaiense (Acer miyabei miaotaiense, Acer miaotaiense)
- michaudi (Lemniscia michaudi, Tropidophora michaudi)
- micholitzii (Phalaenopsis micholitzii, Cycas micholitzii)
- micranthum (Cinnamomum micranthum, Syzygium micranthum)
- microbelos (Hyla dorsalis microbelos, Litoria microbelos)
- microgyna (Tetramorium microgyna, Pheidole microgyna)
- micropetala (Genyorchis micropetala, Trichilia micropetala)
- microphthalmus (Sinocyclocheilus microphthalmus, Spalax microphthalmus)
- microptera (Mirafra microptera, Rollandia microptera)
- microscaphus (Bufo microscaphus, Hemisus microscaphus)
- microsoma (Halocyptena microsoma, Oceanodroma microsoma)
- microspilotus (Neurergus microspilotus, Rhithrotriton derjugini microspilotus)
- migueli (Cycloramphus migueli, Eupsophus migueli)
- milensis (Podarcis milensis gaigeae, Podarcis milensis)
- milii (Euphorbia milii, Euphorbia milii milii, Callorhinchus milii)
- milleti (Garrulax milleti, Rana milleti)
- mimulus (Pseudantechinus mimulus, Microsciurus mimulus)
- mindiae (Tarentola mindiae, Hemidactylus mindiae)
- minuchae (Rossomrymex minuchae, Rossomyrmex minuchae)
- minulla (Nectarinia minulla, Batis minulla)
- minusculus (Dendropsophus minusculus, Kalophrynus minusculus)
- minutiflorum (Dendrobium minutiflorum, Clerodendrum glabrum minutiflorum)
- minutilla (Calidris minutilla, Rhogeessa minutilla)
- minutissima (Helenoconcha minutissima, Hemistoma minutissima)
- mirandaribeiroi (Synapturanus mirandaribeiroi, Cycloramphus mirandaribeiroi)
- mirifica (Capparis mirifica, Lewinia mirifica)
- mirus (Mesoplodon mirus, Otus mirus)
- mississippiensis (Orconectes mississippiensis, Ictinia mississippiensis)
- mitchelli (Quincuncina mitchelli, Hyperolius mitchelli)
- mitratus (Garrulax mitratus, Rhinolophus mitratus)
- mitsukurii (Hydrolagus mitsukurii, Squalus mitsukurii)
- mittermeieri (Colostethus mittermeieri, Philautus mittermeieri)
- mitu (Crax mitu, Mitu mitu)
- mixta (Batis mixta, Knema mixta)
- miyatai (Eleutherodactylus miyatai, Dendropsophus miyatai)
- moellendorffi (Sundasciurus moellendorffi, Rana moellendorffi)
- mohavensis (Spermophilus mohavensis, Microtus californicus mohavensis)
- molitor (Hyla molitor, Batis molitor)
- molliuscula (Guioa molliuscula, Deinbollia molliuscula)
- molossus (Glyphoglossus molossus, Molossus molossus)
- molucca (Lonchura molucca, Threskiornis molucca)
- monax (Marmota monax, Crocidura monax)
- moncktoni (Crossomys moncktoni, Melomys moncktoni)
- mondolfii (Eleutherodactylus mondolfii, Hyalinobatrachium mondolfii)
- mongolica (Saiga tatarica mongolica, Melanocorypha mongolica)
- mongolicus (Rhodopechys mongolicus, Microtus mongolicus)
- monileger (Ficedula monileger, Garrulax monileger)
- montevidensis (Melanophryniscus stelzneri montevidensis, Melanophryniscus montevidensis)
- monticolum (Dicaeum monticolum, Xanthophyllum monticolum)
- monticularis (Bunolagus monticularis, Petromyscus monticularis)
- montium (Phrynopus montium, Paramythia montium)
- montivaga (Rana montivaga, Cryptotis montivaga)
- monzoni (Nototriton monzoni, Cryptotriton monzoni)
- moratii (Euphorbia moratii moratii, Euphorbia moratii, Elaeocarpus moratii)
- moreleti (Bolitoglossa moreleti, Clavator moreleti)
- moreletii (Agalychnis moreletii, Crocodylus moreletii)
- morenoi (Metriopelia morenoi, Glossophaga morenoi)
- morrisi (Procambarus morrisi, Myotis morrisi)
- morrisoni (Stygobromus morrisoni, Pyrgulopsis morrisoni)
- morrisonicola (Pinus morrisonicola, Picea morrisonicola)
- mortoniana (Solanum corymbiflora mortoniana, Inga mortoniana)
- mossambica (Croilia mossambica, Ptychadena mossambica)
- mossambicense (Bombax mossambicense, Rhodognaphalon mossambicense)
- mossambicus (Breviceps mossambicus, Leptopelis mossambicus)
- mucronata (Quadrasiella mucronata, Citronella mucronata)
- muelleriana (Monachella muelleriana, Ficus muelleriana)
- mufindiensis (Coffea mufindiensis mufindiensis, Heinsenia diervilleiodes mufindiensis)
- muliensis (Scutiger muliensis, Ochotona muliensis)
- mulleri (Homopholis mulleri, Bolitoglossa mulleri)
- mulsant (Acestrura mulsant, Chaetocercus mulsant)
- multidentatus (Chiropterotriton multidentatus, Plecodus multidentatus)
- multifasciatus (Neolamprologus multifasciatus, Hypsiboas multifasciatus)
- multipunctatus (Oreolalax multipunctatus, Synodontis multipunctatus)
- multistriata (Charmosyna multistriata, Fejervarya multistriata)
- muluensis (Nepenthes muluensis, Scaevola muluensis)
- munda (Serpophaga munda, Galaxiella munda)
- murivorus (Mascarenotus murivorus, Athene murivorus)
- musciculus (Hypsugo musciculus, Pipistrellus musciculus)
- muscosa (Knema muscosa, Rana muscosa)
- musicola (Omiodes musicola, Hedylepta musicola)
- musseri (Volemys musseri, Microhydromys musseri)
- mustelina (Hylocichla mustelina, Achatinella mustelina)
- mustelinus (Certhiaxis mustelinus, Lepilemur mustelinus)
- mustersi (Batrachuperus mustersi, Microtus mustersi)
- mutandensis (Bulinus mutandensis, Potamonautes mutandensis)
- mutata (Batillaria mutata, Terpsiphone mutata)
- mweruensis (Oreochromis mweruensis, Bellamya mweruensis)
- mylergates (Haplochromis mylergates, Labrochromis mylergates)
- mylodon (Haplochromis mylodon, Labidochromis mylodon)
- myoxinus (Eliurus myoxinus, Microcebus myoxinus)
- myriadenia (Guioa myriadenia, Serianthes myriadenia)
- myriantha (Eugenia myriantha, Schefflera myriantha)
- mysorensis (Fejervarya mysorensis, Zosterops mysorensis)
- nahuelbutensis (Diplomystes nahuelbutensis, Eupsophus nahuelbutensis)
- namdaphaensis (Rhacophorus namdaphaensis, Philautus namdaphaensis)
- namiyei (Rana namiyei, Limnonectes namiyei)
- nanegalense (Philodendron nanegalense, Piper nanegalense)
- nanoserranus (Haplochromis nanoserranus, Prognathochromis nanoserranus)
- nanulus (Pipistrellus nanulus, Mops nanulus)
- napaea (Sicista napaea, Litoria napaea)
- napaliensis (Canavalia napaliensis, Pritchardia napaliensis)
- napensis (Pithecia monachus napensis, Stigmatura napensis)
- narainensis (Micrixalus narainensis, Philautus narainensis)
- narina (Rana narina, Apaloderma narina)
- natalis (Zosterops natalis, Ninox natalis)
- nationi (Chaetophractus nationi, Atlapetes nationi)
- nativitatis (Puffinus nativitatis, Rattus nativitatis)
- naumanni (Falco naumanni, Turdus naumanni)
- nauticus (Isoodon obesulus nauticus, Erignathus barbatus nauticus)
- navasi (Sympetrum navasi, Pyrenaearia navasi)
- nayaur (Pseudois nayaur nayaur, Pseudois nayaur)
- neavei (Mus neavei, Lanistes neavei)
- neblinensis (Ilex neblinensis, Inga neblinensis)
- nebrodensis (Abies nebrodensis, Pleurotus nebrodensis)
- nefrens (Craugastor nefrens, Armatobalanus nefrens)
- nehrkorni (Dicaeum nehrkorni, Zosterops nehrkorni)
- nemaeus (Pygathrix nemaeus nemaeus, Pygathrix nemaeus)
- nemestrina (Eugenia nemestrina, Macaca nemestrina)
- nemorale (Anthurium nemorale, Bradypodion nemorale)
- nemoricola (Leucosticte nemoricola, Gallinago nemoricola)
- nemorosa (Pouteria nemorosa, Araucaria nemorosa)
- neocaledonica (Oxanthera neocaledonica, Callitris neocaledonica)
- nepalensis (Scutiger nepalensis, Fejervarya nepalensis)
- nephophilus (Eleutherodactylus nephophilus, Acritodon nephophilus)
- nephrolepioides (Polystichum nephrolepioides, Cyrtomium nephrolepioides)
- nesiotica (Tiquilia nesiotica, Hirasea nesiotica)
- nevilli (Gonospira nevilli, Erepta nevilli)
- newcombi (Erinna newcombi, Nesopupa newcombi)
- nexipus (Platymantis nexipus, Colostethus nexipus)
- nicaraguensis (Quiscalus nicaraguensis, Couroupita nicaraguensis)
- nicholsonii (Manilkara nicholsonii, Colubrina nicholsonii)
- nictitans (Cercopithecus nictitans stampfflii, Cercopithecus nictitans)
- nigeriensis (Gynacantha nigeriensis, Afrixalus nigeriensis)
- nigerrima (Lonchura nigerrima, Rajella nigerrima)
- nigriloris (Estrilda nigriloris, Cisticola nigriloris)
- nigritella (Bucquetia nigritella, Trochomorpha nigritella)
- nigriventer (Tyrannochromis nigriventer, Discoglossus nigriventer)
- nigrocapillus (Nothocercus nigrocapillus, Phyllomyias nigrocapillus)
- nigrocristatus (Anairetes nigrocristatus, Basileuterus nigrocristatus)
- nigrocyaneus (Todirhamphus nigrocyaneus, Todiramphus nigrocyaneus)
- nigrogriseus (Chalinolobus nigrogriseus, Eleutherodactylus nigrogriseus)
- nigrolineata (Rana nigrolineata, Ciccaba nigrolineata)
- nigrolineatum (Megalagrion nigrohamatum nigrolineatum, Megalagrion nigrolineatum)
- nigromaculatus (Yunnanilus nigromaculatus, Trachycephalus nigromaculatus)
- nigropectus (Biatas nigropectus, Eulacestoma nigropectus)
- nigrorum (Stachyris nigrorum, Zosterops nigrorum)
- nigroviridis (Allenopithecus nigroviridis, Tangara nigroviridis)
- nigrovittatus (Eleutherodactylus nigrovittatus, Callosciurus nigrovittatus)
- nilghiriensis (Berberis nilghiriensis, Anthus nilghiriensis)
- nippon (Cervus nippon, Nipponia nippon)
- nitidulus (Hyperolius nitidulus, Formicoxenus nitidulus)
- nitratoides (Dipodomys nitratoides, Dipodomys nitratoides nitratoides)
- nivicola (Ovis nivicola, Ovis nivicola nivicola)
- nobile (Leucadendron nobile, Alangium nobile)
- noblei (Philautus noblei, Craugastor noblei)
- noctivagus (Crypturellus noctivagus, Marmosops noctivagus)
- noguchii (Dendrocopos noguchii, Sapheopipo noguchii)
- nonoensis (Vernonia nonoensis, Asplundia nonoensis)
- nootkatensis (Chamaecyparis nootkatensis, Xanthocyparis nootkatensis)
- nordenstamii (Lachenalia nordenstamii, Nidorella nordenstamii)
- nordicus (Loris tardigradus nordicus, Loris lydekkerianus nordicus)
- nortoni (Eleutherodactylus nortoni, Stygobromus nortoni)
- notosticta (Plethodontohyla notosticta, Aimophila notosticta)
- noualhieri (Monomorirm noualhieri, Monomorium noualhieri)
- novaesi (Philydor novaesi, Cacajao calvus novaesi)
- noveboracensis (Coturnicops noveboracensis, Seiurus noveboracensis)
- nubigenus (Podocarpus nubigenus, Lupinus nubigenus)
- nudicaudus (Lophuromys nudicaudus, Tylomys nudicaudus)
- nudiflora (Tetrameles nudiflora, Ginoria nudiflora)
- numidicus (Lestes numidicus, Theodoxus numidicus)
- nuptialis (Trithemis nuptialis, Anoplolepis nuptialis)
- nuttalli (Ochrotomys nuttalli, Pica nuttalli)
- nuttingi (Myiarchus nuttingi, Oryzoborus nuttingi)
- nux (Bulimulus nux, Scotophilus nux)
- nyasica (Buxus nyasica, Ozoroa reticulata nyasica, Deinbollia nyasica)
- nyassana (Philippia nyassana, Melanoides nyassana)
- nympha (Pitta nympha, Tanysiptera nympha)
- oahuense (Zanthoxylum oahuense, Megalagrion oahuense)
- oaxacae (Dermophis oaxacae, Kinosternon oaxacae)
- oaxacensis (Microtus oaxacensis, Bolitoglossa oaxacensis)
- oberi (Icterus oberi, Myiarchus oberi)
- obesulus (Isoodon obesulus obesulus, Isoodon obesulus)
- oblata (Apterosperma oblata, Millettia oblata oblata)
- obliqua (Aristolochia obliqua, Zamia obliqua)
- oblongum (Eriocoelum oblongum, Archidendron oblongum)
- obscurior (Sublegatus obscurior, Crocidura obscurior)
- obsoleta (Hirundo obsoleta, Cranioleuca obsoleta)
- obstetricans (Alytes obstetricans, Alexteroon obstetricans)
- obtusata (Nectandra obtusata, Byttneria obtusata)
- obtusidens (Haplochromis obtusidens, Gaurochromis obtusidens)
- occasius (Makalata occasius, Echimys occasius)
- occultus (Centropogon occultus, Ctenomys occultus)
- oceanica (Ducula oceanica, Myiagra oceanica)
- ocellatum (Hemiscyllium ocellatum, Toxostoma ocellatum)
- ochraceiceps (Pomatorhinus ochraceiceps, Hylophilus ochraceiceps)
- ochraceiventris (Myiophobus ochraceiventris, Leptotila ochraceiventris)
- ochrogenys (Xenotilapia ochrogenys, Tamias ochrogenys)
- ockendeni (Eleutherodactylus ockendeni, Bufo ockendeni)
- octandra (Lyonia octandra, Hydnocarpus octandra)
- oculeus (Canirallus oculeus, Caloperdix oculeus)
- odoratissima (Aglaia odoratissima, Sericanthe odoratissima odoratissima, Baccaurea odoratissima)
- oedipus (Saguinus oedipus, Schistura oedipus)
- oenanthe (Oenanthe oenanthe, Callicebus oenanthe)
- oenops (Columba oenops, Patagioenas oenops)
- officinale (Guaiacum officinale, Dendrobium officinale)
- ogasawarae (Boninena ogasawarae, Boninosuccinea ogasawarae)
- ogasawarensis (Hemicordulia ogasawarensis, Rhinocypha ogasawarensis)
- ohausi (Cycloramphus ohausi, Flectonotus ohausi)
- ohridana (Cobitis ohridana, Acantholingua ohridana)
- okaloosae (Rana okaloosae, Etheostoma okaloosae)
- oktediensis (Nyctimystes oktediensis, Melanotaenia oktediensis)
- olallai (Andinophryne olallai, Myiopagis olallai)
- oliganthus (Lasianthus oliganthus, Elaeocarpus submonoceras oliganthus)
- oligocarpa (Annona oligocarpa, Horsfieldia oligocarpa)
- oligolepis (Toxotes oligolepis, Tabebuia oligolepis)
- oligotricha (Renealmia oligotricha, Guioa oligotricha)
- olivaceum (Chalcostigma olivaceum, Oncostoma olivaceum)
- olivieri (Crocidura olivieri, Amaurornis olivieri)
- oliviformis (Kentiopsis oliviformis, Drymophloeus oliviformis)
- olrogi (Cinclodes olrogi, Andalgalomys olrogi)
- omissus (Leptopelis omissus, Cyornis omissus)
- onca (Panthera onca, Rana onca)
- oocarpa (Pinus oocarpa, Ocotea oocarpa)
- opalescens (Leptolebias opalescens, Cynolebias opalescens)
- ophiodon (Scotonycteris ophiodon, Xenobatrachus ophiodon)
- ophthalmicus (Phylloscartes ophthalmicus, Chlorospingus ophthalmicus)
- opisthodon (Boophis opisthodon, Discodeles opisthodon)
- opisthomelas (Puffinus opisthomelas, Dendrobates opisthomelas)
- orca (Notropis orca, Orcinus orca)
- orcinus (Niphargus orcinus orcinus, Procambarus orcinus)
- ordii (Notharchus ordii, Dipodomys ordii)
- orenocensis (Knipolegus orenocensis, Saltator orenocensis)
- origanoides (Euphorbia origanoides, Cronquistianthus origanoides)
- orinocoensis (Pouteria orinocoensis, Ecclinusa orinocoensis)
- ornatipinnis (Lamprologus ornatipinnis, Xenotilapia ornatipinnis)
- ornatissimus (Eleutherodactylus ornatissimus, Hypsiboas ornatissimus)
- orocostalis (Eleutherodactylus orocostalis, Centrolenella orocostalis)
- orohenensis (Myrsine orohenensis, Coprosma orohenensis)
- orostruthus (Arcanator orostruthus, Modulatrix orostruthus)
- orthoclada (Euphorbia orthoclada, Euphorbia orthoclada orthoclada)
- orthognathus (Petrochromis orthognathus, Oryzias orthognathus)
- orthoneura (Matelea orthoneura, Pentagonia orthoneura)
- orthostoma (Pyxichromis orthostoma, Platyla orthostoma)
- osburni (Etheostoma osburni, Vireo osburni)
- oscitans (Anastomus oscitans, Potamopyrgus oscitans)
- oseryi (Psarocolius oseryi, Clypicterus oseryi)
- othcaloogensis (Dysnomia othcaloogensis, Epioblasma othcaloogensis)
- ouaiemensis (Cunonia ouaiemensis, Weinmannia ouaiemensis)
- ovatus (Leptodactylodon ovatus, Otopharynx ovatus)
- ovoidea (Hopea ovoidea, Manglietia ovoidea)
- oxycephala (Lacerta oxycephala, Xenorhina oxycephala)
- oxycephalus (Buergeria oxycephalus, Telmatobius oxycephalus)
- oxyurus (Treron oxyurus, Uraeotyphlus oxyurus)
- pachiteae (Mosannona pachiteae, Malmea pachiteae)
- pachyacanthus (Melocactus pachyacanthus, Melocactus pachyacanthus pachyacanthus)
- pachycheilus (Cephalakompsus pachycheilus, Otopharynx pachycheilus)
- pachydactyla (Adelophryne pachydactyla, Knema tridactyla pachydactyla)
- pachypoda (Ocotea pachypoda, Cycas pachypoda)
- pachyproctus (Ophryophryne pachyproctus, Xenophrys pachyproctus)
- pachypus (Bombina pachypus, Tylonycteris pachypus)
- pachyrrhiza (Tridentea pachyrrhiza, Opuntia pachyrrhiza)
- pacificum (Megalagrion pacificum, Erythroxylum pacificum)
- packardi (Lepidurus packardi, Orconectes australis packardi)
- pagodula (Turgenitubulus pagodula, Videna pagodula)
- palaciosi (Iberocypris palaciosi, Squalius palaciosi)
- palaestinensis (Strongylognathus palaestinensis, Acicula palaestinensis)
- palawanica (Ilex palawanica, Guioa palawanica)
- palembanica (Shorea palembanica, Aglaia palembanica)
- palenquensis (Siparuna palenquensis, Ossaea palenquensis)
- pallaryi (Barbus pallaryi, Salmo pallaryi)
- pallidiceps (Columba pallidiceps, Atlapetes pallidiceps)
- pallidiflorum (Anthurium pallidiflorum, Astronidium pallidiflorum)
- pallidifolia (Euonymus pallidifolia, Shorea pallidifolia)
- pallidipes (Cettia pallidipes, Philautus pallidipes)
- pallidirostris (Leptodactylus pallidirostris, Tockus pallidirostris)
- pallidistylus (Diaphlebia pallidistylus, Perigomphus pallidistylus)
- pallidula (Nehalennia pallidula, Eugenia pallidula)
- pallipes (Austropotamobius pallipes, Cyornis pallipes)
- palmensis (Sambucus nigra palmensis, Sambucus palmensis)
- palpebralis (Chirixalus palpebralis, Schizoeaca palpebralis)
- palpebrosus (Paleosuchus palpebrosus, Zosterops palpebrosus)
- paludinosa (Astatotilapia paludinosa, Haplochromis paludinosa)
- paludinosus (Barbus paludinosus, Atilax paludinosus)
- pan (Poecilmitis pan, Ateles geoffroyi pan)
- panamintinus (Dipodomys panamintinus, Tamias panamintinus)
- paniscus (Ateles paniscus, Pan paniscus)
- pantherina (Rana tigrina pantherina, Percina pantherina)
- pantoni (Eleutherodactylus pantoni, Eleutherodactylus pantoni pentasyringos)
- papilio (Eurypegasus papilio, Urolophus papilio)
- papuanum (Calophyllum papuanum, Falcatifolium papuanum)
- papuanus (Pipistrellus papuanus, Rhantus papuanus)
- papyracea (Achatinella papyracea, Mammea papyracea)
- paradisaea (Vidua paradisaea, Sterna paradisaea)
- paradisea (Grus paradisea, Ornithoptera paradisea)
- paradiseus (Ptiloris paradiseus, Dicrurus paradiseus)
- paradisi (Terpsiphone paradisi, Bauhinia paradisi)
- paraguariensis (Schinus longifolius paraguariensis, Ilex paraguariensis, Caesalpinia paraguariensis)
- paraguiarti (Haplochromis paraguiarti, Prognathochromis paraguiarti)
- paranaensis (Nectandra paranaensis, Eleutherodactylus paranaensis)
- paraplagiostoma (Haplochromis paraplagiostoma, Harpagochromis paraplagiostoma)
- parasitica (Pheidole parasitica, Manica parasitica)
- parcifolia (Macrozamia parcifolia, Begonia parcifolia)
- parens (Cettia parens, Areca parens)
- parietalis (Pelusios subniger parietalis, Bufo parietalis)
- parthenopaeum (Cymatium parthenopaeum, Ranella parthenopaeum)
- parvifructa (Ilex parvifructa, Lecythis parvifructa)
- parvum (Cacosternum parvum, Cacosternum nanum parvum)
- pascoensis (Topobea pascoensis, Leptodactylus pascoensis)
- pastazae (Galbula pastazae, Guatteria pastazae)
- pater (Lacerta pater, Timon pater)
- patriciae (Aechmea patriciae, Eleutherodactylus patriciae)
- patrizii (Nothobranchius patrizii, Asellia patrizii)
- patula (Palaina patula, Pinus patula)
- paucidentata (Oedipina paucidentata, Alionycteris paucidentata)
- pauciramosa (Cariniana pauciramosa, Coccothrinax pauciramosa)
- paucispinus (Sebastes paucispinus, Melocactus paucispinus)
- paulayana (Ruellia paulayana, Polycarpaea paulayana)
- pauloi (Baphia pauloi, Bertiera pauloi)
- paulsoni (Eleutherodactylus paulsoni, Epigomphus paulsoni)
- pauxi (Pauxi pauxi, Crax pauxi)
- pearsoniana (Litoria pearsoniana, Eugenia pearsoniana)
- pearsonii (Belomys pearsonii, Stapelia pearsonii)
- pecos (Gammarus pecos, Assiminea pecos)
- pecosensis (Cyprinodon pecosensis, Pyrgulopsis pecosensis)
- pectinatum (Dacrydium pectinatum, Alticorpus pectinatum)
- pectinifera (Uebelmannia pectinifera pectinifera, Uebelmannia pectinifera)
- peculiaris (Trachyandra peculiaris, Colostethus peculiaris)
- pedicellatum (Erioderma pedicellatum, Psidium pedicellatum)
- peduncularis (Plagiocheilus peduncularis, Pouteria peduncularis)
- pedunculatus (Lasianthus pedunculatus, Zyzomys pedunculatus)
- peekelii (Calophyllum peekelii, Maniltoa schefferi peekelii, Helicia peekelii)
- peguensis (Pipistrellus peguensis, Lepus peguensis)
- peleana (Clermontia peleana, Clermontia peleana peleana)
- pelengensis (Strigocuscus pelengensis, Tarsius pelengensis)
- peltatum (Nothocestrum peltatum, Xylosma peltatum)
- pembaensis (Treron pembaensis, Otus pembaensis)
- pendula (Quararibea pendula, Maillardia pendula)
- pendulus (Gonystylus pendulus, Dendropanax pendulus)
- peninsulae (Isoodon obesulus peninsulae, Apodemus peninsulae)
- peninsulare (Illicium peninsulare, Sideroxylon peninsulare)
- penita (Dysnomia penita, Epioblasma penita)
- pennata (Pterocnemia pennata, Rhea pennata)
- pennatus (Hieraaetus pennatus, Distoechurus pennatus)
- pennispinosa (Mammillaria pennispinosa pennispinosa, Mammillaria pennispinosa)
- pentandra (Mangifera pentandra, Vatica pentandra)
- pentasyringos (Eleutherodactylus pantoni pentasyringos, Eleutherodactylus pentasyringos)
- pentlandii (Tinamotis pentlandii, Nothoprocta pentlandii)
- percnopterus (Neophron percnopterus, Eleutherodactylus percnopterus)
- percoides (Prognathochromis percoides, Haplochromis percoides)
- percoriacea (Heritiera percoriacea, Aniba percoriacea)
- percussus (Prionochilus percussus, Xiphidiopicus percussus)
- peregrinus (Falco peregrinus, Pseudocheirus peregrinus)
- peregusna (Vormela peregusna peregusna, Vormela peregusna)
- perforata (Cladonia perforata, Odontocarya perforata)
- pergracilis (Canthium pergracilis, Melanoides pergracilis)
- perkinsi (Newcombia perkinsi, Exerodonta perkinsi)
- permixtus (Eleutherodactylus permixtus, Pipistrellus permixtus)
- perobliqua (Dysnomia obliquata perobliqua, Epioblasma obliquata perobliqua)
- perpallidus (Notropis perpallidus, Gerbillus perpallidus)
- perplexus (Bufo perplexus, Amphicyclotulus perplexus)
- pertinax (Contopus pertinax, Aratinga pertinax)
- peruana (Gastrotheca peruana, Cinnycerthia peruana)
- peruanum (Lagidium peruanum, Glaucidium peruanum)
- peruvianum (Styrax peruvianum, Cremastosperma peruvianum)
- pervilleana (Pongamiopsis pervilleana, Euphorbia pervilleana)
- pervillei (Nepenthes pervillei, Dalbergia pervillei)
- perviridis (Aplastodiscus perviridis, Aglaia perviridis)
- petaurista (Petaurista petaurista, Cercopithecus petaurista)
- petelotii (Cleistanthus petelotii, Enicosanthellum petelotii)
- petilus (Philautus petilus, Hobbseus petilus)
- petiolare (Palaquium petiolare, Blechnum petiolare)
- petitiana (Chassalia petitiana, Serianthes petitiana)
- petraeus (Plethodon petraeus, Nyctibatrachus petraeus)
- petricola (Neolamprologus petricola, Synodontis petricola)
- petrophilus (Sauromys petrophilus, Mormopterus petrophilus)
- petrosus (Anthus petrosus, Ptilopachus petrosus)
- petterdi (Angrobia petterdi, Beddomeia petterdi)
- petteri (Taterillus petteri, Praomys petteri)
- pfefferi (Gnathochromis pfefferi, Calamaria pfefferi)
- phaea (Campomanesia phaea, Aplodontia rufa phaea)
- phaeotis (Artibeus phaeotis, Oecomys phaeotis)
- phaeura (Crocidura phaeura, Chimarrogale phaeura)
- phantasticus (Hyperolius phantasticus, Mantidactylus phantasticus)
- pharyngomylus (Labrochromis pharyngomylus, Haplochromis pharyngomylus)
- phasianella (Beddomeia phasianella, Macropygia phasianella)
- phasianellus (Tympanuchus phasianellus, Dromococcyx phasianellus)
- phasma (Craugastor phasma, Peromyscus polionotus phasma)
- phelpsi (Cypseloides phelpsi, Streptoprocne phelpsi)
- philadelphia (Oporornis philadelphia, Larus philadelphia)
- phocaenoides (Neophocaena phocaenoides)
- phoebe (Sayornis phoebe, Metallura phoebe)
- phoenicura (Rhipidura phoenicura, Ammomanes phoenicura)
- phoxinus (Phoxinus phoxinus, Chondrostoma phoxinus)
- phrynoderma (Indirana phrynoderma, Theloderma phrynoderma)
- phrynoides (Arthroleptis phrynoides, Rana phrynoides)
- phyllophilus (Phrynobatrachus phyllophilus, Micrixalus phyllophilus)
- phyllotis (Ototylomys phyllotis, Idionycteris phyllotis)
- phytophagus (Xystichromis phytophagus, Haplochromis phytophagus)
- pica (Fluvicola pica, Pica pica)
- picadoi (Isthmohyla picadoi, Nototriton picadoi)
- picata (Oenanthe picata, Ardea picata)
- picatus (Hemipus picatus, Chalinolobus picatus)
- picazuro (Patagioenas picazuro, Columba picazuro)
- pickelii (Rollinia pickelii, Bactris pickelii)
- pickeringii (Ducula pickeringii, Pittosporum pickeringii)
- picumnus (Dendrocolaptes picumnus, Climacteris picumnus)
- pilaloensis (Miconia pilaloensis, Fuchsia pilaloensis)
- pinetorum (Agarista mexicana pinetorum, Microtus pinetorum, Solanum pinetorum)
- pingii (Oreolalax pingii, Juniperus pingii)
- pinnatifida (Cyanea pinnatifida, Hecistopteris pinnatifida)
- piperata (Litoria piperata, Gastrotheca piperata)
- piperatus (Galeus piperatus, Urolophus piperatus)
- pipilans (Cophixalus pipilans, Eleutherodactylus pipilans)
- pipra (Pipra pipra, Iodopleura pipra)
- piresii (Retrophyllum piresii, Eschweilera piresii piresii)
- pirottae (Boswellia pirottae, Anthurium pirottae)
- pirrensis (Eleutherodactylus pirrensis, Isthmomys pirrensis)
- pitcairnensis (Philonesia pitcairnensis, Sinployea pitcairnensis)
- pithecia (Pithecia pithecia, Pithecia pithecia pithecia)
- placens (Cormobates placens, Poecilodryas placens)
- plagiostoma (Haplochromis plagiostoma, Harpagochromis plagiostoma)
- planospira (Sinployea planospira, Bulimulus planospira)
- platurus (Prioniturus platurus, Anthreptes platurus)
- platycephala (Chimarrogale platycephala, Cyclorana platycephala)
- platyceps (Lechriodus platyceps, Hyperolius platyceps)
- platydactylus (Eleutherodactylus platydactylus, Hyloscirtus platydactylus)
- platynota (Notochelys platynota, Geochelone platynota)
- platyrhynchos (Platyrinchus platyrhynchos, Anas platyrhynchos)
- platyrhynchus (Hylodes platyrhynchus, Apristurus platyrhynchus)
- platysoma (Mastacembelus platysoma, Ansonia platysoma)
- platyurus (Pygeretmus platyurus, Schoenicola platyurus)
- pleurospilus (Callochromis pleurospilus, Simochromis pleurospilus)
- pleurostictus (Polypedates pleurostictus, Thryothorus pleurostictus)
- pleurostigma (Kalophrynus pleurostigma, Copadichromis pleurostigma)
- plicatus (Phrynobatrachus plicatus, Aceros plicatus)
- plicifer (Mantidactylus plicifer, Eleutherodactylus plicifer)
- plicifera (Nesopupa plicifera, Platymantis plicifera)
- plumifera (Geophaps plumifera, Guttera plumifera)
- plumosus (Pinarornis plumosus, Pycnonotus plumosus)
- plunketi (Centroscymnus plunketi, Proscymnodon plunketi)
- plurijuga (Baikiaea plurijuga, Albizia plurijuga)
- pocsii (Neckeropsis pocsii, Coffea pocsii)
- poecilocercus (Knipolegus poecilocercus, Mecocerculus poecilocercus)
- poecilops (Gerbillus poecilops, Orthetrum poecilops)
- poecilopterus (Geobates poecilopterus, Nesoclopeus poecilopterus)
- poecilotis (Phylloscartes poecilotis, Chrysomma poecilotis)
- poecilus (Meristogenys poecilus, Philautus poecilus)
- pogonias (Cercopithecus pogonias pogonias, Cercopithecus pogonias)
- pohlei (Pteropus pohlei, Castor fiber pohlei)
- poliolophus (Prionops poliolophus, Batrachostomus poliolophus)
- polionotus (Leucopternis polionotus, Peromyscus polionotus)
- polioptera (Coracina polioptera, Cossypha polioptera)
- poliopterus (Toxorhamphus poliopterus, Melierax poliopterus)
- polius (Oryzomys polius, Peromyscus polius)
- polychromaticum (Proischnura polychromaticum, Enallagma polychromaticum)
- polyneuron (Aspidosperma polyneuron, Anthurium polyneuron)
- polyommata (Raja polyommata, Dipturus polyommata)
- polyphemus (Limulus polyphemus, Gopherus polyphemus)
- polystachya (Aphanamixis polystachya, Prunus polystachya)
- polysticta (Frullania polysticta, Austrochaperina polysticta)
- polystigma (Nimbochromis polystigma, Clusia polystigma)
- polyzona (Oscaecilia polyzona, Stenogobius polyzona)
- pombali (Bufo pombali, Hypsiboas pombali)
- ponapensis (Tornatellinops ponapensis, Dendrotrochus ponapensis)
- ponceleti (Solomys ponceleti, Tribolonotus ponceleti)
- pondicerianus (Tephrodornis pondicerianus, Francolinus pondicerianus)
- ponsonbyi (Bridouxiana ponsonbyi, Bridouxia ponsonbyi)
- poortmannii (Miconia poortmannii, Columnea poortmannii)
- popelairii (Discosura popelairii, Popelairia popelairii)
- popenoei (Connarus popenoei, Ateleia popenoei)
- populifolia (Hildegardia populifolia, Bidens populifolia)
- porcata (Westraltrachia porcata, Inga porcata)
- porcus (Potamochoerus porcus, Amastra porcus)
- porosa (Ocotea porosa, Rana porosa)
- porphyrantha (Cola porphyrantha, Eugenia porphyrantha)
- porphyrocephala (Glossopsitta porphyrocephala, Matelea porphyrocephala)
- porphyrolaema (Porphyrolaema porphyrolaema, Apalis porphyrolaema)
- porphyrostachys (Drimia porphyrostachys, Bulbophyllum porphyrostachys)
- porteousi (Oreotragus oreotragus porteousi, Ctenomys porteousi)
- portlandiana (Weinmannia portlandiana, Clusia portlandiana)
- potenziani (Presbytis potenziani, Presbytis potenziani potenziani)
- poyntoni (Cacosternum poyntoni, Nectophrynoides poyntoni)
- praeclara (Bridouxiana praeclara, Bridouxia praeclara)
- praestans (Shorea praestans, Dendropsophus praestans)
- prainiana (Eugenia prainiana, Garcinia prainiana)
- prattorum (Rhynchomeles prattorum, Troides prattorum)
- preblei (Sorex preblei, Zapus hudsonius preblei)
- pretoriensis (Dicoma pretoriensis, Ceropegia decidua pretoriensis)
- pretrei (Amazona pretrei, Phaethornis pretrei)
- principalis (Eleutherodactylus principalis, Campephilus principalis)
- pritchardi (Mauremys pritchardi, Chelodina pritchardi)
- proboscidea (Rhamphophryne proboscidea, Choerophryne proboscidea)
- procumbens (Schefflera procumbens, Juniperus procumbens)
- profunda (Marsupella profunda, Kopsia profunda)
- profundicola (Lepidiolamprologus profundicola, Oryzias profundicola)
- prognathus (Prognathochromis prognathus, Haplochromis prognathus)
- proserpina (Cyprinella proserpina, Proserpinus proserpina)
- protracta (Cordia protracta, Partula protracta)
- provocax (Lutra provocax, Lontra provocax)
- proxima (Partulina proxima, Sinployea proxima)
- pruinata (Dendroseris pruinata, Trithemis pruinata)
- pruinosa (Cycas pruinosa, Actinodaphne pruinosa)
- pruinosus (Myotis pruinosus, Rhizomys pruinosus)
- pseudomacrochele (Turbinicarpus pseudomacrochele pseudomacrochele, Turbinicarpus pseudomacrochele)
- pseudopellegrini (Prognathochromis pseudopellegrini, Haplochromis pseudopellegrini)
- pseudopuma (Hyla pseudopuma infucata, Isthmohyla pseudopuma)
- pseudostipularis (Trichilia pseudostipularis, Placodiscus pseudostipularis)
- pseustes (Helenoconcha pseustes, Gastrotheca pseustes)
- psilophylla (Arapatiella psilophylla, Pterostyrax psilophylla)
- psittacea (Erythrura psittacea, Psittirostra psittacea)
- psittacula (Aethia psittacula, Camarhynchus psittacula)
- pterocalyx (Diospyros pterocalyx, Quararibea pterocalyx)
- pubicarpa (Manilkara pubicarpa, Myristica pubicarpa)
- pucheranii (Neomorphus pucheranii, Sciurus pucheranii)
- pulchellum (Todirostrum pulchellum, Diplomesodon pulchellum)
- pulgarensis (Schima wallichi pulgarensis, Diospyros pulgarensis, Prunus pulgarensis)
- pulidoi (Hypsiboas pulidoi, Eleutherodactylus pulidoi)
- pulveratus (Pipistrellus pulveratus, Hypsugo pulveratus)
- pulverulentus (Pteromyscus pulverulentus, Mulleripicus pulverulentus)
- pulvinata (Oldenlandia pulvinata, Echiochilon pulvinata)
- pulvinatus (Eleutherodactylus pulvinatus, Gerbillus pulvinatus)
- punctatissima (Knipowitschia punctatissima, Hyla punctatissima)
- punduana (Saurauia punduana, Michelia punduana)
- punicus (Myotis punicus, Pseudophoxinus punicus)
- pupiformis (Melanoides pupiformis, Phrantela pupiformis)
- pupula (Graziana pupula, Pupilla pupula)
- putorius (Mustela putorius, Spilogale putorius)
- puxiongensis (Protohynobius puxiongensis, Oreolalax puxiongensis)
- puyoense (Centrolene puyoense, Piper puyoense)
- puzeyi (Gulella puzeyi, Sheldonia puzeyi)
- pygmaeum (Oedistoma pygmaeum, Dicaeum pygmaeum)
- pyramidata (Couratari pyramidata, Gyrotoma pyramidata)
- pyramis (Heteropoma pyramis, Diplommatina pyramis)
- pyrifolia (Coprosma pyrifolia, Persea pyrifolia)
- pyriforme (Angraecum pyriforme, Pleurobema pyriforme)
- pyrrhogaster (Thripias pyrrhogaster, Cynops pyrrhogaster)
- pyrrhomerus (Eleutherodactylus pyrrhomerus, Dremomys pyrrhomerus)
- pyrrhonotus (Passer pyrrhonotus, Thomasomys pyrrhonotus)
- pyrrhops (Hapalopsittaca pyrrhops, Stachyris pyrrhops)
- pyrrhopterus (Lycocorax pyrrhopterus, Phylidonyris pyrrhopterus)
- pyrrogenys (Trichastoma pyrrogenys, Pellorneum pyrrogenys)
- quadratus (Somatogyrus quadratus, Perbrinckia quadratus)
- quadricolor (Telophorus quadricolor, Dicaeum quadricolor)
- quadricostatus (Pilosocereus floccosus quadricostatus, Leptocereus quadricostatus)
- quadripaludium (Mexipyrgus churinceanus quadripaludium, Mexithauma churinceanus quadripaludium)
- quadrivittatus (Afrixalus quadrivittatus, Tamias quadrivittatus)
- quaesita (Diospyros quaesita, Garcinia quaesita)
- quebecensis (Formicoxenus quebecensis, Myrmica quebecensis)
- quinquefasciatus (Scinax quinquefasciatus, Serranus quinquefasciatus)
- quinquevittatus (Hyperolius quinquevittatus, Dendrobates quinquevittatus)
- quintalia (Christianoconcha quintalia, Nancibella quintalia)
- quintasii (Polyscias quintasii, Ouratea quintasii)
- quinticolor (Capito quinticolor, Lonchura quinticolor)
- quixensis (Microrhopias quixensis, Ischnocnema quixensis)
- quoyi (Heterodontus quoyi, Cracticus quoyi)
- rabidensis (Bulimulus rabidensis, Alternanthera filifolia rabidensis)
- racemiflora (Burmeistera racemiflora, Abarema racemiflora)
- racemosum (Rhynchostigma racemosum, Munroidendron racemosum)
- radiatum (Glaucidium radiatum, Anthurium radiatum)
- rafflesii (Megalaima rafflesii, Dinopium rafflesii)
- raffrayana (Peroryctes raffrayana, Emballonura raffrayana)
- raivavaeensis (Macaranga raivavaeensis, Sophora raivavaeensis)
- raivavaensis (Ixora raivavaensis, Psychotria raivavaensis)
- raja (Rana cancrivora raja, Fejervarya raja)
- rajah (Maxomys rajah, Nepenthes rajah)
- ralloides (Myadestes ralloides, Ardeola ralloides)
- ramirezi (Cochranella ramirezi, Colostethus ramirezi)
- ramona (Onchomys torridus ramona, Onychomys torridus ramona)
- ramonensis (Nectandra ramonensis, Euchondrus ramonensis)
- ramosa (Solanum circinatum ramosa, Asterogyne ramosa)
- randi (Muscicapa randi, Physalaemus randi)
- rangiana (Dysnomia torulosa rangiana, Epioblasma torulosa rangiana)
- raniceps (Rana raniceps, Hypsiboas raniceps)
- raniformis (Craugastor raniformis, Litoria raniformis)
- rapaensis (Canthigaster rapaensis, Sophora rapaensis)
- raptor (Rheomys raptor, Paranyctimene raptor)
- rathbuni (Eurycea rathbuni, Typhlomolge rathbuni)
- rattoides (Mammelomys rattoides, Melomys rattoides)
- raviventris (Reithrodontomys raviventris, Reithrodontomys raviventris raviventris)
- ravus (Tomopeas ravus, Microtus chrotorrhinus ravus)
- recta (Westraltrachia recta, Ligumia recta)
- reddelli (Stygobromus reddelli, Rhamdia reddelli)
- reducta (Thermomesochra reducta, Macrozamia reducta)
- reesi (Hyperolius reesi, Bufo reesi)
- reevesii (Chinemys reevesii, Syrmaticus reevesii)
- reflexa (Nectandra reflexa, Kniphofia reflexa, Picea alcoquiana reflexa)
- reflexiflora (Passiflora reflexiflora, Pitcairnia reflexiflora)
- regisalberti (Zygonyx regisalberti, Ictinogomphus regisalberti)
- regularis (Bufo regularis, Ancylus regularis)
- reichardi (Ploceus reichardi, Serinus reichardi)
- reichei (Papillogobius reichei, Arthroleptis reichei)
- reiseri (Chirocephalus reiseri, Phyllomyias reiseri)
- relicta (Amaurospiza relicta, Myonycteris relicta)
- remotus (Conocephaloides remotus, Enconocephalus remotus)
- resinosa (Shorea resinosa, Pinus resinosa)
- restrepoi (Eleutherodactylus restrepoi, Chigua restrepoi)
- reticulatum (Pterospermum reticulatum, Cinnamomum reticulatum)
- retusus (Chlamyphorus retusus, Dipterocarpus retusus)
- revaughanii (Phyllanthus revaughanii, Diospyros revaughanii)
- revolutum (Chrysophyllum revolutum, Memecylon revolutum)
- revolutus (Stemonoporus revolutus, Phialanthus revolutus)
- rheophilus (Taudactylus rheophilus, Astylosternus rheophilus)
- rheophytica (Diospyros rheophytica, Eugenia rheophytica)
- rhinoceros (Haplophthalmus rhinoceros, Buceros rhinoceros)
- rhipidurus (Corvus rhipidurus, Echimys rhipidurus)
- rhoadesii (Chilotilapia rhoadesii, Buccochromis rhoadesii)
- rhynchocarpa (Launaea rhynchocarpa, Pouteria rhynchocarpa)
- richii (Weinmannia richii, Acacia richii)
- ricordii (Chlorostilbon ricordii, Eleutherodactylus ricordii)
- ridibunda (Rana ridibunda caralitana, Rana ridibunda)
- ridleyana (Vatica ridleyana, Elaenia ridleyana)
- riebeckii (Withania riebeckii, Heliotropium riebeckii)
- riefferii (Chlorornis riefferii, Pipreola riefferii)
- riggenbachi (Hyperolius riggenbachi, Gerbillus riggenbachi)
- rigidus (Dipterocarpus rigidus, Stemonoporus rigidus)
- rimac (Telmatobius rimac, Telmatobius rimac meridionalis)
- rimosa (Aglaia rimosa, Knema korthalsii rimosa, Myristica subcordata rimosa)
- riparium (Philodendron riparium, Cinnamomum riparium)
- risi (Porpax risi, Progomphus risi)
- rivetii (Verbesina rivetii, Miconia rivetii)
- rivulorum (Cinnamomum rivulorum, Eugenia rivulorum)
- robinsi (Priolepis robinsi, Etmopterus robinsi)
- robinsonii (Euphorbia decaryi robinsonii, Rhacophorus robinsonii, Swintonia robinsonii)
- robustior (Ravenea robustior, Miniopterus robustior)
- robustulus (Melanomys robustulus, Oryzomys robustulus)
- robynsianum (Gilbertiodendron robynsianum, Canthium robynsianum)
- rockii (Brighamia rockii, Chamaesyce rockii)
- rodericana (Geonemertes rodericana, Alectroenas rodericana)
- rodriguezi (Reithrodontomys rodriguezi, Tepuihyla rodriguezi)
- rolandae (Rana breviceps rolandae, Sphaerotheca rolandae)
- ronaldi (Beddomeia ronaldi, Eleutherodactylus ronaldi)
- rondoensis (Galagoides rondoensis, Galago rondoensis)
- roosevelti (Crocidura roosevelti, Anolis roosevelti)
- roraima (Hypsiboas roraima, Colostethus roraima)
- rosacea (Ducula rosacea, Mycteroperca rosacea)
- rosalia (Lemniscomys rosalia, Leontopithecus rosalia)
- rosalinda (Gerbillus rosalinda, Thomasomys rosalinda)
- roseicapilla (Cacatua roseicapilla, Ptilinopus roseicapilla)
- roseiflora (Degeneria roseiflora, Guzmania roseiflora)
- roseum (Xenophyllum roseum, Solanum roseum)
- roseveari (Lophuromys roseveari, Lemniscomys roseveari)
- rosmarinifolia (Calceolaria rosmarinifolia, Monticalia rosmarinifolia)
- rosmarus (Odobenus rosmarus rosmarus, Odobenus rosmarus)
- rossouwi (Thestor rossouwi, Aloeides rossouwi)
- rothii (Indigofera rothii, Litoria rothii)
- rotundus (Desmodus rotundus, Podocarpus rotundus)
- rouchi (Spelaeodiaptomus rouchi, Ceuthonectes rouchi)
- rouxi (Phrynobatrachus rouxi, Rhinolophus rouxi)
- royenii (Memecylon royenii, Elaeocarpus royenii)
- roylei (Ochotona roylei, Alticola roylei)
- rubeculoides (Prunella rubeculoides, Cyornis rubeculoides)
- rubidus (Capricornis sumatraensis rubidus, Cephalophus nigrifrons rubidus)
- rubricapillus (Megalaima rubricapillus, Melanerpes rubricapillus)
- rubricata (Neritina rubricata, Lagonosticta rubricata)
- rubricatus (Pardalotus rubricatus, Dicrostonyx rubricatus)
- rubricauda (Clytolaema rubricauda, Phaethon rubricauda)
- rubrinervis (Myristica rubrinervis rubrinervis, Acalypha rubrinervis, Tapirira rubrinervis)
- rubripes (Odontopodisma rubripes, Anas rubripes)
- rubripinnis (Nothobranchius rubripinnis, Lithochromis rubripinnis)
- rubrirostris (Arborophila rubrirostris, Cnemoscopus rubrirostris)
- rubritorquis (Trichoglossus rubritorquis, Aratinga rubritorquis)
- rubriventer (Eulemur rubriventer, Rubrisciurus rubriventer)
- rubrum (Etheostoma rubrum, Pleurobema rubrum)
- rudolfianus (Aplocheilichthys rudolfianus, Haplochromis rudolfianus)
- ruedai (Hyalinobatrachium ruedai, Eleutherodactylus ruedai)
- rufaxilla (Ampelion rufaxilla, Leptotila rufaxilla)
- ruficollaris (Todirhamphus ruficollaris, Todiramphus ruficollaris)
- rufidorsa (Rhipidura rufidorsa, Ceyx rufidorsa)
- rufigiensis (Distichodus rufigiensis, Synodontis rufigiensis)
- rufinervis (Rollinia rufinervis, Aglaia rufinervis)
- rufinus (Buteo rufinus, Arvicanthis rufinus)
- rufitorques (Accipiter rufitorques, Turdus rufitorques)
- rufivertex (Iridosornis rufivertex, Muscisaxicola rufivertex)
- rufobrunneus (Serinus rufobrunneus, Thripadectes rufobrunneus)
- rufocinerea (Terpsiphone rufocinerea, Grallaria rufocinerea)
- rufomitratus (Procolobus rufomitratus, Procolobus badius rufomitratus)
- rugulosa (Aglaia rugulosa, Drypetes usambarica rugulosa, Polylepis rugulosa)
- rugulosum (Anthurium rugulosum, Paspalum rugulosum)
- ruizii (Erythroxylum ruizii, Persea ruizii)
- rungwensis (Phrynobatrachus rungwensis, Probreviceps rungwensis)
- rupicapra (Rupicapra rupicapra rupicapra, Rupicapra rupicapra)
- ruppi (Myomys ruppi, Stenocephalemys ruppi)
- russatum (Brachyotum russatum, Todirostrum russatum)
- ryukyuensis (Coeliccia ryakyuensis ryukyuensis, Plecoglossus altivelis ryukyuensis)
- rzedowskii (Pinus rzedowskii, Dioon rzedowskii)
- sabanus (Hipposideros sabanus, Leopoldamys sabanus)
- sabina (Dasyatis sabina, Juniperus sabina)
- sabrinus (Glaucomys sabrinus, Craugastor sabrinus)
- sachalinensis (Abies sachalinensis, Microtus sachalinensis)
- sacleuxii (Erythrina sacleuxii, Millettia sacleuxii, Pouteria alnifolia sacleuxii)
- sagittirostris (Hemignathus sagittirostris, Viridonia sagittirostris)
- saimensis (Phoca hispida saimensis, Pusa hispida saimensis)
- salamonis (Solomys salamonis, Gallicolumba salamonis)
- salaziensis (Ctenophila salaziensis, Begonia salaziensis)
- salinasensis (Disconaias salinasensis, Lampsilis salinasensis)
- salmoni (Brachygalba salmoni, Chrysothlypis salmoni)
- saloyensis (Verbesina saloyensis, Idiopappus saloyensis)
- salvinii (Bolitoglossa salvinii, Staurotypus salvinii)
- sambiranensis (Borassus sambiranensis, Ravenea sambiranensis)
- samhaensis (Leucas samhaensis, Portulaca samhaensis)
- samuelii (Clermontia samuelii, Clermontia samuelii samuelii)
- sanctacrucis (Pteropus sanctacrucis, Nyctimene sanctacrucis)
- sanctae-barbarae (Passiflora sanctae-barbarae, Sphaeradenia sanctae-barbarae)
- sanctaecatarinae (Megascops sanctaecatarinae, Otus sanctaecatarinae)
- sanctaemartae (Scytalopus sanctaemartae, Eleutherodactylus sanctaemartae)
- sandersoni (Eleutherodactylus sandersoni, Phrynodon sandersoni)
- sanguinolentus (Ramphocelus sanguinolentus, Pardirallus sanguinolentus)
- sanmartini (Melanophryniscus sanmartini, Colostethus sanmartini)
- santaritensis (Miconia santaritensis, Quararibea santaritensis)
- saphirina (Geotrygon saphirina, Umma saphirina)
- sarda (Hyla sarda, Sylvia sarda)
- sardus (Prolagus sardus, Discoglossus sardus)
- sarmentosa (Azima sarmentosa, Scutellaria sarmentosa)
- sartori (Dendropsophus sartori, Craugastor sartori)
- saterei (Mico saterei, Callithrix saterei)
- satura (Gulella usagarica satura, Lampsilis satura)
- saturninus (Thamnomanes saturninus, Mimus saturninus)
- saudiya (Gazella saudiya, Gazella dorcas saudiya)
- saueri (Philautus saueri, Turbinicarpus saueri)
- saulosi (Pseudotropheus saulosi, Aulonocara saulosi)
- saundersi (Larus saundersi, Sterna saundersi)
- sauteri (Pseudoamolops sauteri, Rana sauteri johnsi)
- sauvagei (Ptyochromis sauvagei, Haplochromis sauvagei)
- savilei (Eupodotis savilei, Bandicota savilei)
- saxicolor (Panthera pardus saxicolor, Crocothemis saxicolor)
- sayi (Cordulegaster sayi, Zoraena sayi)
- scaberulum (Anthurium scaberulum, Blechnum scaberulum)
- scabrida (Huperzia scabrida, Saurauia scabrida)
- scansor (Perbrinckia scansor, Sclerurus scansor)
- scapularis (Phrynobatrachus scapularis, Alisterus scapularis)
- schadenbergi (Atrophaneura schadenbergi, Crateromys schadenbergi)
- schauinslandi (Monachus schauinslandi, Caconemobius schauinslandi)
- schelkovnikovi (Microtus schelkovnikovi, Neomys schelkovnikovi)
- schiedeana (Magnolia schiedeana, Persea schiedeana)
- schimpfii (Pearcea schimpfii, Pilea schimpfii)
- schippii (Ficus schippii, Quiina schippii)
- schirchi (Dasypops schirchi, Proceratophrys schirchi)
- schisticolor (Myrmotherula schisticolor, Myopus schisticolor)
- schlieffeni (Nycticeinops schlieffeni, Nycticeius schlieffeni)
- schmackeri (Philautus schmackeri, Rana schmackeri)
- schmidtorum (Duellmanohyla schmidtorum, Micronycteris schmidtorum)
- schmiedickeanus (Turbinicarpus schmiedickeanus, Turbinicarpus schmiedickeanus schmiedickeanus)
- schomburgkii (Micropygia schomburgkii, Lecythis schomburgkii)
- schreibersii (Miniopterus schreibersii, Heliodoxa schreibersii)
- schrenckii (Acipenser schrenckii, Isodactylium schrenckii)
- schubarti (Dendropsophus schubarti, Chiasmocleis schubarti)
- schunkei (Paramachaerium schunkei, Eugenia schunkei)
- schweizeri (Macrovipera schweizeri, Natrix natrix schweizeri)
- sclerocarpa (Multidentia sclerocarpa, Pouteria sclerocarpa)
- scoresbii (Leucophaeus scoresbii, Larus scoresbii)
- scorteccii (Bufo scorteccii, Tomopterna scorteccii)
- scotops (Serinus scotops, Eremomela scotops)
- scottmorii (Couratari scottmorii, Couepia scottmorii)
- scouleri (Cordia scouleri, Enicurus scouleri)
- scripta (Geophaps scripta, Trachemys scripta)
- scriptus (Tragelaphus scriptus, Elanus scriptus)
- sculpturatus (Mantidactylus sculpturatus, Bulimulus sculpturatus)
- scutulata (Cairina scutulata, Ninox scutulata)
- secundus (Otomops secundus, Rhadamanthus secundus)
- seductus (Otus seductus, Megascops seductus)
- sedulus (Rhinolophus sedulus, Tamias umbrinus sedulus)
- seimundi (Nectarinia seimundi, Treron seimundi)
- selangorica (Payena selangorica, Madhuca selangorica)
- selysi (Diastatomma selysi, Phyllogomphus selysi)
- semicollaris (Streptoprocne semicollaris, Rostratula semicollaris)
- semifasciata (Triakis semifasciata, Tityra semifasciata)
- semipalmata (Indirana semipalmata, Anseranas semipalmata)
- semiplumbeus (Leucopternis semiplumbeus, Rallus semiplumbeus)
- semirufus (Myiarchus semirufus, Atlapetes semirufus)
- semispinosus (Hemicentetes semispinosus, Proechimys semispinosus)
- senegallus (Vanellus senegallus, Pterocles senegallus)
- senegalus (Tchagra senegalus, Poicephalus senegalus)
- serena (Pipra serena, Lepidothrix serena)
- serenus (Progomphus serenus, Nyassachromis serenus)
- sernai (Atelopus sernai, Eleutherodactylus sernai)
- serotina (Begonia serotina, Pinus serotina)
- serpens (Oedipina serpens, Nassauvia serpens)
- serrana (Upucerthia serrana, Formicivora serrana)
- serrator (Morus serrator, Mergus serrator)
- serrulata (Dracaena serrulata, Bowenia serrulata)
- sessiliflora (Madhuca sessiliflora, Freziera sessiliflora, Campomanesia sessiliflora sessiliflora)
- sessiliflorus (Dendropanax sessiliflorus, Oreopanax sessiliflorus)
- sessilifructa (Ilex sessilifructa, Myristica tristis sessilifructa)
- setiger (Platymops setiger, Mormopterus setiger)
- setosa (Monadenia setosa, Eugenia setosa)
- setulosa (Bactris setulosa, Miconia setulosa)
- setulosus (Eleutherococcus setulosus, Mus setulosus)
- severus (Falco severus, Ara severus)
- sevillana (Critoniopsis sevillana, Pentacalia sevillana)
- sharpii (Apalis sharpii, Cinnyricinclus sharpii)
- shermani (Sciurus niger shermani, Plethodon shermani)
- shihi (Eodiaptomus shihi, Ranodon shihi)
- showalteri (Lepyrium showalteri, Pleurocera showalteri)
- sierramadrensis (Platymantis sierramadrensis, Rana sierramadrensis)
- sikimensis (Chaparana sikimensis, Microtus sikimensis)
- sila (Gambelia sila, Smilisca sila)
- silvanus (Zosterops silvanus, Mantidactylus silvanus)
- silvaticus (Micrixalus silvaticus, Philautus silvaticus)
- simmonsi (Hyloscirtus simmonsi, Ischnocnema simmonsi)
- simoni (Gerbillus simoni, Aneuretus simoni)
- simonii (Mesalina simonii, Rhinotyphlops simonii)
- simpsoni (Gaurochromis simpsoni, Haplochromis simpsoni)
- simpsonii (Dalbergia simpsonii, Juttadinteria simpsonii)
- simrothi (Arion simrothi, Bulimulus simrothi)
- simulatus (Atelopus simulatus, Habromys simulatus)
- simum (Ceratotherium simum, Ceratotherium simum simum)
- sinclairii (Myristica sinclairii, Meryta sinclairii)
- sinicus (Rhinolophus sinicus, Dipentodon sinicus)
- sinuatus (Skistodiaptomus sinuatus, Cardinalis sinuatus)
- sinuosa (Racinaea sinuosa, Hirasea sinuosa)
- sipora (Iomys sipora, Hylopetes sipora)
- sirensis (Meliosma sirensis, Dendrobates sirensis)
- sirintarae (Eurochelidon sirintarae, Pseudochelidon sirintarae)
- sisparense (Glochidion sisparense, Memecylon sisparense)
- sissonii (Troglodytes sissonii, Thryomanes sissonii)
- sitkensis (Microtus oeconomus sitkensis, Peromyscus sitkensis)
- situla (Zamenis situla, Elaphe situla)
- sjoestedti (Papilio sjoestedti, Pseudagrion sjoestedti)
- sketi (Alona sketi, Idunella sketi)
- skinneri (Quercus skinneri, Zamia skinneri)
- sladeniae (Apus barbatus sladeniae, Apus sladeniae)
- sloatianus (Elliptoideus sloatianus, Nephronaias sloatianus)
- slovenica (Nitocrella slovenica, Belgrandiella slovenica)
- slovenicus (Proasellus slovenicus, Niphargus ilidzensis slovenicus)
- smaragdinus (Epipedobates smaragdinus, Rhacophorus smaragdinus)
- smithianus (Holopogon smithianus, Lupinus smithianus)
- soaresi (Physalaemus soaresi, Dendropsophus soaresi)
- sociabilis (Rostrhamus sociabilis, Ctenomys sociabilis)
- societatis (Arielulus societatis, Pipistrellus societatis)
- soemmerringii (Syrmaticus soemmerringii, Gazella soemmerringii)
- sokotrana (Indigofera sokotrana, Lindenbergia sokotrana)
- solaris (Pericrocotus solaris, Nectarinia solaris)
- solisii (Dendrophorbium solisii, Centropogon solisii)
- solitaris (Ficedula solitaris, Anisogomphus solitaris)
- solstitialis (Troglodytes solstitialis, Aratinga solstitialis)
- somaliensis (Phoeniculus somaliensis, Equus africanus somaliensis)
- somereni (Scutisorex somereni, Barbus somereni)
- sonchifolia (Meryta sonchifolia, Ardisia sonchifolia)
- sondaicus (Rhinoceros sondaicus sondaicus, Rhinoceros sondaicus)
- sonneratii (Cacomantis sonneratii, Gallus sonneratii)
- sonomae (Sorex sonomae, Tamias sonomae)
- sorella (Ochotona cansus sorella, Mus sorella)
- soricoides (Microgale soricoides, Rhynchomys soricoides)
- sororcula (Penescosta sororcula, Tyto sororcula)
- souffia (Telestes souffia, Leuciscus souffia)
- sousae (Guibourtia sousae, Symplocos sousae)
- sparreorum (Anthurium sparreorum, Syngonium sparreorum)
- spartacus (Satanellus spartacus, Dasyurus spartacus)
- spathoides (Dacrydium spathoides, Podocarpus spathoides)
- spathulatum (Syzygium spathulatum, Homalium spathulatum)
- speciosum (Conirostrum speciosum, Scaphophyllum speciosum)
- spectabile (Elaphoglossum spectabile, Echium onosmifolium spectabile)
- specularioides (Anas specularioides, Lophonetta specularioides)
- specularis (Anas specularis, Speculanas specularis)
- spelaeus (Speleoperipatus spelaeus, Typhlotriton spelaeus)
- sphagnicola (Synaptomys borealis sphagnicola, Cophixalus sphagnicola)
- sphenophylla (Ficus sphenophylla, Guarea sphenophylla)
- sphenurus (Haliastur sphenurus, Treron sphenurus)
- sphinx (Mandrillus sphinx, Cynopterus sphinx)
- spiciformis (Marila spiciformis, Coussarea spiciformis)
- spicilegus (Peromyscus spicilegus, Mus spicilegus)
- spilota (Mogurnda spilota, Cochranella spilota)
- spinatus (Chaetodipus spinatus, Stygobromus spinatus)
- spinicauda (Acanthodactylus spinicauda, Aphrastura spinicauda)
- spinifer (Mesobola spinifer, Austrosaga spinifer)
- spirulina (Disculella spirulina, Ochthephila spirulina)
- spissum (Syzygium cordifolium spissum, Syzygium spissum)
- spixi (Synallaxis spixi, Leptodactylus spixi)
- spodiopygia (Collocalia spodiopygia)
- spodiurus (Oryzomys spodiurus, Pachyramphus spodiurus)
- spumarius (Atelopus spumarius, Atelopus spumarius barbotini)
- spurca (Pseudocampylaea spurca, Pseudohelenoconcha spurca)
- squamiceps (Lophozosterops squamiceps, Turdoides squamiceps)
- squamifrons (Sporopipes squamifrons, Oculocincta squamifrons)
- squamipinnis (Oreochromis squamipinnis, Haplochromis squamipinnis)
- squamosus (Heliomaster squamosus, Centrophorus squamosus)
- stalkeri (Tephrozosterops stalkeri, Myotis stalkeri)
- standleyana (Ardisia standleyana, Joosia standleyana)
- stanleyi (Gabbiella stanleyi, Chalcostigma stanleyi)
- stapfiana (Eugenia stapfiana, Vatica stapfiana)
- starostini (Troglocobitis starostini, Nemacheilus starostini)
- stellaris (Pygiptila stellaris, Botaurus stellaris)
- stellatum (Craibiodendron stellatum, Theloderma stellatum)
- stelleri (Cyanocitta stelleri, Polysticta stelleri)
- stenoclada (Euphorbia stenoclada stenoclada, Euphorbia stenoclada)
- stenodactylus (Hyperolius stenodactylus, Arthroleptis stenodactylus)
- stenosepala (Palicourea stenosepala, Tournefortia stenosepala)
- stenura (Hernandia stenura, Gallinago stenura)
- sterreri (Platyops sterreri, Somersiella sterreri)
- stewartii (Scalesia stewartii, Achatinella stewartii)
- steyermarki (Dendrobates steyermarki, Otophryne steyermarki)
- stictica (Phyllopetalia stictica, Trithemis stictica)
- stictogaster (Callulops stictogaster, Eleutherodactylus stictogaster)
- stictopterus (Mecocerculus stictopterus, Touit stictopterus)
- stictothorax (Dysithamnus stictothorax, Synallaxis stictothorax)
- sticturus (Thamnophilus sticturus, Herpsilochmus sticturus)
- stigmaticum (Aylacostoma stigmaticum, Trematocara stigmaticum)
- stimpsoni (Sicydium stimpsoni, Sicyopterus stimpsoni)
- stipulare (Geniostoma stipulare, Dicraeopetalum stipulare)
- stochi (Hadzia fragilis stochi, Nitocrella stochi)
- stolidus (Myiarchus stolidus, Anous stolidus)
- stomaticus (Bufo stomaticus peninnsularis, Bufo stomaticus)
- stonemani (Aulonocara stonemani, Placidochromis stonemani)
- stormi (Ciconia stormi, Plethodon stormi)
- strachani (Sphaerotheca strachani, Bradinopyga strachani)
- straminea (Lampsilis straminea straminea, Palaua straminea)
- stramineus (Natalus stramineus, Sciurus stramineus)
- strenua (Ninox strenua, Aratinga strenua)
- strepera (Elaenia strepera, Anas strepera)
- strepitans (Garrulax strepitans, Phyllastrephus strepitans)
- streptophorus (Francolinus streptophorus, Lipaugus streptophorus)
- streyi (Anginon streyi, Pseudosalacia streyi)
- strigata (Sphaerotheca strigata, Palaina strigata)
- strigatus (Dimidiochromis strigatus, Labidochromis strigatus)
- striolatus (Nystalus striolatus, Serinus striolatus)
- strophiata (Ficedula strophiata, Prunella strophiata)
- stuartgranti (Aulonocara stuartgranti, Iodotropheus stuartgranti)
- stuebelii (Hypochaeris stuebelii, Freziera stuebelii)
- stygius (Niphargus stygius stygius, Asio stygius)
- suberosa (Inga suberosa, Freziera suberosa)
- sublineatus (Funambulus sublineatus, Delomys sublineatus)
- subplana (Lexingtonia subplana, Dogania subplana)
- subrotunda (Fusconaia subrotunda, Obovaria subrotunda)
- subrufa (Carollia subrufa, Turdoides subrufa)
- subruficollis (Aceros subruficollis, Tryngites subruficollis)
- subspinosus (Chaetomys subspinosus, Acomys subspinosus)
- subulata (Araucaria subulata, Urosphena subulata)
- subulatus (Todus subulatus, Hyloctistes subulatus)
- subverticillata (Pradosia subverticillata, Pachystela subverticillata)
- subverticillatum (Synsepalum subverticillatum)
- subvinacea (Columba subvinacea, Patagioenas subvinacea)
- subviridis (Lasmigona subviridis, Phylloscopus subviridis)
- suillus (Hylomys suillus, Bathyergus suillus)
- sula (Coracina sula, Sula sula)
- sulcirostris (Phalacrocorax sulcirostris, Crotophaga sulcirostris)
- sulphuratus (Pitangus sulphuratus, Serinus sulphuratus)
- suluensis (Albizia suluensis, Rana suluensis)
- sumatrae (Hystrix sumatrae, Panthera tigris sumatrae)
- sumatraensis (Capricornis sumatraensis sumatraensis, Capricornis sumatraensis)
- sungorus (Stylodipus sungorus, Phodopus sungorus)
- superans (Vespertilio superans, Oecomys superans)
- supramontis (Hydromantes supramontis, Speleomantes supramontis)
- surinamus (Pachyramphus surinamus, Tachyphonus surinamus)
- surrufus (Philautus surrufus, Stiphodon surrufus)
- suteri (Peripatoides suteri, Omphalotropis suteri)
- suturalis (Omphalotropis suturalis, Partula suturalis)
- svallize (Leuciscus svallize, Squalius svallize)
- svensonii (Citharexylum svensonii, Stachytarpheta svensonii)
- swierstrai (Chiloglanis swierstrai, Francolinus swierstrai)
- swynnertoni (Hyperolius swynnertoni, Swynnertonia swynnertoni)
- syhadrensis (Fejervarya syhadrensis, Rana limnocharis syhadrensis)
- sylvia (Poecilotriccus sylvia, Tanysiptera sylvia)
- symbiotica (Myrmica symbiotica, Pheidole symbiotica)
- tabularis (Nasa tabularis, Chukrasia tabularis)
- tabuliformis (Pinus tabuliformis, Pinus tabuliformis henryi)
- tacanensis (Symplocos tacanensis, Abies guatemalensis tacanensis, Bufo tacanensis)
- taciturnus (Eleutherodactylus taciturnus, Arremon taciturnus)
- taeniabronchum (Bradypodion taeniabronchum, Bradypodion pumilum taeniabronchum)
- taeniolata (Palaina taeniolata, Achatinella taeniolata)
- taeniolatus (Phyllopteryx taeniolatus, Protomelas taeniolatus)
- taeniopygus (Nothobranchius taeniopygus, Nothobranchius aff. taeniopygus)
- taihangnicus (Paa taihangnicus, Chaparana taihangnicus)
- taitungensis (Cycas taitungensis, Hemimyzon taitungensis)
- taivanus (Plecotus taivanus, Pycnonotus taivanus)
- talaudensis (Gymnocrex talaudensis, Horsfieldia talaudensis)
- talbotae (Formica talbotae, Monomorium talbotae)
- tamsitti (Eleutherodactylus latidiscus tamsitti, Eleutherodactylus tamsitti)
- tandyi (Tomopterna tandyi, Werneria tandyi)
- tangitanus (Lacerta tangitanus, Timon tangitanus)
- tapoatafa (Phascogale tapoatafa tapoatafa, Phascogale tapoatafa)
- taprobanica (Kaloula taprobanica, Kaloula pulchra taprobanica)
- tarabinii (Clarotes tarabinii, Pardiglanis tarabinii)
- tarapacana (Mobula tarapacana, Polylepis tarapacana)
- tarapacensis (Tropidurus tarapacensis, Microlophus tarapacensis)
- taronensis (Rhacophorus taronensis, Berberis taronensis)
- tasanae (Ingerana tasanae, Rana tasanae)
- tatarica (Saiga tatarica tatarica, Saiga tatarica)
- tatricus (Microtus tatricus, Spelaeodiscus tatricus)
- taurica (Podarcis taurica gaigeae, Podarcis taurica)
- tauricus (Podarcis tauricus, Chalepoxenus tauricus)
- taurus (Carcharias taurus, Craugastor taurus)
- tawarensis (Rasbora tawarensis, Poropuntius tawarensis)
- taxicolor (Budorcas taxicolor, Budorcas taxicolor taxicolor)
- tecta (Eugenia tecta, Kachuga tecta)
- tegulaneus (Encephalartos tegulaneus tegulaneus, Encephalartos tegulaneus)
- telegrapha (Omiodes telegrapha, Hedylepta telegrapha)
- telfairii (Leiolopisma telfairii, Agonostomus telfairii)
- tellinii (Ptychadena tellinii, Phrynobatrachus tellinii)
- temehaniensis (Ixora temehaniensis, Pandanus temehaniensis)
- temnurus (Temnurus temnurus, Priotelus temnurus)
- tenebrosus (Phyllastrephus tenebrosus, Dicamptodon tenebrosus)
- tenella (Auriculella tenella, Neomixis tenella)
- tener (Calomys tener, Loriculus tener)
- teneriffae (Regulus teneriffae, Plecotus teneriffae)
- tenerum (Hymenophyllum tenerum, Elaphoglossum tenerum)
- tennesseensis (Phoxinus tennesseensis, Somatogyrus tennesseensis)
- tentaculata (Nepenthes tentaculata, Caecilia tentaculata)
- tenuifolium (Illicium tenuifolium, Anthurium tenuifolium)
- tenuifolius (Darwiniothamnus tenuifolius, Goniothalamus tenuifolius)
- tenuipes (Cyclophyllum tenuipes, Neacomys tenuipes)
- tenuipinnis (Neoromicia tenuipinnis, Eptesicus tenuipinnis)
- tenuissima (Caecilia tenuissima, Diclis tenuissima)
- tephronotus (Turdus tephronotus, Lanius tephronotus)
- teraiensis (Fejervarya teraiensis, Polypedates teraiensis)
- teres (Gonospira teres, Elimia teres)
- teretifolia (Monticalia teretifolia, Calamagrostis teretifolia)
- terminalioides (Pittosporum terminalioides, Soulamea terminalioides)
- ternetzi (Pseudopaludicola ternetzi, Barycholos ternetzi)
- terraereginae (Collocalia terraereginae, Limnodynastes terraereginae)
- tessellata (Partulina tessellata, Carex tessellata)
- tessellatus (Cualac tessellatus, Centrophorus tessellatus)
- tessmannii (Attalea tessmannii, Tachigali tessmannii)
- testudo (Rhombophryne testudo, Ceratophrys testudo)
- tetrandra (Mastixia tetrandra, Begonia tetrandra)
- tetrapetala (Eschweilera tetrapetala, Trichilia tetrapetala)
- tetraptera (Euphorbia tetraptera tetraptera, Euphorbia tetraptera, Pteleopsis tetraptera)
- teuszii (Sousa teuszii, Pandanus teuszii)
- texana (Tartarocreagris texana, Cochliopa texana)
- texanus (Procambarus texanus, Xyrauchen texanus)
- textilis (Amytornis textilis, Labidochromis textilis)
- thalassinus (Eumyias thalassinus, Colibri thalassinus)
- thalia (Partula thalia, Crocidura thalia)
- thamicola (Homaloptera thamicola, Cryptotora thamicola)
- theresae (Crocidura theresae, Montifringilla theresae)
- theresiae (Metallura theresiae, Polytmus theresiae)
- thermalis (Gazania thermalis, Pyrgulopsis thermalis)
- thersites (Mops thersites, Semnopithecus entellus thersites)
- thetis (Thylogale thetis, Partula thetis)
- thibetana (Ochotona thibetana, Macaca thibetana)
- thilius (Agelaius thilius, Agelasticus thilius)
- tholloni (Mesoperipatus tholloni, Myrmecocichla tholloni)
- thomasii (Rinorea thomasii, Dendrophthora thomasii)
- thomasseti (Nesomantis thomasseti, Gulella thomasseti)
- thomassetii (Cassipourea thomassetii, Grisollea thomassetii)
- thorectes (Plectrohyla thorectes, Eleutherodactylus thorectes)
- thuragnathus (Haplochromis thuragnathus, Harpagochromis thuragnathus)
- thurifera (Anisoptera thurifera thurifera, Juniperus thurifera)
- thurstoni (Mobula thurstoni, Samoana thurstoni)
- tianschanica (Sicista tianschanica, Bufo tianschanica)
- tibetana (Budorcas taxicolor tibetana, Aralia tibetana)
- tigrinus (Leopardus tigrinus, Lanius tigrinus)
- timoriensis (Megalurus timoriensis, Nyctophilus timoriensis)
- tinniens (Cisticola tinniens, Philautus tinniens)
- tokudae (Mogera tokudae, Pteropus tokudae)
- tonduzii (Quercus tonduzii, Guatteria tonduzii)
- tonkeana (Macaca tonkeana hecki, Macaca tonkeana)
- torqueola (Arborophila torqueola, Sporophila torqueola)
- torrei (Boromys torrei, Hymenaea torrei)
- torreyana (Pinus torreyana torreyana, Pinus torreyana)
- torulosum (Cymbopetalum torulosum, Notospartium torulosum)
- toxopei (Parantica toxopei, Charmosyna toxopei)
- trabeata (Alouatta palliata trabeata, Alouatta coibensis trabeata)
- trachyphylla (Ilex trachyphylla, Salvia trachyphylla)
- traillii (Empidonax traillii, Oriolus traillii)
- transcaucasicus (Pelobates transcaucasicus, Cotoneaster transcaucasicus)
- travancoricus (Bufo travancoricus, Philautus travancoricus)
- traversi (Petroica traversi, Paryphanta traversi)
- trevelyani (Barbus trevelyani, Chrysospalax trevelyani)
- trichocalyx (Brachyotum trichocalyx, Psychotria trichocalyx)
- trichocarpa (Ilex trichocarpa, Dalbergia trichocarpa)
- trichophylla (Euphorbia trichophylla, Diospyros trichophylla)
- trichopsis (Otus trichopsis, Megascops trichopsis)
- trichopus (Zygogeomys trichopus, Podandrogyne trichopus)
- trichotis (Chibchanomys trichotis, Allocebus trichotis)
- tricinctus (Tolypeutes tricinctus, Mantidactylus tricinctus)
- tridentatus (Boucardicus tridentatus, Tachypleus tridentatus)
- trifasciata (Cuora trifasciata, Cardioglossa trifasciata)
- trifidum (Acisoma trifidum, Hymenophyllum trifidum)
- trifoliatus (Rhinolophus trifoliatus, Gasteranthus trifoliatus)
- trifoliolata (Oricia trifoliolata, Vepris trifoliolata)
- trilineata (Arctogalidia trivirgata trilineata, Lacerta trilineata)
- trinotatus (Zapus trinotatus, Accipiter trinotatus)
- tripetala (Uvariopsis tripetala, Dennettia tripetala)
- triton (Tscherskia triton, Mus triton)
- trivialis (Anthus trivialis, Pyrgulopsis trivialis)
- trivirgata (Dactylopsila trivirgata, Arctogalidia trivirgata)
- tropica (Bettongia tropica, Fregetta tropica)
- trossulus (Batrachylodes trossulus, Mesodon clausus trossulus)
- truncatum (Enallagma truncatum, Epimedium truncatum)
- trunciflora (Guarea trunciflora, Annona trunciflora)
- tsaratananensis (Dalbergia tsaratananensis, Dypsis tsaratananensis)
- tsuensis (Hynobius tsuensis, Martes melampus tsuensis)
- tuberculatum (Xylosma tuberculatum, Heteropoma tuberculatum)
- tuberculosus (Phyllodytes tuberculosus, Pedostibes tuberculosus)
- tuberilinguis (Staurois tuberilinguis, Hyperolius tuberilinguis)
- tuberosum (Solanopteris tuberosum, Mitu tuberosum)
- tucumana (Pleurodema tucumana, Amazona tucumana)
- tularensis (Onchomys torridus tularensis, Onychomys torridus tularensis)
- tulearensis (Ormocarpopsis tulearensis, Euphorbia milii tulearensis, Euphorbia tulearensis)
- tullbergi (Praomys tullbergi, Campethera tullbergi)
- tumidifrons (Natalus tumidifrons)
- tumifrons (Atelopus tumifrons, Melanophryniscus tumifrons)
- tumultuosus (Pionus tumultuosus, Alsodes tumultuosus)
- tunguraguae (Phaedranassa tunguraguae, Acalypha tunguraguae)
- tungurahuae (Pilea tungurahuae, Critoniopsis tungurahuae)
- turcmenica (Capra aegagrus turcmenica)
- turdinus (Campylorhynchus turdinus, Ptyrticus turdinus)
- turgida (Achatinella turgida, Partula turgida)
- turkestanicus (Hynobius turkestanicus, Rattus turkestanicus)
- turricula (Discula turricula, Carelia turricula)
- turskyi (Leuciscus turskyi, Telestes turskyi)
- turtur (Pachyptila turtur, Streptopelia turtur)
- tutensis (Clethra tutensis, Bunchosia tutensis)
- tuvinicus (Castor fiber tuvinicus, Alticola tuvinicus)
- tweddlei (Astatotilapia tweddlei, Haplochromis tweddlei)
- tyrannina (Dendrocincla tyrannina, Cercomacra tyrannina)
- tyrannus (Tyrannus tyrannus, Spizaetus tyrannus)
- tytleri (Rana tytleri, Phylloscopus tytleri)
- udzungwensis (Galago udzungwensis, Xenoperdix udzungwensis)
- ugandensis (Nothobranchius ugandensis, Beilschmiedia ugandensis)
- ukliva (Telestes ukliva, Leuciscus ukliva)
- uliginosa (Knema uliginosa, Shorea uliginosa)
- ultramarina (Vini ultramarina, Aphelocoma ultramarina)
- ulugurensis (Sericanthe odoratissima ulugurensis, Allanblackia ulugurensis, Cynometra ulugurensis)
- umbellata (Ixora umbellata, Tillandsia umbellata)
- umbellatum (Geniostoma umbellatum, Tropaeolum umbellatum)
- umbonata (Litoria umbonata, Vatica umbonata)
- umbra (Otus umbra, Philautus umbra)
- umbraculifera (Corypha umbraculifera, Dracaena umbraculifera)
- umbratilis (Cola umbratilis, Rhinomyias umbratilis)
- umbrina (Colluricincla umbrina, Pseudemydura umbrina)
- umbrinus (Tamias umbrinus, Thomomys umbrinus)
- unalascensis (Dicrostonyx unalascensis unalascensis, Dicrostonyx unalascensis)
- undata (Sylvia undata, Quercus undata)
- undatus (Celeus undatus, Lybius undatus)
- undulatum (Homalium undulatum, Acer undulatum)
- unguiculatus (Sorex unguiculatus, Meriones unguiculatus)
- unicinctus (Parabuteo unicinctus, Cabassous unicinctus)
- unirufus (Lipaugus unirufus, Centropus unirufus)
- unisulcatus (Potamonautes unisulcatus, Otomys unisulcatus)
- uranoscopus (Batrachus uranoscopus, Gobio uranoscopus)
- urostigma (Barbus urostigma, Bagrus urostigma)
- ussuriensis (Hyla ussuriensis, Murina ussuriensis)
- ustus (Parasitaxus ustus, Saimiri ustus)
- uxpanapana (Ocotea uxpanapana, Rinorea uxpanapana)
- uxpanapensis (Elaeagia uxpanapensis, Eugenia uxpanapensis)
- vaccinioides (Cleyera vaccinioides, Diospyros vaccinioides)
- vagabunda (Litoria vagabunda, Dendrocitta vagabunda)
- vagans (Cuculus vagans, Conacmella vagans)
- vagrans (Aneides vagrans, Sorex vagrans)
- valdivianus (Geoxus valdivianus, Borborocoetus valdivianus)
- valenzuelana (Cordia valenzuelana, Manilkara valenzuelana)
- vallicola (Microtus californicus vallicola, Terua vallicola)
- valvata (Eugenia valvata, Begonia valvata)
- vanbrinkae (Coenagrion vanbrinkae, Cordulegaster vanbrinkae)
- vanheurni (Dorcopsulus vanheurni, Melanotaenia vanheurni)
- vanikorensis (Myiagra vanikorensis, Collocalia vanikorensis)
- varicosa (Alasmidonta varicosa, Alismodonta varicosa)
- variegaticeps (Alcippe variegaticeps, Anabacerthia variegaticeps)
- variolosus (Cacomantis variolosus, Hypopachus variolosus)
- vaucheri (Podarcis hispanicus vaucheri, Podarcis vaucheri)
- vaughani (Zosterops vaughani, Acrocephalus vaughani)
- velata (Brazieria velata, Philentoma velata)
- velutinum (Cynanchum velutinum, Apiopetalum velutinum)
- velutinus (Thylamys velutinus, Pachnodus velutinus)
- venaticus (Speothos venaticus, Acinonyx jubatus venaticus)
- venator (Prognathochromis venator, Haplochromis venator)
- venezuelae (Rhipidomys venezuelae, Neusticomys venezuelae)
- ventrimarmoratus (Eleutherodactylus ventrimarmoratus, Leptodactylodon ventrimarmoratus)
- veraepacis (Sorex veraepacis, Cryptotriton veraepacis)
- verheyeni (Mastomys verheyeni, Congosorex verheyeni)
- verrucipes (Eleutherodactylus verrucipes, Polyalthia verrucipes)
- verrucosum (Urbanodendron verrucosum, Piper verrucosum)
- verschureni (Praomys verschureni, Malacomys verschureni)
- verus (Pan troglodytes verus, Procolobus verus)
- vespertinus (Coccothraustes vespertinus, Falco vespertinus)
- vexans (Calophyllum vexans, Sorbus vexans)
- vexillarius (Macrodipteryx vexillarius, Paraxerus vexillarius)
- vicinior (Vireo vicinior, Scytalopus vicinior)
- victoriana (Geocrinia victoriana, Setobaudinia victoriana)
- vicugna (Vicugna vicugna, Vicugna vicugna vicugna)
- vidalii (Neolitsea vidalii, Sandoricum vidalii)
- vieillardii (Tristaniopsis vieillardii, Dacrycarpus vieillardii)
- viereckii (Mammillaria picta viereckii, Turbinicarpus viereckii)
- vigil (Buceros vigil, Rhinoplax vigil)
- vilarsi (Hyla vilarsi, Eleutherodactylus vilarsi)
- vilasboasi (Pipra vilasboasi, Lepidothrix vilasboasi)
- vilcabambae (Schizoeaca vilcabambae, Pamphilia vilcabambae)
- vinacea (Streptopelia vinacea, Amazona vinacea)
- vinosa (Hyla vinosa, Litoria vinosa)
- virginalis (Heliconia virginalis, Copadichromis virginalis)
- virginiae (Sminthopsis virginiae, Vermivora virginiae)
- virgo (Grus virgo, Rhinolophus virgo)
- viridanus (Picus viridanus, Chalcides viridanus)
- viride (Chrysophyllum viride, Windbalea viride)
- viridicata (Pyrrhura viridicata, Myiopagis viridicata)
- viridissima (Centrolenella viridissima, Aegithina viridissima)
- virolinensis (Magnolia virolinensis, Dendropsophus virolinensis)
- vitellina (Dendroica vitellina, Geocrinia vitellina)
- vitifolia (Gouania vitifolia, Actinidia vitifolia)
- vitulina (Phoca vitulina vitulina, Phoca vitulina)
- viviparum (Chthonerpeton viviparum, Nototrema viviparum)
- viviparus (Girardinichthys viviparus, Nectophrynoides viviparus)
- vociferus (Charadrius vociferus, Caprimulgus vociferus)
- vosseleri (Bubo vosseleri, Gonaxis vosseleri)
- vulcanicola (Ilex vulcanicola, Aniba vulcanicola)
- vulcanorum (Collocalia vulcanorum, Sylvisorex vulcanorum)
- vulpecula (Cranioleuca vulpecula, Trichosurus vulpecula)
- vulpina (Achatinella vulpina, Cranioleuca vulpina)
- vulturina (Pionopsitta vulturina, Gypopsitta vulturina)
- vulturnus (Eptesicus vulturnus, Vespadelus vulturnus)
- wadei (Ptychadena wadei, Cycas wadei)
- wagleriana (Podarcis wagleriana)
- wahlbergi (Epomophorus wahlbergi, Aquila wahlbergi)
- waialealae (Melicope waialealae, Astelia waialealae)
- waimeae (Clermontia waimeae, Hibiscus waimeae waimeae)
- wakei (Nototriton wakei, Cryptotriton wakei)
- waldeni (Actinodura waldeni, Aceros waldeni)
- walleri (Litocranius walleri, Onychognathus walleri)
- wallichi (Catreus wallichi, Cervus elaphus wallichi)
- wallichianum (Koilodepas wallichianum, Scleropyrum wallichianum)
- walteri (Otopharynx walteri, Kaloula walteri)
- watersi (Gerbillus watersi, Sarothrura watersi)
- watkinsi (Grallaria watkinsi, Incaspiza watkinsi)
- wattii (Vidumelon wattii, Rhododendron wattii)
- wattsi (Pipistrellus wattsi, Maxomys wattsi)
- webbi (Mantidactylus webbi, Eliurus webbi)
- weiskei (Parantica weiskei, Hieraaetus weiskei)
- westermanni (Ficedula westermanni, Elachistodon westermanni)
- weynsi (Cephalophus weynsi, Ploceus weynsi)
- whartoni (Ducula whartoni, Sphaerospira whartoni)
- wheeleri (Somatogyrus wheeleri, Arkansia wheeleri)
- whitakeri (Crocidura whitakeri, Cyclodina whitakeri)
- whitelyi (Caprimulgus whitelyi, Pipreola whitelyi)
- whitleyi (Myopterus whitleyi, Bothriembryon whitleyi)
- wibomii (Piper wibomii, Peperomia wibomii)
- wightiana (Hopea wightiana, Cryptocarya wightiana)
- wilhelmina (Paraleptomys wilhelmina, Antechinus wilhelmina)
- wilhelminae (Rhododendron wilhelminae, Charmosyna wilhelminae)
- williami (Cambarus williami, Metallura williami)
- winchelli (Todirhamphus winchelli, Todiramphus winchelli)
- wintoni (Cryptochloris wintoni, Laephotis wintoni)
- wisselensis (Litoria wisselensis, Oxyeleotris wisselensis)
- wolffsohni (Phyllotis wolffsohni, Lagidium wolffsohni)
- wolfii (Magnolia wolfii, Syzygium wolfii)
- wollebaeki (Zalophus californianus wollebaeki, Zalophus wollebaeki)
- wolterstorffi (Oreophryne wolterstorffi, Cynops wolterstorffi)
- woodburyana (Eugenia woodburyana, Machaonia woodburyana)
- woodfordii (Strix woodfordii, Livistona woodfordii)
- woodii (Encephalartos woodii, Hibiscadelphus woodii)
- woodworthi (Rana woodworthi, Limnonectes woodworthi)
- worcesteri (Turnix worcesteri, Philautus worcesteri)
- woytkowskii (Triplaris setosa woytkowskii, Psychotria woytkowskii, Clitoria woytkowskii)
- wrightiana (Manilkara jaimiqui wrightiana, Alasmidonta wrightiana)
- wrightorum (Batrachoseps wrightorum, Hyla wrightorum)
- wuelfinghoffii (Aechmea wuelfinghoffii, Vriesea wuelfinghoffii)
- wyatt-smithii (Durio wyatt-smithii, Hopea wyatt-smithii)
- wykehami (Lepidochrysops wykehami, Poecilmitis wykehami)
- xalapensis (Quercus xalapensis, Arbutus xalapensis)
- xanthogaster (Euphonia xanthogaster, Stiphrornis xanthogaster)
- xanthogastra (Carduelis xanthogastra, Tangara xanthogastra)
- xantholaemus (Pycnonotus xantholaemus, Serinus xantholaemus)
- xanthonotus (Indicator xanthonotus, Oriolus xanthonotus)
- xanthophrys (Crossleyia xanthophrys, Pseudonestor xanthophrys)
- xanthoschistos (Seicercus xanthoschistos, Phylloscopus xanthoschistos)
- xanthosternos (Cebus xanthosternos, Cebus apella xanthosternos)
- xenodactylus (Leptopelis xenodactylus, Arthroleptis xenodactylus)
- yaldeni (Leptopelis yaldeni, Desmomys yaldeni)
- yarkandensis (Lepus yarkandensis, Cervus elaphus yarkandensis)
- yarrellii (Carduelis yarrellii, Eulidia yarrellii)
- yateensis (Tristaniopsis yateensis, Libocedrus yateensis)
- yatesii (Ammonitella yatesii, Elaphoglossum yatesii)
- yayeyamensis (Leptogomphus yayeyamensis, Asiagomphus yayeyamensis)
- yei (Paa yei, Chaparana yei)
- yemenensis (Carduelis yemenensis, Aeshna yemenensis)
- yesoensis (Cervus nippon yesoensis, Myotis yesoensis)
- youngi (Sinployea youngi, Diaemus youngi)
- yuana (Habenaria yuana, Calanthe yuana)
- yustizi (Mannophryne yustizi, Eleutherodactylus yustizi)
- zaisanicus (Harpgoxenus zaisanicus, Harapgoxenus zaisanicus)
- zammaranoi (Uegitglanis zammaranoi, Cercopithecus albogularis zammaranoi)
- zanzibarensis (Vitex zanzibarensis, Rhinobatos zanzibarensis)
- zarudnyi (Meriones zarudnyi, Crocidura zarudnyi)
- zebratus (Mastacembelus zebratus, Galaxias zebratus)
- zeidleri (Fonscochlea zeidleri, Calamoecia zeidleri)
- zerda (Vulpes zerda, Fennecus zerda)
- zeregi (Pseudophoxinus zeregi, Phoxinellus zeregi)
- zeteki (Atelopus zeteki, Isthmohyla zeteki)
- zeylonensis (Ketupa zeylonensis, Paradoxurus zeylonensis)
- zonata (Spekia zonata, Hyla zonata)
- zosterops (Hemitriccus zosterops, Bernieria zosterops)
- zunigae (Melanomys zunigae, Oryzomys zunigae)