formigenes

Built freely from New Latin formīcum (sc. acidum) "formic acid", itself derived from Latin formīca "ant", and Ancient Greek -γενής (-genḗs), originally meaning "born in a certain condition", here with its modern sense "producing" applied.

formigenēs (neuter formigenes or formigenēs); third-declension one-termination adjective (Greek-type)

1. (New Latin) that generates formic acid, especially by reducing oxalic acid

• Used exclusively as a taxonomic epithet and thus normally in the nominative singular; other inflections may be theoretical or rarely found.

Third-declension one-termination adjective (Greek-type).

¹It is unknown if Classical Latin preserved (or would have preserved) the shortness of the original Greek short ending.
²It is unknown whether adjectives of this type would use i-stem or consonant-stem endings in Classical Latin: the relevant forms are not attested. Depending on the word, either ending or both may be attested in New Latin.

• Oxalobacter formigenēs