Classification
Tree [regio]Heteroptera [subordo]
Gerridae [familia]
Eotrechinae [subfamilia]
Onychotrechus [genus]
Genus Onychotrechus Kirkaldy, 1903 contains the following taxa:
Onychotrechus esakii Andersen, 1980 [species]
Onychotrechus rhexenor Kirkaldy, 1903 [species]