| Corthylus sentosus Wood, 1986 |
| Corthylus sentus Wood, 1974 |
| Corthylus spinifer Schwarz, 1891 |
| Corthylus spinosus Wood, 1974 |
| Corthylus suturifer Schedl, 1963 |
| Corthylus trucis Wood, 1974 |
| Corthylus uniseptis Schedl, 1961 |
| Corthylus villus Bright, 1972 |
| Cosmobaris Casey, 1920 |
| Cosmobaris americana Casey, 1920 |
| Cossoninae Schönherr, 1825 |
| Cossonini Schönherr, 1825 |
| Cossonus Clairville, 1798 |
| Cossonus affaber Boheman, 1845 |
| Cossonus aterrimus Champion, 1909 |
| Cossonus bicolor Champion, 1909 |
| Cossonus bifoveatus Champion, 1909 |
| Cossonus bigeminatus Champion, 1909 |
| Cossonus bulbirostris Perty, 1832 |
| Cossonus canaliculatus (Fabricius, 1792) |