| Coronocyclus Hartwich, 1986 |
| Coronocyclus coronatus (Looss, 1900) Hartwich, 1986 |
| Coronocyclus labiatus (Looss, 1902) Hartwich, 1986 |
| Coronocyclus labratus (Looss, 1900) Hartwich, 1986 |
| Cyathostominae Nicoll, 1927 |
| Cyathostominea Molin, 1861 |
| Cyathostomum Molin, 1861 |
| Cyathostomum bicoronatum Looss, 1900 |
| Cyathostomum coronatum Looss, 1900 |
| Cyathostomum labratum Looss, 1900 |
| Cyathostomum poculatum Looss, 1900 |
| Cyathostomum tetracanthum (Mehlis, 1831) Molin, 1861 |
| Cylichnostomum Looss, 1902 |
| Cylichnostomum goldi Boulenger, 1917 |
| Cylichnostomum insigne Boulenger, 1917 |
| Cylichnostomum labiatus Looss, 1902 |
| Cylicocyclus Ihle, 1922 |
| Cylicocyclus insigne (Boulenger, 1917) Chaves, 1930 |
| Cylicocyclus leptostomum (Kotlán, 1920) Chaves, 1930 |
| Cylicodontophorus Ihle, 1922 |