| Scientific Name | Author | English Name |
|---|---|---|
| Cheironchus papillosus | (Allgen, 1959) | |
| Cheironchus vorax | Cobb, 1917 | |
| Demonema rapax | Cobb, 1894 | |
| Kosswigonema acanthum | (Gerlach, 1957) | |
| Synonchiella denticulata | Cobb, 1933 | |
| Synonchiella hopperi | Ott, 1972 | |
| Synonchiella spiculora | Murphy, 1962 | |
| Synonchiella truncata | Cobb, 1933 | |
| Synonchium depressum | Gerlach, 1954 | |
| Synonchium obtusum | Cobb, 1920 | |
| Synonchium pacificum | Yeates, 1967 | |
| Trogolaimus uniformis | Cobb, 1920 |