| Trichocephalus leporis Froelich, 1789 |
| Trichocephalus muris Schrank, 1788 |
| Trichocephalus suis Schrank, 1788 |
| Trichocephalus vulpes Froelich, 1789 |
| Trichosoma Rudolphi, 1819 |
| Trichosoma contortum Creplin, 1839 |
| Trichosoma gracile Bellingham, 1845 |
| Trichosoma putorii Rudolphi, 1819 |
| Trichosoma recurva Solger, 1877 |
| Trichosoma sonsinoi Parona, 1897 |
| Trichosoma speciosum Van Beneden, 1873 |
| Trichosoma spinulosum von Linstow, 1890 |
| Trichosomum Creplin, 1829 |
| Trichosomum tomentosum Dujardin, 1843 |
| Trichuridae Ransom, 1911 |
| Trichurinae Ransom, 1911 |
| Trichurini Ransom, 1911 |
| Trichurinii Ransom, 1911 |
| Trichuris Roederer, 1761 |
| Trichuris campanula (von Linstow, 1888) Urioste, 1923 |