| Trichostrongylus axei (Cobbold, 1879) Railliet & Henry, 1909 |
| Trichostrongylus calcaratus Ransom, 1912 |
| Trichostrongylus chiapensis Caballero, 1958 |
| Vexillata Travassos, 1937 |
| Vexillata armandae Gardner, Fong, Al Banna & Raymond, 1994 |
| Vexillata convoluta (Caballero & Cerecero, 1943) Durette-Desset, 1972 |
| Vexillata dessetae Denke, 1977 |
| Vexillata legallae Denke, 1977 |
| Vexillata liomyos Falcón-Ordaz, Gardner & Pérez-Ponce de León, 2001 |
| Vexillata vexillata (Hall, 1916) Durette-Desset, 1971 |
| Viannaia Travassos, 1914 |
| Viannaia bursobscura Dickmans, 1931 |
| Viannaia didelphis (Travassos, 1914) Durette-Desset, 1968 |
| Viannaia viannai Travassos, 1914 |
| Viannaiini Neveu-Lemaire, 1944 |
| Viannainii Neveu-Lemaire, 1944 |
| Websternema Vaucher & Durette-Desset, 1986 |
| Websternema parnelli (Webster, 1971) Vaucher & Durette-Desset, 1986 |