| Triacetelus emarginatus (Chevrolat, 1862) |
| Triacetelus sericatus Bates, 1892 |
| Triacetelus viridipennis Chemsak & Linsley, 1976 |
| Trichalphus Bates, 1881 |
| Trichalphus pilosus Bates, 1881 |
| Trichastylopsis Dillon, 1956 |
| Trichastylopsis albidus (LeConte, 1852) |
| Trichastylopsis hoguei Chemsak & Linsley, 1978 |
| Trichestola Breuning, 1950 |
| Trichestola mexicana Breuning, 1974 |
| Trichocanonura Dillon, 1956 |
| Trichocanonura linearis (Skinner, 1905) |
| Trichocnemis LeConte, 1851 |
| Trichocnemis spiculatus LeConte, 1851 |
| Trichocnemis spiculatus subsp. neomexicanus (Casey, 1890) |
| Trichocnemis spiculatus subsp. spiculatus LeConte, 1851 |
| Trichoderes Chevrolat, 1843 |
| Trichoderes pini Chevrolat, 1843 |
| Trichoderes rugosus Bates, 1884 |
| Trichoparmenonta Breuning, 1943 |