| Thelaira americana Brooks, 1945 |
| Thelairini Lioy, 1864 |
| Thelairodes Wulp, 1891 |
| Thelairodes pallidus Wulp, 1891 |
| Thelairodes spinosus (Bigot, 1889) |
| Thelairodes vittigerus (Bigot, 1889) |
| Thelairodoria Townsend, 1927 |
| Thelairodoria exilis (Wulp, 1890) |
| Thematheca Reinhard, 1961 |
| Theresiini Townsend, 1919 |
| Thereuops Brauer & Bergenstamm, 1891 |
| Tinalydella Townsend, 1927 |
| Tinanemorilla Townsend, 1927 |
| Topomeigenia Townsend, 1919 |
| Topomeigenia maturina Townsend, 1919 |
| Trafoia Brauer & Bergenstamm, 1893 |
| Trafoia rufipalpis (Bigot, 1889) |
| Trafoia setulosa (Wulp, 1890) |
| Trepophrys Townsend, 1908 |
| Trepophrys cinerea Townsend, 1908 |