| Thyreocephalus puncticeps Sharp, 1885 |
| Thyreocephalus rufipennis Sharp, 1885 |
| Thyreocephalus scutellaris (Sharp, 1885) |
| Thyreocephalus unicolor Sharp, 1885 |
| Thyreoxenus Mann, 1923 |
| Thyreoxenus mexicanus Seevers, 1960 |
| Tinotus Sharp, 1883 |
| Tinotus flavescens Sharp, 1883 |
| Tinotus refusus Hanley, 2002 |
| Tomoplectus Raffray, 1898 |
| Tomoplectus cordicollis Raffray, 1898 |
| Tomoplectus mexicanus Park, 1952 |
| Torrentomus Bierig, 1934 |
| Toxidium LeConte, 1860 |
| Toxidium gammaroides LeConte, 1860 |
| Toxidium punctatum Matthews, 1888 |
| Trachopeplus Mann, 1923 |
| Trachopeplus carlislei Kistner & Jacobson, 1976 |
| Triangusella Park, 1952 |
| Triangusella acuta Park, 1952 |