| Saemundssonia montereyi (Kellogg, 1896) |
| Saemundssonia platygaster (Denny, 1842) |
| Saemundssonia uppalensis (Rudow, 1870) |
| Strigiphilus Mjöberg, 1910 |
| Strigiphilus cursor (Burmeister, 1838) |
| Strigiphilus microgenitalis Carriker, 1966 |
| Strigiphilus speotyti (Osborn, 1896) |
| Strigiphilus virgo (Giebel, 1874) |
| Strongylocotes Taschenberg, 1882 |
| Strongylocotes cordiceps (Carriker, 1936) |
| Strongylocotes fimbriatus Clay, 1937 |
| Strongylocotes subconiceps Carriker, 1936 |
| Sturnidoecus Eichler, 1914 |
| Sturnidoecus mexicanus Carriker, 1956 |
| Trabeculus Rudow, 1866 |
| Trabeculus mirabilis (Kellogg, 1896) |
| Traihoriella Ansari, 1947 |
| Traihoriella laticeps (Piaget, 1888) |
| Trogoninirmus Eichler, 1944 |
| Trogoninirmus hastiformis (Carriker, 1903) |