| Stibasoma Schiner, 1867 |
| Stibasoma (Stibasoma) Schiner, 1867 |
| Stibasoma (Stibasoma) bifenestrata Philip, 1966 |
| Stibasoma (Stibasoma) chionostigma (Osten-Sacken, 1886) |
| Stibasoma (Stibasoma) dives (Walker, 1848) |
| Stibasoma (Stibasoma) euglossa Lutz, 1915 |
| Stibasoma (Stibasoma) flavistigma Hine, 1912 |
| Stibasoma (Stibasoma) flaviventre (Macquart, 1848) |
| Stibasoma (Stibasoma) pachycephalum Bigot, 1892 |
| Stibasoma (Stibasoma) stilbium Fairchild, 1953 |
| Stibasoma (Stibasoma) sulfurotaeniata Kröber, 1931 |
| Stictotabanus Lutz, 1914 |
| Stonemyia Brennan, 1935 |
| Stonemyia californica (Bigot, 1892) |
| Straba Enderlein, 1923 |
| Stypommisa Enderlein, 1923 |
| Stypommisa apaches Philip, 1977 |
| Stypommisa captiroptera (Kröber, 1930) |
| Stypommisa u-nigrum Philip, 1977 |
| Stypommisa xenium Fairchild, 1947 |