| Rhopalum Stephens, 1829 |
| Rhopalum spinigerus Cameron, 1904 |
| Sagenista R. Bohart, 1967 |
| Sagenista pilosa R. Bohart, 2000 |
| Schistosphex Arnold, 1922 |
| Scotomphales Vachal, 1900 |
| Sericophorini Dalla Torre, 1897 |
| Silaon Piccioli, 1869 |
| Silaon mexicanus Rohwer, 1911 |
| Simblephilus Jurine, 1807 |
| Soleniina Bradley, 1926 |
| Solenius Lepeletier, 1835 |
| Solenius conspiciendus Mickel, 1918 |
| Solierella Spinola, 1851 |
| Solierella jaliscana R. Bohart, 1991 |
| Solierella lateris R. Bohart, 1991 |
| Solierella loxa R. Bohart, 1991 |
| Solierella mexicanus (Rohwer, 1911) |
| Solierella sonorana R. Bohart, 1991 |
| Solierella wasbauerorum R. Bohart, 1991 |