| Rhoptrocentrus Marshall, 1897 |
| Rhoptrocentrus piceus Marshall, 1897 |
| Rhyssosigalphus Cameron, 1904 |
| Rhytidogaster Agassiz, 1846 |
| Rogadinae Shaw, 1998 |
| Rogadinaspis Boucek, 1956 |
| Rogadini |
| Rogas Nees, 1818 |
| Rogas burrus Cresson, 1869 |
| Rogas harrisinae Ashmead, 1889 |
| Rogas laphygmae Viereck, 1912 |
| Rogas mexicanus Masner, 1976 |
| Rogas pilosus Cresson, 1872 |
| Rogas vaughani Muesebeck, 1960 |
| Russellella Muesebeck & Walkley, 1951 |
| Russellia Muesebeck, 1950 |
| Russellia prosopidis Muesebeck, 1950 |
| Saprotichus Holmgren, 1868 |
| Schizoides Wesmael, 1838 |
| Schoenlandella Cameron, 1904 |