| Opius (Euopius) maximiliani (Fischer, 1969) |
| Opius (Euopius) rugificus (Fischer, 1969) |
| Opius (Rhogadopsis) Brèthes, 1913 |
| Opius anastrephae Viereck, 1913 |
| Opius bellus Gahan, 1930 |
| Opius cereus Gahan, 1919 |
| Opius chillcotti Fisher, 1969 |
| Opius cordobensis Fisher, 1963 |
| Opius cortesanus Fisher, 1968 |
| Opius eupatorii Fischer, 1966 |
| Opius foveolatus Ashmead, 1889 |
| Opius galomirus Fisher, 1968 |
| Opius hermosanus Fisher, 1964 |
| Opius impressiformis Fisher, 1964 |
| Opius lemonensis Fischer, 1964 |
| Opius longifoveatus Fisher, 1964 |
| Opius longissimicauda Fisher, 1962 |
| Opius malivorellae Fischer, 1964 |
| Opius mandibularis Gahan, 1915 |
| Opius metatensis Fisher, 1964 |