| Catolaccus aeneoviridis (Girault, 1911) |
| Catolaccus cerealellae (Ashmead, 1902) |
| Catolaccus grandis Burks, 1954 |
| Catolaccus hunteri Crawford, 1908 |
| Catolaccus incertus Cresson, 1864 |
| Catolaccus meteori (Gahan, 1913) |
| Catolaccus tepicensis Ashmead, 1895 |
| Cecidostiba Thomson |
| Cecidostiba dendroctoni Ashmead, 1894 |
| Ceinae Boucek, 1961 |
| Cerocephala Westwood, 1832 |
| Cerocephala aquila (Girault, 1920) |
| Cerocephala tostini (Girault, 1932) |
| Cerocephalinae Gahan, 1946 |
| Chalcedectus Walker, 1852 |
| Chalcedectus caelatus Grissell, 1991 |
| Chalcedectus hyalinipennis (Ashmead, 1896) |
| Chalcedectus maculipennis (Ashmead, 1896) |
| Choetospila Westwood, 1874 |
| Cleonyminae Walker, 1837 |