| Chordonota fuscipennis Bellardi, 1862 |
| Chrysochlorina James, 1939 |
| Chrysochlorina femoralis (Curran, 1929) |
| Chrysochlorina flavescens (James, 1937) |
| Chrysochlorina pulchra (Williston, 1900) |
| Chrysochlorina purpurea (Walker, 1860) |
| Chrysochlorina vespertilio Fabricius, 1805 |
| Chrysochlorinae Kertész, 1908 |
| Clitellariinae Brauer, 1882 |
| Coenosargus Enderlein, 1914 |
| Compsosoma Brauer, 1882 |
| Cosmariomyia Kertész, 1914 |
| Cosmariomyia pallidipennis (Williston, 1901) |
| Cynipimorpha Brauer, 1882 |
| Cynipimorpha bilimeki Brauer, 1882 |
| Cynipimorpha opuntia (James, 1966) |
| Cyphomyia Wiedemann, 1819 |
| Cyphomyia albitarsis (Fabricius, 1805) |
| Cyphomyia anchialus (Walker, 1849) |
| Cyphomyia auriflamma Wiedemann, 1819 |