| Cotesia hyphantriae (Riley, 1887) |
| Cotesia kraussi (Muesebeck, 1958) |
| Cotesia marginiventris (Cresson, 1865) |
| Cotesia medicaginis (Muesebeck, 1947) |
| Cotesia theclae (Riley, 1881) |
| Craspedobothrus Enderlein, 1920 |
| Crassomicrodus Ashmead, 1900 |
| Crassomicrodus apicipennis Muesebeck, 1927 |
| Crassomicrodus fenestratus Viereck, 1913 |
| Crassomicrodus fulvescens Cresson, 1865 |
| Crassomicrodus medius Cresson, 1865 |
| Crassomicrodus nigricaudus Viereck, 1905 |
| Crassomicrodus nigrithorax Muesebeck, 1927 |
| Crassomicrodus pallens Townes, 1939 |
| Cremnops Förster, 1862 |
| Cremnops crassifemur Muesebeck, 1927 |
| Cremnops hematodes Brullé, 1846 |
| Cremnops kelloggii Morrison, 1917 |
| Cremnops melanoptera Ashmead, 1894 |
| Cremnops nigrosternum Morrison, 1917 |