| Microdus nigritulus Szépligeti, 1902 |
| Microdus nigrotrochantericus Viereck, 1905 |
| Microdus pallens Townes, 1939 |
| Microdus pygmaeus Cresson, 1872 |
| Microdus pylas Spinola |
| Microdus sacchari Myers, 1931 |
| Microdus simulatrix Cameron, 1887 |
| Microdus stigmaterus Cresson, 1865 |
| Microdus texanus Howard, 1898 |
| Microdus thoracicus Ashmead, 1896 |
| Microdus trochanteratus Cameron, 1905 |
| Microdus wichitaensis Viereck, 1905 |
| Microgaster Latreille, 1804 |
| Microgaster (Hygroplitis) Thomson, 1895 |
| Microgaster (Lissogaster) Bengtsson, 1926 |
| Microgaster americanus (Brues, 1908) |
| Microgaster bisstigmata Say, 1836 |
| Microgaster croceipes Cresson, 1874 |
| Microgaster ecdytolophae Muesebeck, 1922 |
| Microgaster flaviventris Cresson, 1865 |