| Abzaria Cameron, 1885 |
| Abzaria latipetiolaris Cameron, 1885 |
| Acaentinae Förster |
| Acanthostoma Kriechbaumer, 1895 |
| Acanthostroblia Roman, 1925 |
| Acerastes Cushman, 1929 |
| Acerastes animatus (Cresson, 1874) |
| Acerastes pertinax (Cresson, 1872) |
| Aclastoneura Kriechbaumer, 1896 |
| Acroblapticus Schmiedeknecht, 1911 |
| Acrocremnus Brèthes, 1926 |
| Acrotaphus Townes, 1960 |
| Acrotaphus mexicanus (Cameron, 1886) |
| Acrotaphus tibialis (Cameron, 1886) |
| Adelopimpla Schulz, 1906 |
| Adiastola Förster, 1869 |
| Aethalodes Kriechbaumer, 1890 |
| Aethris Schulz, 1906 |
| Agathilla Westwood, 1882 |
| Agathilla bohartorum Wahl, 1985 |