| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Amegilla atrocincta (Lepeletier 1841) | 0 | 1 | 0 |
| Amerlanchier | 1 | 1 | 0 |
| Amerlanchier laevis | 0 | 1 | 0 |
| Ammobates Latreille 1809 | 1 | 3 | 0 |
| Ammobates muticus Spinola 1843 | 0 | 3 | 0 |
| Ammophila W. Kirby 1798 | 1 | 1 | 0 |
| Ammophila apicalis Guérin-Méneville 1835 | 0 | 1 | 0 |
| Amorpha | 1 | 1 | 0 |
| Amorpha fruticosa L. | 0 | 1 | 0 |
| Amphicarpa Michaelsen 1922 | 1 | 0 | 0 |
| Amphicarpa bracteata | 0 | 1 | 0 |
| Ancyla Lepeletier 1841 | 1 | 3 | 0 |
| Ancyla asiatica Friese 1922 | 0 | 3 | 0 |
| Ancyloscelis Latreille 1829 | 2 | 6 | 0 |
| Ancyloscelis apiformis (Fabricius 1793) | 0 | 3 | 0 |
