| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Ablator | 1 | 0 | 0 |
| Ablator minutus | 0 | 0 | 0 |
| Ablattaria | 1 | 0 | 0 |
| Ablattaria laevigata | 0 | 0 | 0 |
| Abraxas | 1 | 0 | 0 |
| Abraxas sylvata Scopoli 1763 (clouded magpie) | 0 | 0 | 1 |
| Absconditella (absconditella lichen) | 1 | 0 | 0 |
| Absconditella delutula (Nyl.) Coppins & H. Kilias | 0 | 0 | 0 |
| Acanthis Borkhausen 1797 | 1 | 0 | 0 |
| Acanthis flammea (Linnaeus 1758) (Common Redpoll) | 0 | 0 | 1 |
| Acanthocladia Ardissone 1886 | 2 | 0 | 0 |
| Acanthocladia anceps | 0 | 0 | 1 |
| Acanthocladia laxa | 0 | 0 | 1 |
| Acanthocladiidae | 1 | 0 | 0 |
| Acanthodiacrodium | 1 | 0 | 0 |
