Athous villiger 
Athyma kasa 
Athyma speciosa 
Atlantarctia tigrina 
Atlantic ghost crab 
Atlantic Grasshopper 
Atlantic Horseshoe Crab 
Atlantis fritillary 
Atlantoraphidia maculicollis 
Atlas beetle 
Atlas Moth 
Atomosia puella 
Atopopus edmundsi 
Atractomorpha crenulata 
Atractomorpha psittacina 
Atractotomus mali 
Atrax christenseni 
Atrophaneura semperi 
Atta colombica 
Atta laevigata 
Atta sexdens 
Attacus lemairei 
Attacus lorquinii 
Attagenus posticalis