Atrax christenseni 
Atrophaneura semperi 
Atta colombica 
Atta laevigata 
Atta sexdens 
Attacus lemairei 
Attacus lorquinii 
Attagenus posticalis 
Attalus limbatus 
Attalus otiosus 
Atymna simplex 
Auca coctei 
Aufeius impressicollis 
August Thorn 
Aulacophora hilaris 
Aulacophora indica 
Aulacophora lewisii 
Aulagromyza cornigera 
Auletobius anceps 
Auriculoceryx transitiva 
Aurora Damsel 
Aurora flatbody moth 
Aussie Bronze Jumping Spider 
Aussie Netcaster