Avitta bracteola 
Avitta fasciosa 
Axarus festivus 
Ayres' Stone Grasshopper 
Ayuthia spectabile 
Azalea Caterpillar Moth 
Azalea leaf miner 
Azalea Plant Bug 
Azalea sphinx 
Azochis curvilinearis 
Azochis phillips 
Azorian Large White 
Aztec Spur-throat 
Azure bluet 
Azure Damselfly 
Azure darner 
Azure hawker 
Baby fivering 
Backobourkia brouni 
Backobourkia brounii 
Bacotoma camillusalis 
Bactrocera albistrigata 
Bactrocera umbrosa 
Bacuita excentrica