Abacena accincta 
Abana horvathi 
Abantiades labyrinthicus 
Abbot's Bagworm Moth 
Abisara geza 
Abisara neavei 
Abracris flavolineata 
Abrosoma festinatum 
Abrosoma gibberum 
Abrupt Epiblema Moth 
Acacia blue 
Acacia shield bug 
Acacus sapuani 
Acadian hairstreak 
Acadian hermit crab 
Acalymma vinctum 
Acalypta parvula 
Acanthagrion lancea 
Acanthocephala terminalis 
Acanthocoris scabrator 
Acanthoplus discoidalis 
Aceria caulis 
Aceria cephalanthi 
Achaeus spinosus