Agelenopsis naevia 
Agenioideus humilis 
Agenysa caedemadens 
Agestrata orichalca 
Aggregating anemone 
Aggtelek Blind Sideswimmer 
Agile frog 
Agile mangabey 
Agile tit-tyrant 
Agile wallaby 
Aglaoctenus lagotis 
Aglaopus pyrrhata 
Aglaopus sordida 
Agnidra fuscilinea 
Agnidra specularia 
Agnippe prunifoliella 
Agonopterix argillacea 
Agonopterix atrodorsella 
Agonopterix flavicomella 
Agonopterix pulvipennella 
Agonum marginatum 
Agreeable tiger moth 
Agrilus acutus 
Agrilus angustulus