Appleleaf-curling Moth 
Apriona brunneomarginata 
Apritcia jovialis 
Apsarasa radians 
Aptenopedes aptera 
Aquaphilic grasshopper 
Aquita tactalis 
Arabesque orbweaver 
Arabian burnet moth 
Arabian fat-tailed scorpion 
Arachnocampa richardsae 
Arachnospila trivialis 
Arachnothelphusa merarapensis 
Aradus betulae 
Aradus funestus 
Araeopteron rufescens 
Aragua bistonaria 
Araneus ginninderranus 
Araneus nox 
Araneus pallidus 
Araneus pentagrammicus 
Araneus psittacinus 
Arboreal Bicolored Ant 
Arborvitae Leafminer