Arrhythmus rugosipennis 
Arrow Crab 
Arrow Sphinx 
Arrow-shaped Orbweaver 
Arrowhead crab 
Arrowhead spider 
Arsenura armida 
Arsenura batesii 
Arsenura ciocolatina 
Arsipoda chrysis 
Arsipoda montana 
Artabrus erythrocephalus 
Artace cribraria 
Artaxa digramma 
Artaxa drucei 
Artaxa hannemanni 
Artaxa ormea 
Artaxa tanaoptera 
Artena Clearwing 
Artena inversa 
Arthromacra aenea 
Arthroschista tricoloralis 
Arthrosphaera magna 
Arthur’s Sunflower Moth