Araneus nox 
Araneus pallidus 
Araneus pentagrammicus 
Araneus psittacinus 
Argiope aetheroides 
Argiope intricata 
Argiope pentagona 
Argiope perforata 
Argiope ranomafanensis 
Argiope reinwardti 
Argiope savignyi 
Argus persicus 
Argyrodes miniaceus 
Ariamnes cylindrogaster 
Arizona bark scorpion 
Arkys transversus 
Arrow-shaped Orbweaver 
Arrowhead spider 
Artabrus erythrocephalus 
Artoria flavimana 
Artoriopsis expolita 
Asian blue forest scorpion 
Asian Hermit Spider 
Asian Smokey Earth-tiger Tarantula