Arcitalitrus dorrieni 
Arcocatus longiceps 
Arcte modesta 
Arctic bluet 
Arctic Fritillary or Purplish Fritillary 
Arctornis micacea 
Arctornis rutila 
Arctornis tortricoides 
Arcyptera fusca 
Ardonea tenebrosa 
Ardys Crescent 
Areas galactina 
Arenocoris waltlii 
Areolate Woodwasp 
Aretaon asperimus 
Arethusana 
Arge moth 
Arge similis 
Argentine ant 
Argia limitata 
Argiocnemis ensifera 
Argiope aetheroides 
Argiope intricata 
Argiope pentagona