Araneus pentagrammicus 
Araneus psittacinus 
Arboreal Bicolored Ant 
Arborvitae Leafminer 
Arch Duke Butterfly 
Archaeoattacus edwardsii 
Archaeoattacus malayanus 
Archaeoses polygrapha 
Archaereta dorsivittella 
Archarius crux 
Archarius pyrrhoceras 
Archarius salicivorus 
Archasia belfragei 
Archduke 
Archduke Butterfly 
Arched hooktip 
Arched marble 
Archichauliodes guttiferus 
Archips rosana 
Archonias sisamnus 
Arcigera flower moth 
Arcitalitrus dorrieni 
Arcocatus longiceps 
Arcte modesta