Arizona Poppy 
Arizona Tan Mantis 
Arizona Tree Frog 
Arkys transversus 
Armadillidium granulatum 
Armed anemone 
Armed Spiny Ant 
Armenian gull 
Armeria macrophylla 
Armeria pseudoarmeria 
Armeria welwitschii 
Armigeres subalbatus 
Armillaria gemina 
Armillaria nabsnona 
Armillaria sinapina 
Armillaria solidipes 
Armina magna 
Armina neapolitana 
Armored Pricklenape 
Armored Stink Beetle 
Army cutworm 
Armyworm Parasitoid Wasp 
Arna bipunctapex 
Arnebia coerulea