Acorn Plum Gall Wasp 
Acraspis quercushirta 
Acromyrmex octospinosus 
African honey bee 
agepostemon tex 
Alfalfa Leafcutter Bee 
Allodapula variegata 
Amblyteles armatorius 
Amegilla zonata 
American Bumble Bee 
American Sand Wasp 
Ametastegia carpini 
Ammophila aberti 
Amphibolips cookii 
Amphibolips melanocera 
Ancistrocerus trifasciatus 
Andrena crocusella 
Andrena melittoides 
Andrena minutula 
Andrena pyropygia 
Andrena violae 
Andricus coronus 
Andricus foecundatrix 
Andricus quercuscalicis