Asphaera albomarginata 
Asphaera boliviensis 
Asphondylia rudbeckiaeconspicua 
Aspicela bourcieri 
Aspicela scutata 
Aspidapion aeneum 
Aspidimorpha sanctaecrucis 
Asprenas impennis 
Assembly Moth 
Astacoides crosnieri 
Astacus astacus 
Astata boops 
Astata unicolor 
Astathes perplexa 
Aster Bee Fly 
Aster Eucosma Moth 
Aster Treehopper 
Aster-head Eucosma Moth 
Asteromyia carbonifera 
Asteromyia euthamiae 
Asterope degandii 
Astinus intermedius 
Astraeus crassus 
Astraeus pygmaeus