Aphilothrix, [531]

Apocrita, [519]

Apodeme, [103]

Apophysis, [103], [520]

Appendages, [91], [188], [189], [190]

Aptera, [172], [180]-[189]

Apterous Insects, [205], [216], [217], [220], [234], [235], [252], [261], [262], [264], [269], [272], [274], [277], [299], [302], [303], [307], [321], [322], [323], [324], [325], [326], [329], [518], [556], [561]

—see also Wingless Insects

Apterygogenea, [175], [196]

Aquatic Acridiidae, [301], [303];