Aerial: living in the air; applied to flying insects.
Aeriductus: a spiracle: the tracheal, gill-like structures of aquatic larvae: more specifically the tail-like extensions of rat-tailed maggots and some aquatic Hemiptera.
Aeroscepsin: an indefinite sense of perception supposed to be located in the antenna.
Aeroscepsy: The faculty of observing atmospheric changes: supposed to be located in the antenna.
Aerostats: a pair of large air sacs at base of abdomen in Diptera.
Aeruginose -us: the color of verdigris [blue green].
Aestival: occurring in summer.
Aestivation: applied to summer dormancy.
Afferent: carrying inwardly or toward the centre.
Affinis: related to: similar in structure or development.