dip·ter·an 
(dĭptər-ən)
(dĭptər-ən)n.
Any of numerous insects of the order Diptera, characterized by a single pair of membranous wings and a pair of club-shaped balancing organs, and including the housefly and the mosquitoes.
[From New Latin Diptera, order name, from Greek dipteros, having two wings : di-, two; see DI-1 + pteron, wing; see -PTER.]
dipter·an adj.