dipterous insect, two-winged insects, dipteran, dipteron - insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing --1is a kind ofinsect --1is a member of Diptera, order Diptera --1has parts: halter, haltere, balancer --1has particulars: