Noun | 1. | ![]() dipteran, dipteron, dipterous insect, two-winged insects - 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 Ceratitis capitata, medfly, Mediterranean fruit fly - small black-and-white fly that damages citrus and other fruits by implanting eggs that hatch inside the fruit drosophila, Drosophila melanogaster - small fruit fly used by Thomas Hunt Morgan in studying basic mechanisms of inheritance vinegar fly - flies whose larvae feed on pickles and imperfectly sealed preserves |