The term gall fly is also used to cover these species, although most are not true flies.

Craticulina is a genus of true flies in the family Sarcophagidae.

Insects with simply two wings (true flies) were brought together under the name Diptera.

Atelestidae is a family of true flies in the superfamily Empidoidea.

The Asilidae are a family in the order Diptera, the true flies.

Like many true flies, in the males, the eyes almost touch when viewed from above.

Scienlists say they're not true flies in the modern sense, but they look and act like flies.

Heleomyzidae is a small family of true flies in the insect order Diptera.

Hybotidae, the typical dance flies are a family of true flies.

This is unusual among insects; it most closely resembles the situation in the true flies, the Diptera.