About Didea fasciata Macquart, 1834
Didea fasciata was first described by Macquart in 1834. Adults of this species have a wing length between 8.25 and 11 mm. Their halteres have a yellow knob, and the face is yellow, with at most a dark tip on the central knob. Vockeroth illustrated the male genitalia of Didea fasciata in 1969, and Heiss described and illustrated the species' larva in 1938. This species is distributed across the Palaearctic, Nearctic, and Oriental regions. In the Palaearctic, it ranges from Fennoscandia south to Spain, Italy, and Greece, and from Ireland eastwards through Russia and the Russian Far East to the Pacific coast. In the Nearctic (North America), it occurs from British Columbia south to New Mexico and east to New York. In the Oriental region, it can be found as far south as North India and Formosa.
