Dolichopus brevicauda Van Duzee, 1921: 108

Potential infected species: Dolichopus xanthocnemus Loew, 1864b: 31 .

Dolichopus brevicauda was described from one male from Mount Washington, New Hampshire, USA. The face is wide and hypopygium is small and not much larger than the cerci. Dolichopus xanthocnemus, also collected at Mount Washington, is possibly the infected species. Dolichopus brevicauda differs from D. xanthocnemus by the small genitalia with darker cerci, lack of yellow cilia on hind femur, and lacking a knot-like enlargement on the costa.