Bibio sp.
This is a female march fly. Members of this family of flies are known for their extremely long matings. Some members of the family are called lovebugs. The larvae are generally herbivorous and feed on decaying plant matter. Most adult stages of march flies have relatively short lifespans. There are more than 650 known species within the Bibionidae family.
Order: Diptera
Family: Bibionidae
Species: probably Bibio sp.
Photograph: © 2009 RKD Peterson
Date of Photograph: 1 June 2009
Location: Montana, Gallatin Co. (45o22'33" N 111o08'11" W)