Asilid Sp.

This is a robber fly in the family Asilidae. The adult feeds on other flies, bees, and wasps. The larvae can have varying diets depending on their current larval stage. It can take 1-3 years for members of the Asilidae family to complete their life cycles. These flies are often found in open, sunny, and dry habitats with patches of vegetation. 

Order: Diptera
Family: Asilidae

Photograph: © 2009 RKD Peterson
Date of Photograph: 29 August 2009
Location: Yellowstone National Park (44^o54'48" N 110^o43'57" W)