Robber flies eat biting flies and other flying insects. This species likes bees and dragonflies as well as biting flies. During the day, they hang from branches or objects near the ground, waiting to ambush passing prey. They chase them in flight, overtake them and grab them with their legs. Once captured, the robber fly will stop at a branch or leaf and use its stiff mouth to pierce the body of its victim and then suck out the victim's insides.
They make a loud whirring noise as they fly because they beat their wings so quickly.
Robber flies come in a variety of species. This one has color variations and different stripe marks depending on the individual.
Common name: Robber Fly (Diogmites)
Scientific Name: Diogmites sp.
Adult Size (Length): 18mm to 40mm (0.71in to 1.57in) [ COMPARE ]
Identifying Colors: brown; red; green; black
General Description: fast fly, buzz, metallic, shiny
North American Reach (Though Not Limited To*): Maine, New Hampshire, Vermont, New York, New Jersey, Maryland, Massachusetts, Rhode Island, Connecticut, Delaware, Pennsylvania, West Virginia, Virginia, North Carolina, South Carolina, Georgia, Kentucky, Tennessee, Ohio, Michigan, Illinois, Indiana, Minnesota, Wisconsin, Missouri, Arkansas, Mississippi, Louisiana, Alabama, Texas, Oklahoma, Kansas, Nebraska, Mexico
* Insects are not governed by lines on a map and therefore may appear in areas/regions/states beyond those listed above.Text ©2005-2014 www.InsectIdentification.org • All Rights Reserved • No Reproduction Permitted