Family Asilidae
10/27/2008 Upper Wolf Creek Trail, Hurricane Ridge, Olympic National Park, Washington
09/21/2008 Port Angeles, Washington
06/24/2008 Port Williams, Marlyn Nelson County Park, Sequim, Washington
07/08/2024 Mouth of the Elwha River, Port Angeles, WA
07/08/2024 Mouth of the Elwha River, Port Angeles, WA
06/14/2009 Hurricane Hill Area, Olympic National Park, Washington
08/16/2012 Sunrise Ridge Trail, Olympic National Park, Washington
08/16/2012 Obstruction Point Road, Near Cox Valley Trailhead, Olympic National Park, Washington
05/26/2017 Port Williams, Marlyn Nelson County Park, Sequim, Washington
07/18/2017 Sunrise Ridge Trail, Olympic National Park, Washington
06/14/2015 Obstruction Point Road, Near Cox Valley Trailhead, Olympic National Park, Washington
08/01/2015 Obstruction Point Area, Olympic National Park, Washington
05/13/2010 Railroad Bridge Park, Sequim, Washington
05/01/2014 Port Williams, Marlyn Nelson County Park, Sequim, Washington
09/16/2008 Blue Mountain/Deer Park, Olympic National Park, Washington
Robber flies (Family Asilidae) are predatory, attacking many insects, including some larger than themselves. The family contains about a thousand species in North America. Species vary in size, and some are bee mimics. Slides here are from sea level to more than a mile in altitude.
Robber flies typically overwinter as pupae, emerging in the spring. Some species prefer to lay eggs in old Wood-boring beetle holes (Family Buprestidae) in beach logs. The pupa wiggles partly out of the hole, then the adult splits the pupal case and emerges. (Slides 11, 12 and 13)
All identifications by way of bugguide.net.