Xenox tigrinus (Diptera: Orthorrhapha: Asiloidea: Bombyliidae: Anthracinae: Anthracini). Burke, Fairfax County, VA 04 September 2012
I believe this is the species.
18 mm body length. Phragmites meadow.
A BIG fly, maybe 3/4 inch wide. Seen sitting on lamppost just inside entrance to Potter Park Zoo, Lansing, MI.
Checked Bugguide.net and the wing, abdominal and thoracic patterns look to fit Xenox tigrinus.
sitting next to carpenter bee nest in wooden shelter
Seen these for years landing and siting on the garage. Always thought they were sunning themselves, but perhaps there was more to it. This garage has always been infested with carpenter bees as well.