Haematobia irritans irritans
Green Valley , Pima County, Arizona
Coordinates: 31.787949, -111.044000
January 20, 2019
Size: 5.5 mm
This fly bit a coworker in the arm who, after squashing it, asked help to identify the offending critter
Determined by Salvador Vitanza
Confirmed by Norm Woodley based on the two images of the crushed fly (not the wing photo)