Dicrepidius corvinus
Guy Tobin Trailhead
Rio Rico, Santa Cruz County, Arizona
Coordinates: 31.468064, -110.991869
Elevation: 3,421 ft
July 15, 2017
Size: 12 mm
Under a covered picnic table
Attracted to mercury vapor and ultraviolet lights
Determined by Salvador Vitanza
Confirmed by Blaine Mathison