Discoderus
Nogales, Santa Cruz County, Arizona
Coordinates: 31.335459, -110.937963
Elevation: 3,693 ft
January 2, 2018
Size: 10 mm
Determined by Dr. Peter W. Messer, who said: “Discoderus sp. based on imaged pronotum sufficiently rotund/convex AND protibiae sufficiently plurispinose along distal half of outer margins. I don’t wish to go beyond genus with images alone for this tricky group.”
Found over 20 of these beetles under cinder blocks, which were lying on the ground