Found under a lighted wall. I believe only males have horns. (Corrections welcome, of course.) Captured and posed. See guide page for identification references. Bolboceras liebecki
, since that is the species mentioned for the Piedmont of South Carolina in Harpootlian's Scarab Beetles of South Carolina (1)
. See comments for confirmation--thanks Phil!
This image is currently used on the title page for family Bolboceratidae
at the Tree of Life