Serrognathus titanus ssp. platymelus (中华扁锹甲). Male.
A giant stag beetle, this subspecies is common throughout China and is fairly easy to find on wet (but not heavily raining) days in summer in Changsha. They are lugubrious and slow: carefully plotting their path with their jointed feather-tipped antennae before moving ahead. The male is much larger than the female and has large antler-like jaws, with several small teeth along the edge and two big teeth on either side towards towards the back.
