Chalcosoma causasus is one of large size species of Dynastinae (Scarabaeidae family) beetles that found from Vietnam. The species is closed to Chalcosoma atlas and very similar in shape but there is a small spine (horn) on the middle large horn from the head of beelte.
Same to other beetles of Dynastinae, Chalcosoma causasus has also large form and small form in males, they have been found from Dak Nong Province, South Center of Vietnam. The species is more rarer than its related species Chalcosoma atlas.
Large form of male of Chalcosoma causasus, in dorsal view (above) and oblique view (below)
Large form of male of Chalcosoma causasus, view front view.
Small form of male of Chalcosoma causasus, in dorsal view (above) and oblique view (below)
