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A dirty Bess Beetle (Passalidae) on a wooden railing. Black exoskeleton with orange hairs at it's sides. Have a deformed forehead which is typical of this species. About 25mm in length. A mite parasite is also seen crawling on the beetle in these photographs. The video recorded it's threatening call to show that it is disturbed.
Live in decaying logs in Maliau Basin, Tawau, Sabah.
So far 2 species are scientifically recorded from Maliau Basin - Leptaulax bicolor and Aceraius wallacei. >>>Map accuracy : 5km diameter.