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Bess Beetle


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.

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1 Comment

MrsPbio 8 years ago

We call these "Bess bugs" , they are so cute and slow and completely harmless ! I adore Bess bugs. They eat dead wood like a stump or old rotting logs.

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Spotted on Nov 13, 2012
Submitted on Dec 13, 2012

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