Identification of beetles (Coleoptera)

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22.10.2016 1:19, Barnaba

Please help me identify a rhinoceros from Borneo. Length about 28mm

So this is definitely Dichodontus, a minor male. But from almost unpunctured species. I would venture to suggest D. coronatum (especially if I don't see clearly dotted striae along the mitral suture), or M. B. D. grandis. Not only the shape of the PRSP, but also its outline and sculpture change significantly in f. Major's work. I advise you to wipe the beetle and rummage through the photos on the Internet, both types are often on sale (m. b. not from Sarawak), there is something minor, especially among the so-called "females" (just in case, they do not have horns, at most a bump). Although the definitions there should be treated carefully.

22.10.2016 7:48, IKamskov

So this is definitely Dichodontus, a minor male. But from almost unpunctured species. I would venture to suggest D. coronatum (especially if I don't see clearly dotted striae along the mitral suture), or M. B. D. grandis. Not only the shape of the PRSP, but also its outline and sculpture change significantly in f. Major's work. I advise you to wipe the beetle and rummage through the photos on the Internet, both types are often on sale (m. b. not from Sarawak), there is something minor, especially among the so-called "females" (just in case, they do not have horns, at most a bump). Although the definitions there should be treated carefully.

Thanks, of the two options, it looks more like D. coronatus. Grandis ' ndkrs are quite
smooth. Will be in the collection under question