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Xaurus
Member Rosenbergia
Germany
1924 Posts |
 Posted - 18/08/2015 : 23:40:24
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Anybody knows at least the genus of this Brentidae beetle (from Vietnam) with really strange hind legs ! |
Edited by - Xaurus on 19/08/2015 23:45:35 |
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Pierre
Member Rosenbergia
Switzerland
1755 Posts |
Posted - 19/08/2015 : 09:55:51
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Genus Calodromus Guérin-Méneville, 1832.
Sforzi & Bartolozzi (2004) listed 12 taxons belonging to this genus, all having very particular hind legs with a double articulation on knees. The entire body shows a highly developed adaptation to their environment. It would be interesting to know more about their biology.
Calodromus mellyi Guérin-Méneville & Gory, 1832 is cited from Laos and Vietnam.
Another possibility could eventually be C. simplex Heller, 1910 (Sumatra, Vietnam), I don't know this species but I think mellyi is the right match, I have specimen from Thailand which are exactly like yours. |
Edited by - Pierre on 19/08/2015 10:01:34 |
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Xaurus
Member Rosenbergia
Germany
1924 Posts |
Posted - 20/08/2015 : 00:50:11
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Great Pierre, thanks a lot !
I have found such creatures as well as in Vietnam and in W-Papua too, but I know nothing about the biology. Maybe the strange hind legs have a function for the mating behavior.
Most of the spms I got by light or knocked from dead wood. |
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Xavier
Scientific Collaborator
France
12213 Posts |
Posted - 20/08/2015 : 08:21:31
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122.68 KB
Here one from Laos. I have the same ID. |
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Pierre
Member Rosenbergia
Switzerland
1755 Posts |
Posted - 20/08/2015 : 10:19:09
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But this one must be different species. The hind legs are different; much larger, knees articulation and hairy tufts different, and wearing only a small knob, not this distinct hook, on their dorsal side.
Brentidae are a difficult chapter (such as most Curculionoidae)... but so interesting!
Workers on this group are rare and papers impossible to obtain. Brentidae are often rather common and easy to collect as many of them are attracted to light. On the other hand, the total lack of interest by entomologists leaves them in a obscure corner. |
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Andre
Member Rosenbergia
Germany
1694 Posts |
Posted - 25/08/2015 : 11:26:31
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Xaurus' Ex. is a male, Xavier's is a female.
I have both from the same location as Xaurus, catching by light trap. |
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Vietnam: Calodromus mellyi? (Brentidae)
