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BillTyson
Member Rosenbergia
USA
1200 Posts |
 Posted - 13/05/2016 : 01:05:13
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51.96 KB
Yen Bai, May, 23 mm
 
Here are two more views. One shows the crests on the elytra. |
Edited by - Xavier on 02/06/2016 07:57:33 |
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Capitaine
Scientific Collaborator
France
1850 Posts |
Posted - 13/05/2016 : 10:46:49
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| Lack of contrast, but yes: M. bimaculatus (Gahan,1888) |
Claude |
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Xavier
Scientific Collaborator
France
12347 Posts |
Posted - 13/05/2016 : 17:52:38
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Same species here ?
There are many pictures of M.bimaculatus on the forum, but with shorter lateral spines on pronotum, and less sharp; base of elytra are less granular. I am not sure that it's the same species. |
Edited by - Xavier on 13/05/2016 19:09:33 |
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BillTyson
Member Rosenbergia
USA
1200 Posts |
Posted - 13/05/2016 : 23:22:05
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It looks different from my short series of bimaculatus. That is why I listed it.
Thanks |
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Xaurus
Member Rosenbergia
Germany
1965 Posts |
Posted - 14/05/2016 : 01:02:05
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| It is not M. bimaculatus, maybe look at Trachystohamus subelongatus, see type section, but your picture is a bit strange. |
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BillTyson
Member Rosenbergia
USA
1200 Posts |
Posted - 14/05/2016 : 16:21:11
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Mine is a lot fresher specimen than Pic type, that's for sure.
This one has a larger elytral spot and I think I see a difference in the length of the 3 and 4th antennal segments between the two. |
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Xaurus
Member Rosenbergia
Germany
1965 Posts |
Posted - 26/05/2016 : 00:39:18
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404.71 KB
at my spms from Vietnam the dark spot is variable in size, your spm is very similar, but I'm not quite sure with the ID, there is another similar species Monochamus semigranulatus Pic, 1925 described from Vietnam, maybe Xavier or Gerard can find the type spm in MNHN.
I found a spm from the FREY coll det. by Breuning but it could be wrong |
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Xavier
Scientific Collaborator
France
12347 Posts |
Posted - 02/06/2016 : 07:56:54
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| This specimen fits Breuning's description of Monochamus semigranulatus (Pic, 1925) in " révision des Agniini" pages 436-437 , but as you said, we have to check holotype specimen. |
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BillTyson
Member Rosenbergia
USA
1200 Posts |
Posted - 05/06/2016 : 00:38:05
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| Thanks to all. |
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MONO
Member Purpuricenus
China
361 Posts |
Posted - 09/10/2017 : 17:49:51
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| Xaurus's species is very similar to the holotype of Trachystohamus subelongatus |
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Francesco
Forum Admin
Luxembourg
9521 Posts |
Posted - 09/07/2022 : 08:30:54
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| Indeed: Trachystohamus semigranulatus (Pic, 1925) after the revision published here. |
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Vietnam: Trachystohamus semigranulatus
