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Xavier
Scientific Collaborator
France
12074 Posts |
 Posted - 11/07/2012 : 12:58:48
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12-14 mm. Hua Phan, Nord Est Laos.
Xylotrechus incurvatus (Chevrolat, 1863), pour le forum. |
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 12/07/2012 : 10:45:24
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Merci beaucoup, Xavier!
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 12/07/2012 : 14:39:15
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| Sur le site de A. Gordinski, je trouve une photographie semblable à mon premier spécimen identifiée également comme Xylotrechus incurvatus. |
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horshehden
Member Purpuricenus
Czech Republic
424 Posts |
Posted - 12/07/2012 : 14:59:52
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Well, the most important point here is what actually is X. incurvatus?
If it is the species I collected in Taiwan, your determination is not correct. |
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 12/07/2012 : 15:44:35
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| Well, that's what I said !(sorry for my English, but I'm French !) I don't know if yours is a good X. incurvatus, and likely, mines are not. |
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 12/07/2012 : 16:00:28
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Very interesting topic!
X. arcuatus was described as Amauresthes from two specimens coming from Hong-Kong.
Here is the original description... I do not exactly recognise none of that specimens. |
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 12/07/2012 : 16:39:20
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I read the description...
The main difference between pictures 1 and 3 is the space between second and third lignes. But one detail tell me that Horshehden specimen is closer from X. incurvatus : "la deuxième ligne se terminant à la hauteur de son début". It's not working for my specimen.
Can you separate the second picture and create a new post ? It's really another species. |
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 12/07/2012 : 16:50:56
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| No problem... |
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 12/07/2012 : 18:03:45
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| thanks Francesco |
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 13/07/2012 : 09:41:42
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The former one is probably X. contortus Gahan, 1906, while the latter one is X. incurvatus.
Both species may be seen in this paper (p. 193, fig. 18-19).
According to Gressitt (1951: p. 244-245), the former species is subspecies of the latter one, but this is another delirium of this entomologist.
In fact, both "subspecies" are present in Manipur (Gahan, 1906: 249), Taiwan (Matshushita, 1933: 269-270), Assam and South China (Gressitt, 1951!). |
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 13/07/2012 : 11:20:31
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What a job Francesco ! Thank you very much !
Thanks a lot to horshehden for his picture.
I have seen that something didn't work..., but now it seems clear.
I've got 6 or 7 specimens of Xylotrechus contortus, and it's a stable species on this series.
I've got probably 50 species of Clytini with no name coming from Laos, and this post gives me some courage. |
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 13/07/2012 : 11:40:15
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| Descriptions of both species given by Gahan are "determining". |
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horshehden
Member Purpuricenus
Czech Republic
424 Posts |
Posted - 26/08/2012 : 11:49:40
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Another species from the same group as X. incurvatus.
Central Sechuan, this time. |
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nalslan
Member Purpuricenus
China
297 Posts |
Posted - 16/12/2012 : 14:00:26
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I have one similar to this collected from Guizhou province which is a province next to southern Sichuan of China.
I guess it probably is a var or a subspecies of X. incurvatus. |
Edited by - nalslan on 16/12/2012 14:07:59 |
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Xavier
Scientific Collaborator
France
12074 Posts |
Posted - 16/12/2012 : 14:21:13
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Welcome Nalslan
I agree with you ; it seems to be the same species. |
Edited by - Xavier on 16/12/2012 14:23:25 |
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nalslan
Member Purpuricenus
China
297 Posts |
Posted - 17/12/2012 : 11:46:20
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quote:
Originally posted by Xavier
Welcome Nalslan
I agree with you ; it seems to be the same species.
Xavier, thank you very much.
I found this website and its forum and the users are very friendly and helpful, especially to me, a beginner to cerambycid id (I usually did not do this myself).
I hope I won't abuse it, though I might more or less do it.  |
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Topic |
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Xylotrechus contortus vs. incurvatus
