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 Cerambycidae Cerambycinae
 Clytini
 Xylotrechus contortus vs. incurvatus
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Francesco
Forum Admin

Luxembourg
9420 Posts

Posted - 17/12/2012 :  14:00:11  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
quote:
Originally posted by nalslan

I found this website and its forum and the users are very friendly and helpful, especially to me

Thank you very much nalslan and Welcome to the Forum!
I hope you will enjoy it!
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nalslan
Member Purpuricenus

China
297 Posts

Posted - 18/12/2012 :  05:09:11  Show Profile  Email Poster  Reply with Quote
Francesco, thank you very much for this great website.
You've done amazing job on the cerambycids research. And I can image the great effort you put for this website. I've learned a lot and I will keep on researching and learning from it.
Also I would like to share longhorn photos I got and may ask for more helps.
Thank you and other members in advance.
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Francesco
Forum Admin

Luxembourg
9420 Posts

Posted - 07/04/2013 :  11:45:03  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
quote:
Originally posted by nalslan



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.



Thank to the picture of the type which Xavier provided, this species can finally be identified as Xylotrechus diversesignatus Pic, 1908.
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Xavier
Scientific Collaborator

France
12076 Posts

Posted - 07/04/2013 :  14:16:57  Show Profile  Email Poster  Reply with Quote
You make a little mistake, Francesco : it's not the type.
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Francesco
Forum Admin

Luxembourg
9420 Posts

Posted - 07/04/2013 :  19:15:28  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
C'est pas grave... mais s'agit-il de la même espèce?
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Xavier
Scientific Collaborator

France
12076 Posts

Posted - 07/04/2013 :  19:44:25  Show Profile  Email Poster  Reply with Quote


Je pense que l'espèce de Nalslan et la mienne sont les mêmes, avec quelques variations, non ?
La description donnée par Gressitt m'a l'air de coller : 4 bandes noires sur les élytres, la deuxième et le troisième bande élytrale reliées au milieu ; la suture noire...

Edited by - Xavier on 07/04/2013 19:48:23
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Xaurus
Member Rosenbergia

Germany
1907 Posts

Posted - 08/04/2013 :  01:08:07  Show Profile  Email Poster  Reply with Quote
Actually I don't know what is X. incurvatus exactly. X. contortus should be clear (mayb anybody have seen the typ spms from Gahan in BMNH ?). The pict. 19 (X. incurvatus contortus) in Makihara (1981) belongs to another (not yet id sps) sps, already mentioned in Weigel (2006): Checklist and Bibliography of Longhorn Beetles from Nepal (Cerambycidae).
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Xavier
Scientific Collaborator

France
12076 Posts

Posted - 08/04/2013 :  07:49:41  Show Profile  Email Poster  Reply with Quote
I haven't Makihara's paper...and I'm agree with you : without type, it's always the same problem.

Have you seen Gressitt's draw from X. incurvatus contorsus in longicorn of China (1951) ? For me, it's not the same species, but his description is different from 1970 !... I add this draw tonight.

Edited by - Xavier on 08/04/2013 07:55:44
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Xavier
Scientific Collaborator

France
12076 Posts

Posted - 08/10/2013 :  13:18:21  Show Profile  Email Poster  Reply with Quote
For my specimen, the first of this topic, please have a look here :
http://www.cerambycoidea.com/forum/topic.asp?TOPIC_ID=15765
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