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 Xylotrechus contortus vs. incurvatus

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Xavier Posted - 11/07/2012 : 12:58:48



12-14 mm. Hua Phan, Nord Est Laos.
Xylotrechus incurvatus (Chevrolat, 1863), pour le forum.
15   L A T E S T    R E P L I E S    (Newest First)
Xavier Posted - 08/10/2013 : 13:18:21
For my specimen, the first of this topic, please have a look here :
http://www.cerambycoidea.com/forum/topic.asp?TOPIC_ID=15765
Xavier Posted - 08/04/2013 : 07:49:41
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.
Xaurus Posted - 08/04/2013 : 01:08:07
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).
Xavier Posted - 07/04/2013 : 19:44:25


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...
Francesco Posted - 07/04/2013 : 19:15:28
C'est pas grave... mais s'agit-il de la même espèce?
Xavier Posted - 07/04/2013 : 14:16:57
You make a little mistake, Francesco : it's not the type.
Francesco Posted - 07/04/2013 : 11:45:03
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.
nalslan Posted - 18/12/2012 : 05:09:11
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.
Francesco Posted - 17/12/2012 : 14:00:11
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!
nalslan Posted - 17/12/2012 : 11:46:20
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.
Xavier Posted - 16/12/2012 : 14:21:13
Welcome Nalslan
I agree with you ; it seems to be the same species.
nalslan Posted - 16/12/2012 : 14:00:26



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.
horshehden Posted - 26/08/2012 : 11:49:40

Another species from the same group as X. incurvatus.
Central Sechuan, this time.
Xavier Posted - 13/07/2012 : 11:40:15
Descriptions of both species given by Gahan are "determining".
Xavier Posted - 13/07/2012 : 11:20:31
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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