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Pierre
Member Rosenbergia
Switzerland
1904 Posts |
 Posted - 17/09/2026 : 20:57:32
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207.77 KB
Mâles d'une très belle espèce du Nord du Vietnam; 16 et 20mm.
Le dessin frappe par l'étroite ligne jaune écartée de la bande médiane, et par coloration claire de la base élytrale associée à une zone de pilosité grise. |
Edited by - Xavier on 18/09/2026 17:52:44 |
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Xavier
Scientific Collaborator
France
12771 Posts |
Posted - 18/09/2026 : 07:04:46
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| Le plus proche est Xylotrechus pekingensis Pic, 1939; la photographie de son holotype est dans la galerie. Mais je doute cela soit lui. |
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nalslan
Member Purpuricenus
China
332 Posts |
Posted - 18/09/2026 : 09:39:22
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Based on a post by Meiying Lin,
https://mp.weixin.qq.com/s/iOhHlBW-eJRw3z9IXDcL9A
front of head of X. pekingensis presents a V shaped carinae with a middle carinae inside the V shape. If the carinae is a lined ridge, it could be X. yanoi#12290;
quote:
Originally posted by Xavier
Le plus proche est Xylotrechus pekingensis Pic, 1939; la photographie de son holotype est dans la galerie. Mais je doute cela soit lui.
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Xavier
Scientific Collaborator
France
12771 Posts |
Posted - 18/09/2026 : 12:52:03
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It is unclear. Xylotrechus yanoi Gressitt, 1934is a species from Japan, but has been reported from Mongolia (?). Xylotrechus pekingensis Pic, 1939 was described from northern China (Hebei, Shanxi). Neither of these two species – which have clearly been confused by several authors – is expected to occur in Vietnam.
But Here a specimen from China (Guangxi) ! So, check LIN Meiying, GE Siqin & XIAO Nengwen, 2021. A study of the genus Xylotrechus Chevrolat (Coleoptera: Cerambycidae) from Beijing, China.
151.36 KB
from LIN & Al, 2021.
Your photographs, Pierre, offer a glimpse of X.yanoi. |
Edited by - Xavier on 18/09/2026 13:32:09 |
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Pierre
Member Rosenbergia
Switzerland
1904 Posts |
Posted - 18/09/2026 : 15:23:42
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I unfortunately do not have the paper by Lin, Ge & Xiao.
The frontal carina on my beetles is not V-shaped. So I consider yanoi.
Thank you for your imputs! |
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Xavier
Scientific Collaborator
France
12771 Posts |
Posted - 18/09/2026 : 17:51:57
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quote:
Originally posted by Pierre
I unfortunately do not have the paper by Lin, Ge & Xiao.
si, tu l'as  |
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Pierre
Member Rosenbergia
Switzerland
1904 Posts |
Posted - 19/09/2026 : 01:02:08
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| Excellent, merci beaucoup !! |
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Vietnam: Xylotrechus yanoi
