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 Cerambycidae Lamiinae
 Gyaritini
 Thailand : Gyaritus auratus
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Andre
Member Rosenbergia

Germany
1685 Posts

Posted - 17/06/2022 :  13:52:19  Show Profile  Email Poster  Reply with Quote

Male, 7.5 mm


Male, lateral view


Female, 9.5 mm

S-Thailand, Trat Prov., Ko Kut Isl.

Yimnashana alfredi G. & V., 2016 ?

Edited by - Xavier on 07/09/2022 16:24:00

Xavier
Scientific Collaborator

France
12014 Posts

Posted - 17/06/2022 :  18:18:31  Show Profile  Email Poster  Reply with Quote
Check also Gyaritus quadridentatus (Pic, 1936), but the holotype seems to me a little immature.
Trat is not in "south" Thailand .

Edited by - Xavier on 17/06/2022 18:21:12
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Xavier
Scientific Collaborator

France
12014 Posts

Posted - 06/09/2022 :  21:20:35  Show Profile  Email Poster  Reply with Quote
Sorry, G.quadridentatus has different spines.
Your specimen, with dark pattern is probably Gyaritus auratus Breuning, 1963. I will post some specimens from north Laos this week.
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Xavier
Scientific Collaborator

France
12014 Posts

Posted - 07/09/2022 :  15:57:07  Show Profile  Email Poster  Reply with Quote

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Gyaritus auratus Breuning, 1963 has two small lateral and visible spines on the pronotum, like your specimen. Yimnashana alfredi Gouverneur & F. Vitali, 2016 (here a paratype) has two minimal lateral spines on the pronotum, barely visible, and less elongated elytra.

Edited by - Xavier on 10/09/2022 11:16:10
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Francesco
Forum Admin

Luxembourg
9407 Posts

Posted - 10/09/2022 :  11:27:28  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
A very big difference is the shape of the hind wings.
As I have written to Larry, there is the possibility that the Yimnashana are actually altitudinal Gyaritus; therefore, Yimnashana might not be a true genus but a group of subspecies characterised by reduced hind wings.
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