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 Cerambycidae Lamiinae
 Gyaritini
 Vietnam: Gyaritus cf. auratus
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Larry Bezark
Member Rosenbergia

USA
1523 Posts

Posted - 02/08/2015 :  17:18:12  Show Profile  Email Poster  Reply with Quote

64.98 KB

7mm from Bi Doup National Park

very nice pronotal spines/hooks and basal elytral protuberances

Larry B.

dryobius
Member Rosenbergia

USA
1254 Posts

Posted - 02/08/2015 :  17:57:38  Show Profile  Email Poster  Reply with Quote
maybe you can start with Acanthocinini here.. some of them have these types of spines
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Francesco
Forum Admin

Luxembourg
7705 Posts

Posted - 02/08/2015 :  20:09:28  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
It is a Gyaritus (Gyaritini).
Are eyes entire or divided in two lobes?
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jplami
Member Purpuricenus

France
418 Posts

Posted - 02/08/2015 :  20:33:21  Show Profile  Email Poster  Visit jplami's Homepage  Reply with Quote
Espèce ou forme proche de Gyaritus auratus avec des bandes élytrales foncées moins larges et moins prononcées (surtout la post-médiane) que sur la forme typique (ou sur le Gyaritus de l'autre post)

Lamiaires du MondeLamiines of WorldCerambycidae Lamiinae website

Edited by - jplami on 02/08/2015 20:55:19
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Larry Bezark
Member Rosenbergia

USA
1523 Posts

Posted - 03/08/2015 :  05:11:54  Show Profile  Email Poster  Reply with Quote
Francesco, the eyes are divided but not completely,
the lobes are connected by 3-4 rows of ommatidia.

JP, yes this one is very different that the type of G. aurata, especially the apical third of the elytra with the somewhat opposite sinuate dark marks.

Does anyone know G. quadridentatus Pic from Vietnam?

Larry B.
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jplami
Member Purpuricenus

France
418 Posts

Posted - 03/08/2015 :  19:52:48  Show Profile  Email Poster  Visit jplami's Homepage  Reply with Quote
Extrait de la clé des Gyaritus (Gyaritus) de Breuning, 1979:4 (révision des Gyaritini)
1. Le troisième article des antennes plus long que le scape ... 2 (11... G auratus)
- Le troisième article des antennes moins long que le scape ... 12 (13... G quadridentatus)

Extrait Breuning, 1979: 5
3. quadridentatus Pic
Mimoenispia quadridentata Pic, 1936 Mél. exot. Ent., LXVII, p. 18.
Proche de hamatus Pasc., mais plus grand, les épines discales du pronotum non recourbées et moins longues, les épines latérales du pronotum minimes, les lobes inférieurs des yeux aussi longs que les joues, le tubercule dentiforme postbasilaire de l'élytre plus élevé; sur chaque élytre une bande transversale basilaire brune, une autre bande médiane pareille descendant obliquement en direction de la suture et une troisième bande brune préapicale descendant très obliquement en direction du bord latéral; le restant de l'élytre couvert de pubescence jaune d'ocre.
Long.: 9 mm; larg.: 2 mm.
Décrit par Pic sur des individus du Tonkin: Hoa-Binh.


Lamiaires du MondeLamiines of WorldCerambycidae Lamiinae website

Edited by - jplami on 03/08/2015 19:56:55
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Larry Bezark
Member Rosenbergia

USA
1523 Posts

Posted - 04/08/2015 :  17:17:13  Show Profile  Email Poster  Reply with Quote
Thanks Jean-Philippe,

as it turns out, both of my specimens have the 3rd antennal segment longer than the scape (as in auratus), however this one is different than the type of auratus.

I would like to see an image of quadridentatus.

Larry B.
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jplami
Member Purpuricenus

France
418 Posts

Posted - 04/08/2015 :  19:15:39  Show Profile  Email Poster  Visit jplami's Homepage  Reply with Quote
I don't think it's G quadridentatus.
Breuning, 1950 also described G siamensis but the elytral pattern is different (with gold postmedian mark).
From the indochinese region (S-China included), I don't know any other species. Probably it's new...

Lamiaires du MondeLamiines of WorldCerambycidae Lamiinae website
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Larry Bezark
Member Rosenbergia

USA
1523 Posts

Posted - 04/08/2015 :  19:25:03  Show Profile  Email Poster  Reply with Quote
Thank you,

Larry B.
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