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 Vietnam: Glenea sp.
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Xaurus
Member Rosenbergia

Germany
1796 Posts

Posted - 07/01/2016 :  23:30:23  Show Profile  Email Poster  Reply with Quote

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This spm should be G. nigrorubricollis Lin & Yang, 2009 (19 mm), not yet known from Vietnam, but I'm not happy with this species complex together with G. subrubricollis and G. rubricollis acc Lin et al. 2009

Edited by - Xavier on 23/01/2023 17:37:16

Gerard
Scientific Collaborator

France
5155 Posts

Posted - 08/01/2016 :  17:39:50  Show Profile  Email Poster  Reply with Quote
Glenea nigrorubricollis Lin & Yang, 2009 pour moi aussi.
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 10/01/2018 :  09:46:41  Show Profile  Email Poster  Reply with Quote
I am not able to separate on picture G. subrubricollis & G. nigrorubricollis !
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 10/01/2018 :  11:12:55  Show Profile  Email Poster  Reply with Quote
If I understand something:

Glenea subrubricollis male: length of scape = segment 3 = segment 4; lower lobe of the eye slightly longer than cheek.

Glenea nigrorubricollis male: scape shorter than segment 3 or 4; lower lobe of the eye 2 times longer than cheek.

For the rest, when reading the descriptions, there is no difference in hairs, punctuation, colour, spots and stripes between the two species.
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 06/07/2020 :  08:20:19  Show Profile  Email Poster  Reply with Quote
Male of G. nigrorubricollis has antenna longer than the body.

Your specimen is Glenea subrubricollis Lin & Tavakilian, 2009.
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Vitali
Member Rosalia

Estonia
955 Posts

Posted - 23/01/2023 :  10:56:11  Show Profile  Email Poster  Reply with Quote
Hello! I am trying to identify my specimen of Rubroglenea, and thus came to this older post.
Xavier, if stretched the antennae of this specimen are longer than the body. Why did you stay with the name Glenea subrubricollis?
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 23/01/2023 :  12:59:29  Show Profile  Email Poster  Reply with Quote
I just see(?) that this specimen has length of scape = segment 3 = segment 4.
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Vitali
Member Rosalia

Estonia
955 Posts

Posted - 23/01/2023 :  13:52:41  Show Profile  Email Poster  Reply with Quote
Yes, it is difficult with a photo. Unlike the third and forth antennal segments, the scape is visible under some angle. It seems to be shorter.
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 23/01/2023 :  17:32:55  Show Profile  Email Poster  Reply with Quote

Yes, posssible, I do not know.


98.94 KB

Edited by - Xavier on 23/01/2023 17:36:29
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Xaurus
Member Rosenbergia

Germany
1796 Posts

Posted - 24/01/2023 :  00:25:46  Show Profile  Email Poster  Reply with Quote
My spms is a male, with measured parts:
scapus=2,1mm
3rd segment=2,1mm
4th segment=2,0mm
ratio lower eye lobes/cheeks ~ 1,9
- nearly the same for further 4 males !!

which species ??

Edited by - Xaurus on 24/01/2023 00:26:20
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Vitali
Member Rosalia

Estonia
955 Posts

Posted - 25/01/2023 :  11:33:12  Show Profile  Email Poster  Reply with Quote
Based on a bit slenderer third antennomere and the shape of median pubescent macula on elytron, which is also used as a diagnostic character in Lin's paper, I would vote for G. nigrorubricollis.
The length of antennae in males is so subtle character that I hardly can see any difference between G. nigrorubricollis and G. subrubricollis even in the male photos shown in the original paper.
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 25/01/2023 :  14:29:00  Show Profile  Email Poster  Reply with Quote

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1 Glenea nigrorubricollis Lin & Yang, 2009 HT
2 Glenea subrubricollis Lin & Tavakilian, 2009 HT
3 Glenea sp. Vietnam female
4 Glenea sp. Laos male
5 Glenea sp. Vietnam male

About the shape of the median macule, Lin does not give any details, and only says that it is "different" than a "a median rather large and transverse spot".
Next to the two Holotype specimens, here are three specimens from Vietnam and Laos, with an even different macule shape. By the length of the antennae, my two males are probably Glenea subrubricollis Lin & Tavakilian, 2009. No idea for the female.

Edited by - Xavier on 25/01/2023 14:50:03
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Vitali
Member Rosalia

Estonia
955 Posts

Posted - 25/01/2023 :  15:06:36  Show Profile  Email Poster  Reply with Quote
It is in the Diagnosis for G. subrubricollis: "Differs from G. nigrorubricollis Lin et Yang sp. nov in ... median pubescent macula on elytron with different shape and pubescent spots on abdominal segments all orange"
Difficult. Nr. 4 and 5 seem to correspond more to G. nigrorubricollis, but nr. 3 is different and, by the way, it has also fourth antennomere shorter than the third one. Is this a feature of a female?

Edited by - Vitali on 25/01/2023 15:08:44
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 25/01/2023 :  15:13:50  Show Profile  Email Poster  Reply with Quote
Thanks, I created a new post here for the specimen n3. Give me your opinion...

Edited by - Xavier on 25/01/2023 15:18:43
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Riana
Member Rosalia

South Africa
715 Posts

Posted - 25/01/2023 :  19:19:45  Show Profile  Email Poster  Reply with Quote
I must admit I am so glad to reside and work on African cerambycids....
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Xavier
Scientific Collaborator

France
11744 Posts

Posted - 25/01/2023 :  19:54:21  Show Profile  Email Poster  Reply with Quote
quote:
Originally posted by Riana

I must admit I am so glad to reside and work on African cerambycids....
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