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 Cerambycidae Cerambycinae
 Callichromatini
 Malaysia: Polyzonus copei ♀
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Vitali
Member Rosalia

Estonia
996 Posts

Posted - 04/06/2011 :  13:02:09  Show Profile  Email Poster  Reply with Quote


Another species from the same package.
Characterized by a slender body with parallel sides, dark pronotal spot divided longitudinally in two and black strips on elytra.

"Cameron Highlands", Malaysia. 17 mm.

Francesco
Forum Admin

Luxembourg
9455 Posts

Posted - 05/06/2011 :  08:28:26  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
It is very similar to Chelidonium bryanti Podanı, 1974, described from Sarawak but maybe it belongs to another related species.
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Francesco
Forum Admin

Luxembourg
9455 Posts

Posted - 09/06/2011 :  22:06:51  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
Unfortunately, reading Hüdepohl (1998) the only added species to Podanı's key is C. monticola Hüdepohl, 1989 (description here), a species from the Philippines 30 mm long.
Tomorrow, I add the original picture if C. bryanti.
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Francesco
Forum Admin

Luxembourg
9455 Posts

Posted - 10/06/2011 :  08:31:59  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote

Voilà.
Source: Podanı C., 1974 - Studien über Callichromini der paläarktischen und orientalischen Region (III.) - Annotationes Zoologicae et Botanicae 91: p. 13 (f. 5).

Body length of the holotype (male): 22 mm
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Vitali
Member Rosalia

Estonia
996 Posts

Posted - 10/06/2011 :  10:27:39  Show Profile  Email Poster  Reply with Quote
Thus, it should not be the same species if only the question is not in sex dimorphism. Antennae are completely different.
In your scan: the 4th antennomere is shorter than 3rd, while next antennomeres are relatively long.
In my beetle: 4th and 3rd are equal, 4th might be even slightly longer than 3rd, while the 5th and further are very short and broad. In fact antennae are slightly broadening towards the tip.
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Francesco
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Luxembourg
9455 Posts

Posted - 10/06/2011 :  12:37:43  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
Is your specimen a female?
It should have 5 abdominal segments.
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Vitali
Member Rosalia

Estonia
996 Posts

Posted - 10/06/2011 :  22:23:12  Show Profile  Email Poster  Reply with Quote
I looked up. It has 5 sternites, so a female.
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Francesco
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Luxembourg
9455 Posts

Posted - 10/06/2011 :  22:40:36  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
Hence, it might be its female; nonetheless, the antennae seem to have the same total length...
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Vitali
Member Rosalia

Estonia
996 Posts

Posted - 10/06/2011 :  23:07:39  Show Profile  Email Poster  Reply with Quote
Sorry, I was wrong with the length of 4th antennomere. It ends on the background of mid femora and I missed it regarding 4th and 5th antennomeres as one. What a shame! Anyway, the question seems to be answered now. Thank you a lot.
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Andre
Member Rosenbergia

Germany
1695 Posts

Posted - 11/12/2013 :  22:21:18  Show Profile  Email Poster  Reply with Quote

374.38 KB

Might be Polyzonus copei Vives et al., 2009.
Here the Pronotum from a PT. (Udo Schmidt)

Edited by - Andre on 11/12/2013 22:22:54
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Vitali
Member Rosalia

Estonia
996 Posts

Posted - 17/12/2013 :  23:46:07  Show Profile  Email Poster  Reply with Quote
Dear Andre. I checked my specimen. It seems to be Polyzonus indeed, and I hardly can see any difference from your photo and other, which can be found in Flickr. The correspondence is surprisingly good, up to the wrinkles on pronotum sides, but there are no wrinkled lines on the disk... only punctures. I wonder if this is important. So, Polyzonus copei?
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Andre
Member Rosenbergia

Germany
1695 Posts

Posted - 19/12/2013 :  16:51:01  Show Profile  Email Poster  Reply with Quote
Hallo Vitali. The structure from the Pronotum is often a good feature by the callichromatini and normally few variable.
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Beckey
Member Rosalia

Japan
553 Posts

Posted - 21/12/2013 :  12:25:41  Show Profile  Email Poster  Reply with Quote
I am confused now.

According to "CERAMBYCINAE DE BORNEO - ‡T", its name is Stenochroma copei.

Which name should we use?
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Andre
Member Rosenbergia

Germany
1695 Posts

Posted - 21/12/2013 :  14:43:14  Show Profile  Email Poster  Reply with Quote
Stenochroma copei Vives et. al., 2009 is after Bentanachs Polyzonus Revision 2012 a Polyzonus!
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Beckey
Member Rosalia

Japan
553 Posts

Posted - 21/12/2013 :  23:12:00  Show Profile  Email Poster  Reply with Quote
Thank you Andre, I should get the paper at once!
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