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 Cerambycidae Lamiinae
 Xylorhizini
 Malaysia: Parathylactus sumatranus
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Sergi
Member Rosenbergia

Spain
1245 Posts

Posted - 05/01/2014 :  11:36:14  Show Profile  Email Poster  Reply with Quote

342.93 KB

Xylorhizini
From W. Malaysia, Cameron Highlands.
Size: 31 mm

Gerard
Scientific Collaborator

France
3708 Posts

Posted - 05/01/2014 :  12:24:46  Show Profile  Email Poster  Reply with Quote
Ca me semble être Thylactus chinensis Kriesche, 1924
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Francesco
Forum Admin

Luxembourg
7800 Posts

Posted - 19/05/2014 :  21:38:32  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
I think it is instead Thylactus mjoebergi Aurivillius, 1925, described from Sumatra and Nias.
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Jérôme Sudre
Member Rosenbergia

France
1027 Posts

Posted - 19/05/2014 :  22:16:12  Show Profile  Email Poster  Reply with Quote
C'est bien lui !
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dryobius
Member Rosenbergia

USA
1303 Posts

Posted - 18/05/2016 :  17:56:13  Show Profile  Email Poster  Reply with Quote
This species looks very close to Parathylactus sumatranus Breuning & de Jong, 1941. They included a photograph in their paper. I have the pdf now which I can share with those interested.

The differences between the two specimens are in the locations of the dark areas on the elytra. It is not much different, but enough to make the determination inconclusive.

I have a specimen of Thylactus mjoebergi from Sumatra, identified by Hudepohl, which is clearly a different species. However I am not yet able to verify Hudepohl's determination since there are some undescribed Thylactus and Cyrtogrammus species in Borneo, and probably other places.
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dryobius
Member Rosenbergia

USA
1303 Posts

Posted - 26/05/2016 :  13:29:14  Show Profile  Email Poster  Reply with Quote
In Aurivillius (1925), he shows a black and white sketch of T. mjoebergi. It is not a good sketch, but the species shown above is clearly something different.
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Francesco
Forum Admin

Luxembourg
7800 Posts

Posted - 26/05/2016 :  14:14:10  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
Well, according to Breuning, Parathylactus differs from Thylactus in the divided eyes.
Do the eyes of this specimen correspond?
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