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 Malaysia: Euryarthrum bifasciatum
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Sergi
Member Rosenbergia

Spain
1741 Posts

Posted - 29/01/2015 :  08:58:13  Show Profile  Email Poster  Reply with Quote


From Malaysia, Borneo, Sabah, Trus-Madi.
Size: 22 mm

dryobius
Member Rosenbergia

USA
1885 Posts

Posted - 29/01/2015 :  15:11:10  Show Profile  Email Poster  Reply with Quote
I think this is E. bifasciatum, a female apparently. E. bifasciatum and E. hastigerum look much like each other. I still have a lot of difficulty with this genus, so somebody please say something if what I say does not make sense. First, apical antennal segments may be either all black or orangish-yellow. Secondly, the apical sutural elytral spine may be elongated or not.

Holzschuh says in his description of E. hastigerum: (in German, which I can't translate very well):

Differentialdiagnose. E. bifasciatum unterscheidet sich von der neuen Art besonders durch die deutlich abgeflachten Flügeldecken, nicht hell behaartes Schildchen, sofort von der Basis an nach außen stark erweitertes 6. Fühlerglied, kürzere Fühler, das #9792; durch normal gebautes Abdomen und kurzen Nahtdorn sowie das #9794; durch nach innen gebogene Vorderschienen und in einen sehr langen Fortsatz verlängerte Mittelschienen.
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