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 Cerambycidae Cerambycinae
 Callidiopini
 Philippines, Ceresium: raripilum ?
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Pierre
Member Rosenbergia

Switzerland
1083 Posts

Posted - 16/11/2017 :  21:56:00  Show Profile  Email Poster  Reply with Quote


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Ceresium ase a difficult chapter. No idea for this one: 14mm, from Mindanao. Body blackish dark brown, with this reddish brown spot un elytrae. Could this be an immature specimen?
The beetle seems to have lost a good part of it's pilosity which must have been present on the entire surface of the elytrae like many other Ceresium.

Edited by - Xavier on 17/11/2017 08:13:04

Xavier
Scientific Collaborator

France
8349 Posts

Posted - 17/11/2017 :  08:12:24  Show Profile  Email Poster  Reply with Quote
The closets species is Ceresium raripilum Newman, 1842, but I do not know all species from Philippines.
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Pierre
Member Rosenbergia

Switzerland
1083 Posts

Posted - 18/11/2017 :  09:19:04  Show Profile  Email Poster  Reply with Quote
By reading Hüdepohl's text, C. raripilum has 3rd joint as long as scapus (o.k.), 1/4 longer than the 4th (??), pronotum coarsely, shallowly, densly punctate (??) without smooth median area (my beetle has such an area).
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Xavier
Scientific Collaborator

France
8349 Posts

Posted - 18/11/2017 :  10:29:18  Show Profile  Email Poster  Reply with Quote

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Those 2 specimens are from Mindanao. I called them Ceresium raripilum Newman, 1842 but I have not the original description neither the holotype picture. You specimen looks the same, with less hairs.
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Pierre
Member Rosenbergia

Switzerland
1083 Posts

Posted - 18/11/2017 :  11:22:48  Show Profile  Email Poster  Reply with Quote
You might be right. - Nevertheless if your beetles seem to show a fourth joint slightly shorter than the third, mine has these joints of exactly the same lenght (2mm). In addition to this (and this fact remembers a recent discussion on an other species), I really wonder how a beetle is able to rub down it's pilosity on the entire body, including antennae and almost all leg and foot parts, in an almost perfect symmetrical way...

Edited by - Pierre on 18/11/2017 11:23:31
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