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 Cerambycidae Cerambycinae
 Cerambycini
 Bolivia: Poeciloxestia
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Pierre
Member Rosenbergia

Switzerland
1752 Posts

Posted - 23/06/2019 :  17:43:11  Show Profile  Email Poster  Reply with Quote

130.62 KB



169.79 KB



98.26 KB

Male from Bolivia, 26mm. Not sure at all about it's identification…

Capitaine
Scientific Collaborator

France
1835 Posts

Posted - 25/06/2019 :  15:07:07  Show Profile  Email Poster  Reply with Quote
C'est bien un Sphallotrichinae assez proche de P.sagittaria mais qui ne correspond pas au niveau de l'article 3 des antennes… peut être new ?

Claude
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Pierre
Member Rosenbergia

Switzerland
1752 Posts

Posted - 25/06/2019 :  20:33:55  Show Profile  Email Poster  Reply with Quote
Je connais assez bien les Poeciloxestia. Dans l'ensemble ils sont remarquablement stables au niveau de leur coloration élytrale. Rien que sur ce point, cette bête ... embête. Par exemple, la bande discale qui ne couvre pas les épaules; ou l'absence de point supplémentaire latéral; ou le fait que la bande marginale soit strictement interrompue après le premier quart. Ou encore la ponctuation élytrale. La seule dent suturale, bien développée. Je ne connais rien qui combine tous ces détails sur une seule bête.
Puis la sculpture du pronotum; rien à voir avec P. sagittaria chez qui le disque pronotal est largement lisse, à ponctuation extrêmement éparse.
La pilosité de la face ventrale est aussi un détail qui reste à étudier.
Bref... je ne m'en sors pas.

Edited by - Pierre on 26/06/2019 06:26:38
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Capitaine
Scientific Collaborator

France
1835 Posts

Posted - 26/06/2019 :  18:31:32  Show Profile  Email Poster  Reply with Quote
Effectivement Pierre, il peut s'agir probablement d'une espèce non décrite? Tu devrais te rapprocher des spécialistes de la faune sud-américaine comme Santos-Silva (et autres…)

Claude
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dryobius
Member Rosenbergia

USA
1885 Posts

Posted - 27/06/2019 :  06:49:51  Show Profile  Email Poster  Reply with Quote
Pierre, why don't you provide more data than just "Bolivia". It is a very large country, not as large as Brazil but still it might help. Next, there has been extensive collecting ( I mean very extensive ! ) in some areas of Bolivia by Wappes, Clarke and others. if you send a good close-up photo of the pronotum to Santos-Silva, he may help you.
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Pierre
Member Rosenbergia

Switzerland
1752 Posts

Posted - 27/06/2019 :  09:35:03  Show Profile  Email Poster  Reply with Quote



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125.94 KB


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o.k. I write to Antonio,
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Pierre
Member Rosenbergia

Switzerland
1752 Posts

Posted - 27/06/2019 :  20:15:44  Show Profile  Email Poster  Reply with Quote
Well, according to Antonio, this beetle matches with Poeciloxestia hirsutiventris Fragoso, 1978. He says he has 2 specimen, one of them being a PT.
Larry's site shows the HT (which has disappeared in the fire at the Museu Nacional). This same item, as well as one or two others, illustrate Fragoso's revision or Martin's Cerambycidae Sul Americanos. ALL of them have the dorsal vittae of elytra very similar: much less constricted than on my beetle, and the constriction not that angulate. Moreover, the lateral vitta of my specimen is interrupted which again does not fit with what I could see so far.

Edited by - Pierre on 27/06/2019 20:16:56
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Pierre
Member Rosenbergia

Switzerland
1752 Posts

Posted - 29/06/2019 :  15:30:59  Show Profile  Email Poster  Reply with Quote



204.26 KB

Antonio was so kind to send us a picture of his PT.
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Capitaine
Scientific Collaborator

France
1835 Posts

Posted - 30/06/2019 :  14:56:38  Show Profile  Email Poster  Reply with Quote
Effectivement, la bande noire periscutellaire ne couvre pas les épaules et l'interruption de la bande latérale semble identique. Merci à Antonio.

Claude
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