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 Vietnam: Perissus tristiculus
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Andre
Member Rosenbergia

Germany
1734 Posts

Posted - 01/06/2013 :  18:07:57  Show Profile  Email Poster  Visit Andre's Homepage  Reply with Quote

57.63 KB

Cao Bang Prov., N - Vietnam,
Male, 9 mm.

Might be Perissus biluteofasciatus Pic, 1918.

Edited by - Xavier on 25/03/2025 20:06:37

Xavier
Scientific Collaborator

France
12366 Posts

Posted - 01/06/2013 :  19:36:50  Show Profile  Email Poster  Reply with Quote
Here the original description of PIC, with related species :

Perissus thibetanus n. sp. Holotype here
Angustatus, postice attenuatus, niger, parum nitidiis, thorace postice, scutello et infra corpore pro parte albo, notatis, elytris albo trifasciatis (fascia postbasalis obliqua, fascia postmedia transversa, fascia apicalis); antennisi brevibus; thorace elongato, postice strangulato ; elytris parum elongatis, antice dilatatis, apice subtruncatis; pedibus gracilibus.
Long. 12 mill. Thibet. Probablement voisin de C. tristiculus Frm., qui ne m'est pas connu en nature.

Perissus biluteofasciatus n. sp. Holotype here
Satis robustus, parum nitidus, rugoso-punctatus, niger, thorace albo marginato, elytris ante et post medium luteo-griseo, fasciatis, apice griseo notatis.
Long. 13 mill. Tonkin. - Ressemble au précédent, mais plus robuste, élytres plus courts;, etc.



Perissus tristiculus (Fairmaire, 1895) Holotype here

Edited by - Xavier on 12/05/2025 18:06:00
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Xaurus
Member Rosenbergia

Germany
1970 Posts

Posted - 01/06/2013 :  23:31:11  Show Profile  Email Poster  Reply with Quote
Rather it belongs to the genus Ischnodora Chevrolat, 1863?
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Andre
Member Rosenbergia

Germany
1734 Posts

Posted - 02/06/2013 :  00:06:50  Show Profile  Email Poster  Visit Andre's Homepage  Reply with Quote
Hallo Xaurus.
C. Holzschuh hat 2009 Ischnodora rectangula aus NE Laos beschrieben und vergleicht die Art mit I. sejugata.
Alle für I. sejugata aufgeführten Merkmale treffen vollkommen zu.
- schräge basale Querbinde
- Sternit 3 und 4 nicht weiß gebändert
- Pygidium nur spärlich weiß behaart
- beide weißen Querbinden auf deutlich weißen Grund.
Habe zwar die Originalbeschreubung von Ischnodora sejugata Holzschuh, 1991 nicht, aber ich bin mir ziemlich sicher das es sich um diese aus N-Thailand beschriebene Art handelt.
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Xaurus
Member Rosenbergia

Germany
1970 Posts

Posted - 04/06/2013 :  00:43:09  Show Profile  Email Poster  Reply with Quote

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Hallo Andre,

ich habe I. sejugata Holzschuh, 1991, ich denke sicher bestimmt, aus S-Yunnan, das Tier sieht schon so aus, müsten noch mal die Genitalien vergleichen.
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Xavier
Scientific Collaborator

France
12366 Posts

Posted - 25/03/2025 :  20:07:28  Show Profile  Email Poster  Reply with Quote
Your specimen, Andre, is Perissus tristiculus (Fairmaire, 1895).
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Xavier
Scientific Collaborator

France
12366 Posts

Posted - 10/05/2025 :  12:57:40  Show Profile  Email Poster  Reply with Quote
quote:
Originally posted by Xaurus


289.77 KB

Hallo Andre,

ich habe I. sejugata Holzschuh, 1991, ich denke sicher bestimmt, aus S-Yunnan, das Tier sieht schon so aus, müsten noch mal die Genitalien vergleichen.



I think your specimen is Perissus thibetanus Pic, 1918
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Xaurus
Member Rosenbergia

Germany
1970 Posts

Posted - 10/05/2025 :  23:35:01  Show Profile  Email Poster  Reply with Quote
maybe you are rigth, but difficult for me, otherwise Thibet is a different region ....
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Xavier
Scientific Collaborator

France
12366 Posts

Posted - 11/05/2025 :  08:45:39  Show Profile  Email Poster  Reply with Quote
In his description, Holzschuh indicates that I. sejugata has the last articles of the antennae strongly lightened, which is visible on the illustration of his species. My Perissus thibetanus Pic, 1918 from Laos and Vietnam appear to be identical to my photograph of the holotype. But I don't know any more.


55.48 KB
Ischnodora sejugata Holzschuh, 1991 HT Thailande(Chiang Rai)
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Andre
Member Rosenbergia

Germany
1734 Posts

Posted - 11/05/2025 :  21:48:44  Show Profile  Email Poster  Visit Andre's Homepage  Reply with Quote
Entschuldigt die späte Reaktion. Laut Petr Viktora ist mein Ex. Perissus biluteofasciatus Pic, 1918.
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Xavier
Scientific Collaborator

France
12366 Posts

Posted - 12/05/2025 :  17:53:22  Show Profile  Email Poster  Reply with Quote
Ich habe die Holotypen der beiden Arten, P. biluteofasciatus , P. tristiculus und P. thibetanus, fotografiert; die Fotos sind im Forum und bei Larry erhältlich. (Link oben). Ich würde mich freuen, wenn ich verstehen könnte, wie Petr diese beiden Arten unterscheidet.

Edited by - Xavier on 12/05/2025 18:06:30
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