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 Congo: Nyctopais mysticus?
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anders
Member Demonax

Norway
53 Posts

Posted - 07/02/2017 :  22:05:04  Show Profile  Email Poster  Reply with Quote



Western RD Congo 13 mm

Edited by - Xavier on 08/02/2017 14:30:36

Vitali
Member Rosalia

Estonia
711 Posts

Posted - 07/02/2017 :  22:39:48  Show Profile  Email Poster  Reply with Quote
Nyctopais?
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africaone
Member Purpuricenus

Belgium
359 Posts

Posted - 07/02/2017 :  23:16:49  Show Profile  Email Poster  Reply with Quote
a technic question : how do you distinct Poimenesperus from Nyctopais ?

s'il n'y pas de solution c'est qu'il n'y a pas de problème ! akuna matata ....
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Vitali
Member Rosalia

Estonia
711 Posts

Posted - 08/02/2017 :  08:41:34  Show Profile  Email Poster  Reply with Quote
To me, Poimenesperus has a different shape of pronotum and different ratio of the widths of elytra shoulders and pronotum. Nyctopais is cylindric. I don't know the key characters, but have representatives of both genera. Nyctesperus is more difficult.
I wrote Nyctopais(?) just because the photo strongly resembles all three Nyctopais species known to me. Though I have not earlier seen yellow tibia.
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anders
Member Demonax

Norway
53 Posts

Posted - 08/02/2017 :  14:33:52  Show Profile  Email Poster  Reply with Quote



Thanks for contributions all!
For key characters see Breuning 1934 (Nov.Ent.I, page 8-10). Especially the drawings on p. 8 of the shapes of the pro- and mesosternal processes in relation to pro- and mesocoxae are diagnostic.
I attach two photos showing details of these structures indicating the species must belong to Nyctopais.
But none of the 4 described species fits with "the yellow-legged thing".
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africaone
Member Purpuricenus

Belgium
359 Posts

Posted - 08/02/2017 :  14:40:35  Show Profile  Email Poster  Reply with Quote
is it possible to obtain a pdf of Breuning 1934 ?

s'il n'y pas de solution c'est qu'il n'y a pas de problème ! akuna matata ....
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Vitali
Member Rosalia

Estonia
711 Posts

Posted - 08/02/2017 :  16:13:59  Show Profile  Email Poster  Reply with Quote
Me too, if possible.
The names of two last photos seem to contain spaces.
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africaone
Member Purpuricenus

Belgium
359 Posts

Posted - 08/02/2017 :  16:23:35  Show Profile  Email Poster  Reply with Quote
What is the correct spelling : Poimenesperus or Poemenesperus ? or are they two different genera (as suggested in Titan).
What looks strange on Titan is that Poimenesperus is set as monospecific including a subgenus Nyctesperus (a nonsense)

s'il n'y pas de solution c'est qu'il n'y a pas de problème ! akuna matata ....
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Francesco
Forum Admin

Luxembourg
7803 Posts

Posted - 08/02/2017 :  17:08:03  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
The correct name is Poimenesperus Thomson, 1857.
Gemminger & Harlod (1873) proposed the unjustified emendation Poemenesperus.

Nyctesperus Breuning, 1934 is a subgenus of Poimenesperus including only Poimenesperus niveicollis Aurivillius, 1903

Both works are in our library and the correct spelling in BioLib here.
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Jérôme Sudre
Member Rosenbergia

France
1027 Posts

Posted - 08/02/2017 :  21:34:44  Show Profile  Email Poster  Reply with Quote
La seule espèce de Nyctopais présentant des tibias jaune est N. jordani mais ici ce n'est pas ça !
Par contre regardez du côté peut être de N mysticus ??
Ce sont des espèces très variables dans la coloration . Donc à voir de près

Edited by - Jérôme Sudre on 08/02/2017 22:05:34
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