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 Laos: Pachyteria diversipes

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Xavier Posted - 24/10/2018 : 17:24:05

356.5 KB
29 mm / 32 mm; Laos(Luang Prabang Prov.). Is it Pachyteria diversipes Ritsema, 1890 ?
11   L A T E S T    R E P L I E S    (Newest First)
Xavier Posted - 27/10/2018 : 17:28:56
Merci Philippe !
L'exemplaire posté par Gérard confirme que la couleur des antennes est variable, j'en reste donc à P. diversipes. J'ignore si cela vaut le coup de signaler ces variétés, maintenant qu'elles sont visibles ici.
cerambyphil Posted - 27/10/2018 : 15:25:54
Voilà, j'ai enfin trouvé le temps de faire des photos !
En fait Xavier, sur tes couples, le mâle est à gauche. Ses antennes paraissent plus courtes à cause de leur position en arc de cercle. Elles possèdent les 5 derniers antennomères noirs, ce qui est normal pour diversipes (4 à 6 derniers noirs d'après Morati et Huet).
Mis à part la coloration noire du pronotum et du prosternum, je maintiens qu'il n'y a pas de différence avec diversipes.


456.29 KB
Couple avec femelle à gauche et mâle à droite.
origine : Vietnam
Gerard Posted - 27/10/2018 : 10:15:52
Bonjour, je rajoute une bête acheter en même temps que Xavier.


384.56 KB
Xavier Posted - 26/10/2018 : 15:19:56
quote:
Originally posted by Vitali

The number of black antennomeres is also one of the characters used to differentiate Pachyteria species. This is also different in these specimens... and this is one of the reasons I suggested a new species. Consider also the colour pattern, red legs and the length of antennae.


I obviously agree with you.
Vitali Posted - 26/10/2018 : 14:58:55
The number of black antennomeres is also one of the characters used to differentiate Pachyteria species. This is also different in these specimens... and this is one of the reasons I suggested a new species. Consider also the colour pattern, red legs and the length of antennae.
Xavier Posted - 26/10/2018 : 14:45:38

282.28 KB
La preuve en image. As-tu, Philippe, une photographie de la face ventrale d'un P. diversipes, voire d'un couple, pour argumenter la description ?
Xavier Posted - 26/10/2018 : 14:20:21
Je continue en Français...
Merci pour ta réponse; le problème, c'est que c'est bien un couple que j'ai posté, et le mâle ( à droite) a les antennes plus courtes que le spécimen que tu présentes dans ta clef.
Donc, en excluant P. diversipes...
cerambyphil Posted - 26/10/2018 : 13:26:58
Hello Xavier, I check my collection and the revision from Morati/Huet (2004) and I conclude it is a new variety of P. diversipes.
It has all the characteristics of the species: The shape and the puncture of the pronotum, the color of antennomeres and elytra, the pubescens ...
The only difference is the black part of the pronotum. It is certainly a local variety which has not been seen until now. Morati/Huet only studied one exemplar from Laos. This new variety is interesting for showing the intraspecific variation of this species.
The length of the antennae is different between male and female. My photo is a male with a very large (across the width) and deep (in a half circle) indentation at the apex of the last sternite; the female (your specimens?) has got a small median indentation at the apex of the last sternite.
Xavier Posted - 24/10/2018 : 21:56:38
Vitali Posted - 24/10/2018 : 21:27:08
Seems to be a new species
Xavier Posted - 24/10/2018 : 19:29:20
Length of antenna is shorter than on picture here.

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