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Robert
Member Rosenbergia
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Canada
1232 Posts |
Posted - 05/02/2016 : 19:25:46
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![](/public/imgforum/Robert/20162519259_Criodion rhinoceros.JPG) 74.21 KB
Venezuela, 41 mm
Criodion rhinoceros? |
Robert V. |
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Capitaine
Scientific Collaborator
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France
1833 Posts |
Posted - 09/02/2016 : 17:50:36
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Cela lui ressemble bien, mais il semble également proche de tuberculatum, chez le mâle les mandibules de rhinocéros sont caractéristiques (relevées à l'avant). |
Claude |
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Robert
Member Rosenbergia
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Canada
1232 Posts |
Posted - 09/02/2016 : 19:22:23
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Donc, on peut éliminer le mâle de rhinoceros. Qu'est-ce qui différencie ces deux espèces? |
Robert V. |
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Capitaine
Scientific Collaborator
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France
1833 Posts |
Posted - 13/02/2016 : 11:53:23
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Au Vénézuela il ya également antennatum mais ce dernier n'a pas d'épines à l'apex elytral. Si on élimine le male de rhinoceros pour les mandibules et la femelle de tuberculatum (antennes plus courtes), il nous reste soit un male de tuberculatum ou une femelle rhinoceros..(les 2 espèces sont armées à l'apex des elytres). Outre l'examen du dernier sternite pour le sexe, il me semble que rhinoceros présente une pilosité plus fournie sur la partie interne des articles antennaires... mais cela reste une impression n'ayant pas de specimen "rhino" en collection.![](images/icon_smile_question.gif) |
Claude |
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dryobius
Member Rosenbergia
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USA
1885 Posts |
Posted - 14/02/2016 : 03:04:45
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Are any of you aware that there is a key to South American Cerambycini?
I have the first 12 volumes of Cerambycidos Sul-Americanos as pdf's. They are mostly too big to email, so would need to use a file transfer service. Just ask. |
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Robert
Member Rosenbergia
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Canada
1232 Posts |
Posted - 14/02/2016 : 05:45:55
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I have a hard copy of Cerambycidos Sul-Americanos volume 5 on Cerambycini. The key to Criodion takes only males into account when it comes to differentiate rhinoceros from tuberculatum.
This being said, I think my specimen is rhinoceros, female. The antennae are a little shorter than tuberculatum (male). The 4th segment looks relatively longer in tuberculatum.
Thanks for the offer, Dan. I have most books in this series except volume 4. However, an electronic copy of the whole series would be welcome, it makes it easier to translate (I dont speak portuguese!!).
Merci Claude pour tes pistes. |
Robert V. |
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