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 Thailand: Eurybatus: pachycornis
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Les
Member Purpuricenus

Thailand
106 Posts

Posted - 09/05/2014 :  03:23:42  Show Profile  Email Poster  Reply with Quote

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Eurybatus decempunctatus
This was taken on Doi Suthep-Pui, Chiang Mai Province, N. Thailand on 22 April 2014, c. 1200m.

I think I have the right id, but would appreciate confirmation.
Thanks.

Les
www.samuibutterflies.com/galleries/coleopteracerambycidae

Edited by - Les on 09/05/2014 09:48:31

Les
Member Purpuricenus

Thailand
106 Posts

Posted - 19/05/2014 :  09:48:27  Show Profile  Email Poster  Reply with Quote
I've now found the species in the photogallery, but it is under the genus Eurybatus. Which is correct (the name I gave was from a 2002 book)?
I notice that the species name is also slightly altered to show the male genus (Eurybatus) as opposed to the female genus (Rosalia).

Les
www.samuibutterflies.com/galleries/coleopteracerambycidae
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Francesco
Forum Admin

Luxembourg
8991 Posts

Posted - 19/05/2014 :  13:28:55  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
The different names reflect different opinions.

Eurybatus differs from Rosalia in several characters:
  • Both males and females do not have tuft of hairs but spines on the antennae.
  • Males do not have a tooth at the outer angles of the mandibles.
  • Male have 6 (rather than 5) abdominal segments.
  • The body is covered with a yellow-orange-red pubescence in Eurybatus and a white-grey-greenish-bluish in Rosalia.

These characters may be considered as generic or subgeneric.
However, the species do not form a continuum (= intermediate forms do not exist); hence, the existence of two genera is better supported.


P.s. Wonderful picture and beetle. I'd like to find it!
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Les
Member Purpuricenus

Thailand
106 Posts

Posted - 20/05/2014 :  01:08:09  Show Profile  Email Poster  Reply with Quote
Thank you.

Les
www.samuibutterflies.com/galleries/coleopteracerambycidae
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Francesco
Forum Admin

Luxembourg
8991 Posts

Posted - 30/03/2021 :  20:22:04  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
Coming back to this species, considering the antennal length and the thick legs, this specimen is more probably E. pachycornis.
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