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 Key to Rhytidodera White, 1853

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Francesco Posted - 26/08/2013 : 20:27:38
Following Gerard's suggestion and thanks to the numerous pictures of this Forum, I provide a key to the genus Rhytidodera.

Like other keys, the possibility to insert new pictures or to improve the already written key with distribution and biology will allow having a more and more complete guide... thank to your help!
So, I suggest you to periodically check this guide, since new updates could have been added.


Generality

Rhytidodera White, 1853 is an Asian genus belonging to the tribe Cerambycini Latreille, 1804.

This genus is characterised by:
interantennal furrow;
cylindrical body;
posterior legs short;
antennae more or less flattened, shorter than body.
15   L A T E S T    R E P L I E S    (Newest First)
Xavier Posted - 06/07/2024 : 15:05:25
- Rhytidodera integra Kolbe, 1886 a l'apex des élytres arrondi (cf description). L'espèce figurée dans la clef est mal déterminée.

- Rhytidodera concolor Nonfried, 1895 est une espèce du genre Pachylocerus Hope, 1834 (à publier)

- Je pense que Rhytidodera siamica Nonfried, 1892 = Rhytidodera simulans (White, 1853) (à publier)
Pierre Posted - 30/08/2013 : 11:36:00
Ce genre de petite clé illustrée, très pragmatique, ça fait des outils introuvables.
Bravo Francesco, et merci aux contributions de tous!
Xavier Posted - 29/08/2013 : 11:13:39
Wonderfull
Larry Bezark Posted - 27/08/2013 : 03:48:01
Awesome, Francesco (and everyone who posted pics).

Very Helpful.

Larry B.
Francesco Posted - 26/08/2013 : 22:16:16
12. (Described from Myanmar: Tenasserim. Widespread in Nepal, Thailand, Malaysia and Borneo) ... simulans (White, 1853)

Photo Gérard Chemin

-. (Thailand) ... siamica Nonfried, 1892

Note
: I do not know the difference since, apparently, Nonfried did not know R. simulans either (here, p. 378).
In fact, he confronted his new species to R. cristata! Moreover, all other cerambycids described in that paper are actually synonyms.
Francesco Posted - 26/08/2013 : 22:06:10
11. Body with spotted pubescence (Korea, China, Taiwan, Vietnam, Laos) ... integra Kolbe, 1886

Photo Gérard Chemin

-. Body with nearly uniform pubescence (Sumatra) ... concolor Nonfried, 1895

Note: I do not know really the difference since, apparently, Nonfried did not know R. integra.
Francesco Posted - 26/08/2013 : 22:02:08
10. Clypeus forming a transparent brown field over the mandibles (Borneo) .... clypealis Holzschuh, 2007

Photo Francesco Vitali

-. Clypeus normal ... 11.
Francesco Posted - 26/08/2013 : 21:50:32
9. Body more robust; elytra with longitudinal yellow lines (India) .... robusta Gahan, 1891

Muséum National d'Histoire Naturelle, Paris

-. Body more elongated; elytra with spots of grey and yellow pubescence ............ 10
Francesco Posted - 26/08/2013 : 21:48:49
8. Elytra rounded at the outer apex .............. 9
-. Elytra toothed at the outer apex ............. 12
Francesco Posted - 26/08/2013 : 21:42:36
7. Antennae flabellate (Laos, Thailand, Borneo) .... grandis Thomson, 1865

Photo Gérard Chemin


-.
Antennae not flabellate .........8

Francesco Posted - 26/08/2013 : 21:32:06
6. Body medially smaller (25-35 mm); elytra with yellow pattern and grey pubescence (Nepal, Myanmar, n-Thailand, Laos, Vietnam, China)... bowringii White, 1853

Photo Pierre Haller

-. Body medially larger (30-45 mm); elytra with only grey pubescence (China, n-Vietnam) ... griseofasciata Pic, 1912

Photo Pierre Haller
Francesco Posted - 26/08/2013 : 21:27:53
5. Pronotum with irregular dorsal ridges (Indonesia: Celebes) ...integrifrons Heller, 1897

Photo Andreas Weigel

-. Pronotum with regular dorsal ridges (Asian species) ....................... 6
Francesco Posted - 26/08/2013 : 20:44:07
4. Elytra rounded at the outer apex (ne-India, Nepal) ... consona Holzschuh, 1995
-. Elytra obliquely truncated at the outer apex ....................... 5
Francesco Posted - 26/08/2013 : 20:38:39
3. Elytra with 2 long acute spines at each apex; body pubescence dark brown (Borneo) ........ cristata Pascoe, 1866

Photo Gérard Chemin

-. Elytra truncated, nearly unarmed at the apex; body pubescence light brown (Thailand)..... mutabilis Holzschuh, 1993

Photo Gérard Chemin

Francesco Posted - 26/08/2013 : 20:35:21
2. Elytra with a post-median transverse dark band ................. 3
-. Elytra with many spots of grey and/or yellow pubescence .... 4


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