T O P I C R E V I E W |
loongfah |
Posted - 11/03/2014 : 15:13:38 ![](/public/imgforum/loongfah/2014311145911_RR 010314 04 longhorn beetle.JPG) 472.59 KB
Is this Cereopsius javanicus Breuning, 1936 or Cereopsius sexnotatus Thomson, 1865? |
10 L A T E S T R E P L I E S (Newest First) |
loongfah |
Posted - 20/03/2014 : 01:40:11 Thanks again! The description fits very well with my female specimen except that in my specimen, the base of 3rd, 4th & 5th antenna articles have pale pubescence (not just 3rd & 4th).
My first picture at the top is smaller (17-18mm in length) than those in the description (21-22mm), and the apical marginal angle is slightly less produced; not sure if these are sexual differences since the description did not mention these.
|
Francesco |
Posted - 18/03/2014 : 22:35:26 ![](../public/imgforum/Francesco/2014318223510_DSCN0068.JPG) 320.69 KB
Voilŕ |
loongfah |
Posted - 17/03/2014 : 23:59:47 quote: Originally posted by Francesco
This description is not available on the web; if you want, I could scan Breuning's description (in French).
Thanks a lot, Francesco. That will be much appreciated. ![](images/icon_smile.gif) |
Francesco |
Posted - 17/03/2014 : 19:11:49 This description is not available on the web; if you want, I could scan Breuning's description (in French).
The sexual dimorphism usually concerns the antennal length, such as in this species, I have not got this species; thus, I do not known if the antennal colour could show any difference... |
loongfah |
Posted - 17/03/2014 : 14:39:06 Thanks a lot, Francesco! How about the top picture? The white spots there seem smaller and the antennae are uniformly reddish brown? Could it be different sexes?
I was trying to find the original description of Thomson's Systema Cerambycidarum online but I only found the text proper Pages 3-540, not the appendix p. 541-578, where the description was found.
|
Francesco |
Posted - 16/03/2014 : 21:42:59 quote: Originally posted by loongfah
![](../public/imgforum/loongfah/2014312132845_NS2 020313 05 longhorn beetle.JPG) 507.64 KB
And this is the var. octonotatus Breuning of Cereopsius sexnotatus Thomson, 1865 |
Francesco |
Posted - 16/03/2014 : 21:35:13 quote: Originally posted by loongfah
![](../public/imgforum/loongfah/2014312131020_NS2 200513 07 longhorn beetleCereopsius javan.JPG) 476.36 KB
By considering the distribution and the fact that the white spots has a narrow black margin, the first species should be Cereopsius whitei Thomson, 1865, a species close to helena but present in Malayan peninsula and Nias. |
loongfah |
Posted - 12/03/2014 : 13:33:40 Thanks for all your reply & help with the original description and drawing.
I have another specimen also from Singapore. It looks closer to the C. helena illustration for its larger pre- & postmedian spots on the elytra, and the antennae annulated with white, but there are still clear differences.
![](../public/imgforum/loongfah/2014312131020_NS2 200513 07 longhorn beetleCereopsius javan.JPG) 476.36 KB
For the record, I think this one below matches very well with the description of Cereopsius sexnotatus. Is there sexual dimorphism in this genus?
![](../public/imgforum/loongfah/2014312132845_NS2 020313 05 longhorn beetle.JPG) 507.64 KB |
Francesco |
Posted - 11/03/2014 : 18:43:10 It reminds a lot of Cereopsius helena White, 1858. Here the original drawing:
![](../public/imgforum/Francesco/201431118433_cereopsius_helena.JPG) Cereopsius helena White, 1858 Pl. LIII, Fig. 7, Borneo |
Xavier |
Posted - 11/03/2014 : 17:13:39 ![](../public/imgforum/Xavier/201431117116_javanicus.jpg) from BREUNING Stephan, 1944. Études sur les Lamiaires (Coleop. Cerambycidć). Douzičme tribu : Agniini Thomson.Novitates Entomologicć, 3čme supplément (107-135): 281-512, figs 158-305.
Sorry, but I discover I have not the page of the book for C.sexnotatus T. |