Cerambycoidea Forum
Cerambycoidea Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 Generalities
 Scientific questions
 Petrognatha gigas ssp. spinosa
 New Topic  Reply to Topic
 Send Topic to a Friend
 Printer Friendly
| More
Author Previous Topic Topic   

Michael Garrod
Member Nathrius

Switzerland
2 Posts

Posted - 24/11/2009 :  18:26:15  Show Profile  Email Poster  Reply with Quote
I noticed besides Petrognatha gigas there also exists the subspecies gigas spinosa, what is the difference between the two?

Francesco
Forum Admin

Luxembourg
9454 Posts

Posted - 24/11/2009 :  23:14:38  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
According to the description, the variety spinosa Kolbe, 1894 is carachterised by the elytra provided with spines missing in the typical form.
Afterwards the original description:

Petrognatha gigas F. var. spinosa.
Alle Stücke dieser Art, welche auf dem Kamerungebirge (bei Bvvea) von Dr. Preuss gefunden wurden, unterscheiden sich von der Hauptform durch die stacheligen Flügeldecken. Diese sind reichlich mit aufrecht stehenden Stacheln besetzt, welche nur nach der Spitze zu kürzer und etwas nach hinten gebogen sind. Im übrigen ist kein Unterschied zwischen dieser Form und der Hauptform zu finden.
Aus anderen Gegenden Kameruns vorliegende Exemplare besitzen keine Spur von Stacheln, ebensowenig wie solche aus Ober- und Nieder-Guinea.


I do not know if this form is typical of Cameroon or can be also found somewhere else. However, Aurivillius (1921) (pag. 206) quoted this form from Congo and Fernando Po too.
Go to Top of Page

Michael Garrod
Member Nathrius

Switzerland
2 Posts

Posted - 25/11/2009 :  15:06:14  Show Profile  Email Poster  Reply with Quote
Great explanation, thank you very much for your reply. Hope to get a pair one time for my collection.
Go to Top of Page
  Previous Topic Topic   
 New Topic  Reply to Topic
 Send Topic to a Friend
 Printer Friendly
| More
Jump To:
Cerambycoidea Forum © 2000-08 Snitz Communications Go To Top Of Page
Powered By: Snitz Forums 2000 Version 3.4.07