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

 All Forums
 Cerambycidae Prioninae
 Meroscelisini
 Guatemala/Mexico: Trichoderes pini ♂
 New Topic  Reply to Topic
 Send Topic to a Friend
 Printer Friendly
| More
Author Previous Topic Topic Next Topic  

Pierre
Member Rosenbergia

Switzerland
1081 Posts

Posted - 09/01/2011 :  21:06:33  Show Profile  Email Poster  Reply with Quote


3 Trichoderes shown here.
The specimen on the left comes from Guatemala, the other two from Jalisco / Mexico.
I do not know the difference between the two Trichoderes species pini and rugosus. Can you help here?

Edited by - Capitaine on 11/02/2016 15:20:56

Francesco
Forum Admin

Luxembourg
7803 Posts

Posted - 10/01/2011 :  09:28:53  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
In cases like that, it is necessary to search for the original description of the last described species.
Here, Bates gives his diagnosis: "rugosus differs from pini in the elytra chestnut-reddish, shining, with cribrose and wrinkled puncturing. Antennae and legs missing" (the last ones are not a useful characters! ).
Consequently... what do you think about?
Go to Top of Page

Pierre
Member Rosenbergia

Switzerland
1081 Posts

Posted - 10/01/2011 :  17:35:30  Show Profile  Email Poster  Reply with Quote
Well, honestly, this is exactly the kind of "definition" which I don't like to read... the specimen from Guatemala was labelled rugosus when I received it. Regarding the puncture and the general appearance of the elytra, I do not find any striking difference. The photo shows quite well the different colorations between the beetle on the left (1995) and the two on the right side (fresh captures). But besides this darker colour, nothing really differs between them. So, according to Bates and hos poor description, they could all be rugosus.
Go to Top of Page

Francesco
Forum Admin

Luxembourg
7803 Posts

Posted - 10/01/2011 :  19:00:37  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
mhmmm... considering the elytral puncturing of that specimens of rugosus and pini, it seems to me that your ones are more similar to pini.
Go to Top of Page

Capitaine
Scientific Collaborator

France
1174 Posts

Posted - 11/02/2016 :  15:20:23  Show Profile  Email Poster  Reply with Quote
Back to this topic, I agree with Francesco on the determination.
All these specimens are T. pini (males). T.rugosus features a strongest elytral punctuation (wormlike) close to the base and suture with a darker coloration of elytrae.

Claude
Go to Top of Page
  Previous Topic Topic Next 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