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Discussion of Characters and Character states

Aedeagus vs penis

Submitted by Chris Lyal on Tue, 2010-11-30 10:18

The male genitalia of weevils comprises an endophallus (= 'internal sac') eversible from a 'median lobe' surrounded by a tegmen.

The term 'median lobe' is probably inappropriate, and many auhtors have not used it, preferring instead 'aedeagus' or 'penis' for this organ. However, we have 2 diametrically-opposed views regarding the use of these terms:

- Some authors use 'aedeagus' for the median lobe, and do not use penis at all.
- Others will use this terminology but employ 'penis' for the aedeagus + tegmen + endophallus

Sternellum or Prosternal Process?

Submitted by Chris Lyal on Fri, 2010-09-24 11:18

In the Glossary of Characters I have described the sternellum as follows:

test forum topic

Submitted by Scratchpad Team on Fri, 2010-09-24 08:55

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Sternellum or Prosternal process?

Submitted by Chris Lyal on Fri, 2010-09-24 08:28

In the Glossary of Characters I have described the sternellum as follows:

Corbels

Edited by s_d_j_brown on Mon, 2009-07-06 06:54

According to the Torre-Buenos glossary of entomological terms:

Quote:
Corbel: an ovate area at the distal end of the tibia in Coleoptera, surrounded by a fringe of minute bristles; when the articular cavity is on the side, above the tip, the corbel is closed; when the cavity is at the extreme tip, the corbel is open.

I'm fine with where the corbel is located, but I'm having trouble picturing what it looks like when it's open or closed.
Anyone have a picture they could post, or know where one's published?

Weevil terminology

Edited by Chris Lyal on Thu, 2009-03-19 21:45

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