Halgerda toliara? from Sth Africa

February 17, 2006
From: Colin Ogden

Hi Bill,
Am I right in the ID of this animal as Halgerd toliara. I found him in a cave, so maybe the lack of light as well as the diet might affect his colouration.

Locality: Sodwana Bay, 15m, South Africa, Indian, 9 Feb 2006, coral reef
Length: 30 mm. Photographer: Colin Ogden

Regards
Colin

scubaco@iafrica.com

Ogden C. M., 2006 (Feb 17) Halgerda toliara? from Sth Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15818

Dear Colin,
I'm afraid I have great difficulty in sounding authoritative over the identity of species of Halgerda. Sometimes I think there is a pattern emrging and other times I despair. I haven't seen a specimen of H. toliara which has a yellow background colour like this, and I haven't seen a Halgerda which changes from yelllow to white like this.

It is possible that it is H. toliara, certainly the raised tubercles around the mantle edge seem characteristic, but I suspect we are just going to have to wait until more is known about colour variability within populations.
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Feb 17). Comment on Halgerda toliara? from Sth Africa by Colin Ogden. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15818

Factsheet

Halgerda toliara

Related messages

  1. Re: Halgerda toliara? from Nosy Be Madagascar
    From: Greg Regnier, January 21, 2009
  2. Halgerda toliara? from Nosy Be Madagascar
    From: Ugo Gaggeri, December 15, 2006
  3. Halgerda toliara from Sth Africa
    From: Colin Ogden, May 19, 2005
  4. Halgerda toliara from Mayotte
    From: Marina Poddubetskaia, January 7, 2004
  5. Halgerda cf. toliara from Mayotte
    From: Marina Poddubetskaia, January 7, 2004
  6. Halgerda toliara? from Mayotte (1)
    From: Marina Poddubetskaia, April 15, 2003
  7. Halgerda toliara? from Mayotte (2)
    From: Marina Poddubetskaia, April 15, 2003
  8. Halgerda toliara from South Africa
    From: Sean Sequeira, June 24, 2002
  9. Halgerda toliara? from South Africa
    From: Valda Fraser, June 30, 2000
  10. A good photo of Halgerda toliara
    From: Valda Fraser, May 11, 2000
  11. Halgerda toliara from South Africa
    From: Valda Fraser, November 17, 1999

Show factsheet and all related messages