Halgerda formosa? from East Africa

March 9, 2000
From: Bernard Picton

Note added 7 January 2004. This is almost certainly a form of H. wasinensis. See relevant discussion.

Dear Bill,
Here is a picture of a specimen collected off Pemba Island, Tanzania in February 1999 which I believe to be Halgerda formosa (H. punctata?) but I was not certain if the gills of the one you illustrated were much more branched and dense. I saw three individuals of this species so have some other photographs if it is interesting.

Best wishes,
Bernard

bernard.picton.um@nics.gov.uk

Picton, B., 2000 (Mar 9) Halgerda formosa? from East Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2014

Dear Bernard,
This certainly looks like the animal I described from Zanzibar and identified as H. punctata, and which Fahey & Gosliner (1999) have reindentified as H. formosa. If your other photos show any colour variation and/or parts of the foot it would be interesting to include them as well.

I have included the original colour figures of Halgerda formosa published by Bergh in 1888 (Pl 77, figs 10, 11) some time later than the original description. They are from paintings by Moebius. I assume the red spots were originally a darker purple, though I am not too sure of the gills and rhinophores.

Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Mar 9). Comment on Halgerda formosa? from East Africa by Bernard Picton . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2014

Related messages

  1. Halgerda wasinensis? from Sodwana Bay
    From: Colin Ogden, October 21, 2008
  2. Unknown Halgerda
    From: Valda Fraser, April 29, 2008
  3. Halgerda wasinensis ? from Mozambique
    From: David Abecasis, March 31, 2008
  4. Re: More Halgerda wasinensis pics from Mozambique.
    From: Natasja Vandeperre, August 10, 2007
  5. Are these Halgerda formosa?
    From: Pasquale Pascullo, March 4, 2006
  6. Halgerda sp from Zanzibar
    From: Wilhelm van Zyl, November 11, 2005
  7. Colour variation in Halgerda wasinensis
    From: Colin Ogden, July 5, 2005
  8. Mating Halgerda wasinensis from Mozambique
    From: Riaan Marx, March 1, 2005
  9. More Halgerda wasinensis pics from Mozambique.
    From: Riaan Marx, March 1, 2005
  10. Re: Halgerda wasinensis? from East Timor
    From: Nick Hobgood, March 19, 2004
  11. Halgerda wasinensis? from East Timor
    From: Nick Hobgood, March 17, 2004
  12. Halgerda wasinensis from NE South Africa
    From: Charles Rowe, February 13, 2004
  13. Halgerda formosa identity
    From: Shireen Fahey, January 7, 2004
  14. Halgerda wasinensis from Kenya
    From: Gavin Bushell, January 7, 2004
  15. Halgerda wasinensis - colour variation
    From: Bill Rudman, January 7, 2004
  16. Halgerda formosa? from Mayotte
    From: Marina Poddubetskaia, November 26, 2003
  17. Halgerda wasinensis from South Africa
    From: Riaan Marx, April 14, 2003
  18. Halgerda formosa and H. punctata
    From: Danny Van Belle, January 28, 2003
  19. Halgerda toliara or H. formosa from Madagascar
    From: Lindsay Warren, September 18, 2002
  20. Halgerda wasinensis from Christmas Island
    From: W.B. Rudman, May 3, 2002
  21. Halgerda wasinensis from South Africa
    From: Valda Fraser, September 3, 2000
  22. Re: Nudibranch from Mozambique
    From: Vincent Tomeno, May 24, 2000
  23. Re: Jorunna? or Halgerda? from Mozambique
    From: Vincent Tomeno, May 20, 2000
  24. Jorunna? or Halgerda? from Mozambique
    From: Vincent Tomeno, May 19, 2000
  25. Jorunna from Mozambique
    From: Vincent Tomeno, May 18, 2000
  26. Name Change of Halgerda punctata
    From: Ernest C.J. Seamark, November 18, 1999
  27. Halgerda punctata from South Africa
    From: Ernest C.J. Seamark, July 20, 1999

Show factsheet and all related messages