A species of Halgerda?

August 18, 2009
From: Nick Chapman

Concerning message #21917:

Hello Bill,
Are there any Halgerda sp reported with the black pustules shown on this beast? Please excuse my stupidity if it's not a Halgerda!

Locality: Chaloklum Bay, 6 metres, Koh Phangan, Thailand, Gulf of Thailand, 03 June 2009, Sand, rocks. Length: ~3 cm. Photographer: Nick.

Thank you again & Best wishes,
Nick.

info@chaloklum-diving.com

Chapman, N, 2009 (Aug 18) A species of Halgerda?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22561

Dear Nick,

It certainly has the general appearance of some species of Halgerda, so please don't think of yourself as stupid, but it is one of the many forms of Dendrodoris denisoni. The blue spots are a good clue. Also, this species has a very thin body-wall, so if you touch it you would find it is much softer than a species of Halgerda, which has a thick muscular, somewhat rigid, body-wall.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Aug 18). Comment on A species of Halgerda? by Nick Chapman. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22561

Related messages

  1. Re: Dendrodoris denisoni or D. gunnamatta
    From: Atkinson, L. & D., November 12, 2009
  2. Re: Dendrodoris denisoni from Sydney
    From: Jessica Herder, August 1, 2008
  3. Dendrodoris denisoni from South Africa
    From: Peter Small, April 11, 2008
  4. Dendrodoris denisoni from Rockingham WA
    From: Mick Tait, August 13, 2007
  5. Another Dendrodoris denisoni from Thailand
    From: Mr Philip Mason, April 13, 2007
  6. Dendrodoris denisoni from Thailand
    From: Mr Philip Mason, April 12, 2007
  7. Dendrodoris denisoni from Townsville, Queensland
    From: Melanie Wood, December 12, 2006
  8. Bizarre behavior of Dendrodoris denisoni
    From: Dong Bum Koh, June 23, 2006
  9. Dendrodoris denisoni from Bali, Indonesia
    From: Stefan Harrieder, May 28, 2005
  10. The eggs of Dendrodoris denisoni in S. Korea
    From: Dong Bum Koh, May 10, 2005
  11. Dendrodoris denisoni from Singapore
    From: Lim Han Peng, April 22, 2005
  12. Dendrodoris denisoni from Reunion island
    From: Philibert Bidgrain, February 22, 2005
  13. Dendrodoris denisoni from Northern NSW
    From: Denis Riek, March 15, 2004
  14. Dendrodoris denisoni from New Zealand
    From: Mark Burnett, January 8, 2004
  15. Dendrodoris denisoni from Thailand
    From: Nat Yisunsri, July 11, 2003
  16. Dendrodoris denisoni from Indonesia
    From: Tony White, May 23, 2003
  17. Dendrodoris denisoni and starfish
    From: Dong Bum, Koh, February 21, 2003
  18. Dendrodoris denisoni from New Zealand
    From: Mark Burnett, February 21, 2003
  19. Dendrodoris denisoni from Chek Jawa, Singapore
    From: Ria Tan, January 30, 2003
  20. Dendrodoris denisoni from Port Stephens
    From: Allan Saben, January 17, 2003
  21. Dendrodoris denisoni from New Zealand
    From: Ian Simpson, December 12, 2002
  22. Dendrodoris denisoni from Taiwan
    From: Connie, August 15, 2002
  23. Dendrodoris denisoni from Hawaii
    From: Rita Bishop, July 16, 2002
  24. Hoplodoris?? from the Philippines
    From: Erwin Koehler, November 14, 2001
  25. Behaviour of Dendrodoris denisoni in New Zealand
    From: Liz Buckley, September 24, 2001
  26. Juvenile Dendrodoris denisoni from Queensland
    From: Nerida Wilson, June 8, 2001
  27. Dendrodoris denisoni from Port Stephens
    From: Stuart Hutchison, August 19, 2000
  28. Dendrodoris denisoni or D. gunnamatta
    From: P.Zylstra & H.Rothenfluh, June 22, 2000
  29. Dendrodoris denisoni from South Africa
    From: Valda Fraser, April 19, 2000
  30. Dendrodoris denisoni from Sydney
    From: Stephanie Clark, January 3, 2000
  31. Dendrodoris denisoni from New Zealand
    From: Ross Armstrong, December 13, 1998

Show factsheet and all related messages