Brownish colour form of Triopha catalinae

May 10, 2005
From: Paul Sim

Hi Bill,

Please help ID this Triopha. Some people locally think it a variation of Triopha catalinae. I've only seen it twice but each time it has been a brownish base color. I include two individuals for your perusal.

Locality: Whytcliff Marine Park, British Columbia, Canada. Pacific Ocean.
Depth: 50 feet. Length: 1 inch. 06 October 2004. wall. Photographer: Paul Sim

Thanks,
Paul

plsim@shaw.ca

Sim, P.D., 2005 (May 10) Brownish colour form of Triopha catalinae. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13733

Dear Paul,
I would agree that it looks rather different from Triopha catalinae. It is the animal called Triopha sp. 1 in Behrens, 1991. According to Behrens (2004) Sandra Milen has looked at its anatomy and decided it is a colour form of Triopha catalinae. Specimens of this colour form are noted by Behrens from Washington, British Columbia and Alaska

  • Behrens, D. W. (1991) Pacific Coast Nudibranchs. Monterey, California, Sea Challengers.  107pp.
  • Behrens, D. W. (2004) Pacific Coast Nudibranchs, Supplement 2. New species to the Pacific Coast and new information on the oldies. Proceedings of the California Academy of Sciences, 55: 11-54.

Best wishes,
Bill Rudman

Rudman, W.B., 2005 (May 10). Comment on Brownish colour form of Triopha catalinae by Paul Sim. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13733

Factsheet

Triopha catalinae

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