March 12, 2001
From: Richard Willan
The white, spikey dorid in Marli Wakeling's photograph from British Columbia is
Diaphorodoris lirulatocauda. It is distinctive among the many small, papillose dorids in the northeastern Pacific. Sandra Millen gave a very thorough description of it in 1985, with good comparisons between it and the Onchidoris species with which it is sympatric, the closest externally being O. muricata. Two definitive characters of D. lirulatocauda that are easily visible in Marli's photo are the shape of the rhinophores and the papillae on the mantle. In D. lirulatocauda the rhinophores are long and slender with a blunt tip (rectangular and flat-topped tip in O. muricata) and the papillae are cylindrical in D. lirulatocauda (each papilla bears a knobbed club in O. muricata). I met D. lirulatocauda myself in California and Mexico in 1986, the latter representing a significant range extension southwards.
• Bertsch, H. & R.C. Willan, 1986. Occurrence of the nudibranch Diaphorodoris
lirulatocauda in northwest Mexico. The Festivus, 18(10): 145.
• Millen, S.V. 1985. The nudibranch genera Onchidoris and Diaphorodoris (Mollusca, Opisthobranchia) in the northeastern Pacific. The Veliger, 28(1): 80-93.
Richard.Willan@nt.gov.auWillan, R., 2001 (Mar 12) Diaphorodoris lirulatocauda. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3954
Thanks for the message and information on this species. The problem with only having one photo is how to interpret the characters. So I decided to err on the side of caution.
Thanks to you, and the others for confirming it identity.
Diaphorodoris lirulatocauda from the Yellow Sea, Korea
From: Dong Bum Koh, December 7, 2009
Re: Diaphorodoris lirulatocauda from California
From: John Yasaki, September 24, 2008
Diaphorodoris lirulatocauda from California
From: Clinton Bauder, May 29, 2007
Re: Diaphorodoris lirulatocauda
From: Dave Behrens , March 12, 2001
Re: Diaphorodoris lirulatocauda from British Columbia
From: Jeff Goddard, March 12, 2001
Diaphorodoris lirulatocauda? from British Columbia
From: Marli Wakeling, March 8, 2001