Limacia mcdonaldi

Image courtesy of Kevin Lee

Limacia cockerelli
Photo by Kevin Lee

Even as far back in 1980 when I published Pacific Coast Nudibranchs and Gary McDonald published his Guide to the Nudibranchs of California, we knew that there were up to three variations of what then was referred to as Laila cockerelli (MacFarland, 1905).

Uribe et al.s recent work has looked at two of those variations and determined that the differences in external morphology are supported by differences in genetic proteins. Working from the beginning with Frank Mace MacFarland's 1905 description they determined that the real L. cockerelli were the specimens with scattered white tubercles on the notum between the long marginal papillae.

In this paper they describe the new species shown above and dedicate it to fellow Brancher Gary McDonald. Known affectionately as either Slugo or McDuck, by those of us with his similar passion, Gary has been a real contributor to science of Nudibranchs along the California coast for many years. Limacia McDucki are the specimens with a single line of red tubercles down the center of the notum. Congrats Gary.

Hopefully the third variation, those specimens with large patches of red pigment between the rhinophores and anterior to the gill, will be examined genetically soon. Wouldn't it be cool if we had three Limacia's along this part of the coast?


Uribe, R.A., Sepulveda, F., Goddard, J.H.R. et al. Mar Biodiv (2017). doi:10.1007/s12526-017-0676-5
Colorful new species of sea slug named after Long Marine Lab's Gary McDonald, UC Santa Cruz Magazine, Spring 2007

Dave Behrens
Sammamish, WA 98074
Apr., 2017
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WEBMASTER'S NOTES: Folks, there is a new kid on the block bookwise. This one you can't do without if your are a frequent traveler to the Anilao area of the Philippines. The price is definitely right at $15!
The I-book is a guide to the nudibranchs and other sea slugs seen during the 1st Nudibranch Festival, 2016 in Anilao in the Batangas region of Luzon Island in the Philippines. Over 490 species are described and illustrated many with multiple images and with general information of the the families and groups. This is the first guide to these beautiful molluscs in this area.

For ordering information, please go to Anilao Nudibranch E-Book!

From left to right, Terry Gosliner, Angel Valdes, Dave Behrens La Jolla, Calif.

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