Doris montereyensis from Monterey, CA

April 27, 2006
From: Clinton Bauder


Hi Bill,

As part of the ongoing discussion around yellow and white dorids from the West coast of North America I went looking for Geitodoris heathi and Doris montereyensis. The yellow slug in this message is the typical D. montereyensis. Dave Behrens has ID'd the white one as being D. montereyensis also. I believe Jan Kocian has some nice shots showing white and yellow animals mating which make the case pretty strongly as the yellow animals are quite typical of D. montereyensis.

If these white dorids are D. montereyensis it seems that my photo [message #3166 top right photo] which is now on the front page for Geitodoris heathi should be moved to the page for D. montereyensis or at least moved off of the front page for Geitodoris and tagged as being questionable.

For comparison I've included 3 shots of Geitodoris in a separate message [#16297 ].

All of the photos were taken by my friend Mike Jimenez.

Locality: Shale Beds, Monterey, 18 meters, CA, USA, Pacific, 8 April 2006, Shale Reef. Length: 50-60mm. Photographer: Michael Jimenez.

Clinton

gecko1@apple.com

Bauder, C., 2006 (Apr 27) Doris montereyensis from Monterey, CA. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16296

Hi Clinton,

Straightening out the many messages here on the Forum showing variations (many hard to identify at all) of yellow dorids from the eastern Pacfic Ocean, will take some time.  This is a great start however.

Yes, these are very typical D. montereyensis as noted by the black pigmentation covering the dorsal tubercles.  Also characteristic is that the color of the rhinophores and gill match the color of the body.  Also note the pointed shape of the tubercles in Michael's great photos.

Hopefully Jan will send us his examples of white and yellow color variants, occurring together.  It is interesting to note that the occurrence of the white variant is becoming more and more common, thus all these questions from Branchers.  I am not sure I had ever seen this color 20 years ago.

Thanks,
Dave Behrens

===================

PS: Hi Clinton, I agree your photo of the white & yellow animals shouldn't be left on the Geitodoris heathi Fact Sheet - if the experts aren't sure of its identity its not much use as a guide to the uninitiated. I've moved it from the Fact Sheet but of couse it's still in your message #3166. .....  Bill Rudman

Behrens, D.W., 2006 (Apr 27). Comment on Doris montereyensis from Monterey, CA by Clinton Bauder. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16296

Factsheet

Archidoris montereyensis

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