White variation of Doris montereyensis ?

April 28, 2006
From: Jan Kocian


Hello Bill:

While the majority of the Doris montereyensis I encounter during my dives on Whidbey Island are yellow, at one location there are some which are of the white variety.

Locality: Rock jetty, 20 feet, Washington, USA, Puget Sound, NE Pacific Ocean, 8 February 2006, rocks. Length: 35mm. Photographer: Jan Kocian.

Jan Kocian

honkoc@hotmail.com

Kocian, J., 2006 (Apr 28) White variation of Doris montereyensis ?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16457

Hi Jan,

Just when I thought we were getting to the bottom of the GDNEPYD's (that Gosh darn north eastern Pacific yellow dorids), you dig up this series.  Awesome finds, but confusing still.

The top photo is clearly a pair of Doris montereyensis.  Althought the dorsal tubercles look smaller on the white specimen, than on the yellow specimen (of course the inset compares the edge of the white mantle to the mid-dorsal of the yellow), all other characters match, D. montereyensis.

Now the second photo.  I have always considered this D. montereyensis, but at Bill's suggestion Jan, we need to do some internal work to make the final call.  Can you collect two specimens for me to dissect?  Thanks.

The lower photo again is puzzeling.  The dorsal surface looks like D. montereyensis, but with no spots at all, this is quite uncharacteristic.  The tubercles are too large to be Peltodoris lentiginosa, but I do see what almost appears to be a few slightly darker patches of color on the dorsum, similar to P. lentiginosa.  I think you need to collect two of these also.

Thanks Jan.

Darn - GDNEPYD's

Best wishes,
Dave Behrens

Behrens, D.W., 2006 (Apr 28). Comment on White variation of Doris montereyensis ? by Jan Kocian. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16457

Factsheet

Archidoris montereyensis

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