Adalaria or Onchidoris from California

August 8, 2007
From: Clinton Bauder

Hi Bill,

Not sure about this one. Could be either Onchidoris muricata or Adalaria jannae.

Locality: Partington Landing, 15 meters, CA, USA, Pacific, 28 July 2007, Rocky Reef. Length: 10 mm. Photographer: Clinton Bauder.

Clinton

gecko1@apple.com

Bauder, C., 2007 (Aug 8) Adalaria or Onchidoris from California. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20372

Hi Clinton,

Oh my, you have done it again. As in your previous submission of a similar specimen, I must echo Bill's reply that these species are very similar looking externally. What I can say is, looking at Bill's cropped photo enlarging the dorsal tubercles, they do not look caryophylletic. I cannot make out any spicules protruding from the tubercles, only those embedded in the mantle. If this is accurate, then you have, Onchidoris.

Any idea what the tiny white critter to the left of your specimen in the lower photo is?

Thanks as usual,
Dave Behrens
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Dave,
I am pretty sure the white animal is a little crustacean wth a large central eye
Bill

Behrens, D.W., 2007 (Aug 8). Comment on Adalaria or Onchidoris from California by Clinton Bauder. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20372

Factsheet

Onchidoris muricata

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