Re: Thordisa bimaculata from Carmel, California

June 23, 2006
From: Phil Garner

Concerning message #3881:

I found one this morning at Marineland in Rancho Palos Verdes, California. I thought it was a color variation of Archidoris montereyensis until I got home and looked it up. It was crawling along some Kellet's Whelk eggs at 60 feet. It is the first one I've found in 214 dives at that site.

Locality: Marineland, Rancho Palos Verdes, 60 feet, California, USA, Eastern Pacific, 19 June 2006, Rocky reef. Length: 2 inches. Photographer: Phil Garner.

Phil Garner

PacificCoast101@cox.net

Garner, Philip, 2006 (Jun 23) Re: Thordisa bimaculata from Carmel, California. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16924

Hi Phil,
Pretty nice find.  Thordisa bimaculata is not a common species at all.  Described by the late James Lance in 1966, it has been observed from Carmel, California south to Isla Navidad, Baja California.

Your specimen clearly shows the two large concentration of brownish black spots on the midlines.  Two inches in length makes this specimen a giant.

Thanks for sharing your find with us,
Dave Behrens

Behrens, D.W., 2006 (Jun 23). Comment on Re: Thordisa bimaculata from Carmel, California by Phil Garner. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16924

Factsheet

Thordisa bimaculata

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