Order: NUDIBRANCHIA
Suborder: DORIDINA
Superfamily: ANADORIDOIDEA
Family: Polyceridae
Subfamily: Polycerinae

PHOTO

Locality: Similan Islands, dive site West of Eden, 27 m, Thailand, Andaman Sea, 30 January 2009, sandy, flat bottom . Length: 2 cm. Photographer: Marcel Tanke.

The body is a translucent brownish yellow with a black reticulate pattern. The pair of dorsolateral processes are proportionally very large.

Authorship details
Rudman, W.B., 2009 (February 13) [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/thecsp4

Related messages


Re: Thecacera from Thailand

May 25, 2009
From: Vie Panyarachun

Concerning message #22215:

Sightings of this species seems to be occuring regularly in the Similans for the past few years.

I saw quite a few individuals at "East of Eden" during a trip in Apil '08. They were located relatively near each other but were not paired up or touching.

Locality: "East of Eden," Similan Islands National Park, 15 m, Thailand, Andaman Sea, 25 Apil 2008, reef. Photographer: Vie Panyarachun.

Vie

vpanyarachun@hotmail.com

Panyarachun, V., 2009 (May 25) Re: Thecacera from Thailand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22263

Dear Vie,

Thecacera sp. 4 is a spectacularly coloured species. It is surprising it has only become known in the last decade. I notice a branching bryozoan colony in your photos which could well be the food of this species.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (May 25). Comment on Re: Thecacera from Thailand by Vie Panyarachun. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22263

Re: Thecacera from Thailand

February 16, 2009
From: Ron Silver

Concerning message #22215:

The Slug Site posted a similar looking species of Thecacera from Thailand at:

http://slugsite.us/bow/nudwk426.htm

Ron Silver

rhinopias@comcast.net

Silver, R., 2009 (Feb 16) Re: Thecacera from Thailand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22258

Thanks Ron,

Yes that certainly seems to be a colour variation of the same species

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Feb 16). Comment on Re: Thecacera from Thailand by Ron Silver. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22258

Re: Thecacera from Thailand

February 16, 2009
From: Lawrence Neal

Concerning message #22215:

Dear Bill,
You might have seen it illustrated on the back cover of the book Nudibranchs and Sea Snails Indo-Pacific Field Guide by Helmut Debelius from 1996. The pictures in that book were taken in the Maldives.

Best regards,
Lawrence

lorenzo_n@yahoo.com

Neal, L., 2009 (Feb 16) Re: Thecacera from Thailand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22253

Thanks Lawrence,

Best wishes,
Bill Rudman

Thecacera from Thailand

February 13, 2009
From: Marcel Tanke

Concerning message #21601:

Hi Bill,
Here a couple of pictures of a Thecacera that I could not find on your great forum yet.

Locality: Similan Islands, dive site West of Eden, 27 m, Thailand, Andaman Sea, 30 January 2009, sandy, flat bottom . Length: 2 cm. Photographer: Marcel Tanke.

Best regards,
Marcel

marceltanke@cs.com

Tanke, M.A., 2009 (Feb 13) Thecacera from Thailand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22215

Dear Marcel,

I have the feeling of seeing this somewhere before, but I can't recall where. Unless someone can jog my memory, it appears to be an unnamed species. I'll call it Thecacera sp. 4.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Feb 13). Comment on Thecacera from Thailand by Marcel Tanke. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22215