Thecacera sp. 2
Molas reef, NE Sulawesi, Indonesia. 3 July, 2002, Depth: 16 metres, Length: approx 15mm. Photo: Jim Anderson
Compare with Thecacera pacifica.Authorship details
Rudman, W.B., 2002 (July 29) Thecacera sp. 2 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/thecsp2
June 11, 2008
From: Teresa Zuberbühler
Concerning message #7648:
I send you here some more pictures of Thecacera sp. 2.
One specimen was really tiny, about 7 mm, probably a juvenile! The large one you see eating a bryozoan.
Locality: Komodo (small nudi) and Sulawesi, 15-20 m, Indonesia, Pacific, July 2005, sand and rubble with little coral cover. Length: 7 mm (small) and 2 cm. Photographer: Teresa (Zubi) Zuberbühler.
Teresa (Zubi) Zuberbühler
email@example.comZuberbühler, T., 2008 (Jun 11) Re: Thecacera sp. 2?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21601
Thanks for these photos. Apart from the feeding record they show the strange ribbed 'plate' at the base of the rhinophore stalk very well. As I have mentioned before it looks a though it could be a sensory structure
April 30, 2008
From: Kenneth Yong
It's question time again: Is this your Thecacera sp. 2? Will it soon receive a specific name?
Locality: Sipadan Island, Coral Garden divesite, 10 m, Sabah, Malaysia, Celebes Sea, 18 July 2007, On sandy bottom. Length: 5 cm. Photographer: Kenneth Yong.
Thanks a million.
firstname.lastname@example.orgYong, K., 2008 (Apr 30) Thecacera sp. 2. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20616
Thanks for this record. I don't think anyone is working on this family at present. These days naming new species just for the sake of it is not given a high priority amongst most researchers. We usually try and describe new species in the context of a broader revision of a genus or family. In that way the anatomy of various species can be compared and evolutionary relationships considered.
February 8, 2008
From: Asther Lau
Concerning message #11981:
A late Happy New Year 2008 to you. Attached is a photo of what I believe is a Thecacera sp. 2 which I saw back in Mabul Island.
Locality: Mabul Island, About 16 metres, Sabah, Malaysia, Celebes Sea, 21 July 2007, Sandy bottom with scattered rocks. Length: About 2cm. Photographer: Asther Lau.
Hope this is useful to you.
email@example.comLau, A, 2008 (Feb 8) Re: Thecacera sp. 2 from Borneo. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21347
Thanks for another record of this species.
March 6, 2007
From: Aaron Fink
Concerning message #18687:
Attached is another image of this nudibranch, seen near Misol, in the Raja Ampat of Indonesia.
Locality: Misol Besar Island, 40 ft, Indonesia, Banda, 24 October 2006, coral reef. Length: 1.5 - 2 cm. Photographer: Aaron Fink.
firstname.lastname@example.orgFink, A.S., 2007 (Mar 6) Re: Thecacera sp. 2 from NW Australia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19442
November 30, 2006
From: Mary Gudgeon
I'm trying to find an ID for a nudibranch I found on the weekend. It looks like Thecacera sp. 2, it is entirely yellow but has no black markings at all.
Locality: Exmouth Gulf, 5 metres, Western Australia, Indian Ocean, 26 November 2006, Sandy bottom. Length: 6 mm. Photographer: Mary Gudgeon.
email@example.comGudgeon, M.L., 2006 (Nov 30) Thecacera sp. 2? from NW Australia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/18687
I would tend to agree that it is Thecacera sp. 2 without any black spots. If you look at other photos of black-spotted members of this species you will see there is a very large ribbed structure at the base of each rhinophore. I suspect it is of sensory function. Your animal has also got this unusual structure which makes me think its the same species.
January 22, 2004
From: Mary Jane Adams
I photographed this nudibranch at Mabul Island off the eastern coast of Sabah, Malaysian Borneo on November 29, 2003. I believe it is Thecacera sp. 2.
The dive site, "Old Lobster Cave," is a vertical wall. It was 17 mm long and crawling over rubble at 15 meters. The
dive guides told me they see it here occasionally. This is the best "branch" site in the area.
firstname.lastname@example.orgAdams, M.J., 2004 (Jan 22) Thecacera sp. 2 from Borneo. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11981
Thanks Mary Jane
May 14, 2003
From: Haruo Kinoshita
Here is a photo of Thecacera sp. 2 to add to the Forum.
Location: Osezaki, Izu peninsula, Japan
TL: about 30mm
Photo: Haruo Kinoshita
email@example.comKinoshita, H., 2003 (May 14) Thecacera sp. 2 from Izu peninsula, Japan.. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9726
October 7, 2002
From: Marli Wakeling
Here is another Thecacera sp. 2 from Lembeh Strait. He looks upside down, but this is how the animal was positioned on the sand bottom.
Location: Pantai Parigi, Lembeh Strait, North Suluwesi, Indonesia.
Date: July, 2002
Depth: 35 feet
Length: 2 cm.
Photograph: Marli Wakeling
firstname.lastname@example.orgWakeling, M., 2002 (Oct 7) Thecacera sp. 2 from North Sulawesi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8095
August 16, 2002
From: Jim Anderson
Attached is another view of the previous animal.
Size: approx 15mm
Location: Molas reef, NE Sulawesi, Indonesia.
Date: 3 July, 2002, approx 2.45pm
JAnder4454@aol.comAnderson, J., 2002 (Aug 16) Re: Thecacera sp.2 from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7768
July 31, 2002
From: Jim Anderson
Dear Dr. Rudman,
The attached shows an animal seen recently in Sulawesi, Indonesia. It was on a sand bottom among small coral outcrops and was spotted by our guide Erwin right under our fins at the start of the dive as we hit the bottom. It appears similar to Debelius' Thecacera sp. (page 190 in my edition).
Size: approx 15mm
Location: Molas reef, NE Sulawesi.
Date: 3 July, 2002, approx 2.45pm
Water Temp: 29 deg C
email@example.comAnderson, J., 2002 (Jul 31) Thecacera sp?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7648
It certainly looks like a species of Thecacera and its orange and black colour pattern has similarities to that of Thecacera pacifica. That species, amongst other things, does not have black spots on the body and does have a black line along the outside edge each gill. Until we get some more information on its colour variation I guess we should just call it Thecacera sp. 2 as it unlike any of the few other known species in colour pattern.