Tambja tentaculata from Borneo
October 10, 2005
From: Sylvain Le Bris
Hi,
Can you help me to identify this nudibranch ?
Locality: Mabul Island, Borneo, Malaysia. Depth: 20 m. Length: 6 cm. 09 September 2005. Photographer: Sylvain Le Bris
Sylvain Le Bris
sylvain.lebris@freesbee.fr
Le Bris, S., 2005 (Oct 10) Tambja tentaculata from Borneo. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14883
Dear Sylvain,
I think this is the recently describe Tambja tentaculata. In general the colour pattern is the same and it is quite large oral tentacles. I maybe wrong however because your animal lacks a ventral yellow line on the mantle and has a greenish white V shaped mark on the head which I haven't seen in photos of T. tentaculata. However your animal may have a developmental abnormality. If you look just behind the point of the V, there is a dark oval patch which an unpigmented region above the eye, quite often seen in this group. In your animal there seems to be only one of these and its almost in the midline. Normally there are two, one behind each rhinophore. If I am right it looks like your animal is 'one-eyed' and unusually narrow-bodied, which could explain the absent median line.
Best wishes,
Bill Rudman
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