Chelinodura punctata from Reunion Island?
July 2, 2005
From: Philibert Bidgrain
Dear Bill,
Reunion Island sea slugs.
We find this specimen only in November to December in a permanent pool on the rocky coast at Cap "la Houssaye". The maximun length of this animal is about 25 mm and the shell length is 7 mm. I think that it's Chelidonura punctata, with its relatively large yellow-orange spots. How does it differ from C. sandrana, which is also present in our area.
Locality: Saint Paul, Reunion island. Indian Ocean. Length: max 25 mm.
Photographer: Maurice Jay
Best Regards
Philibert Bidgrain
vieoceane.free.fr/runseaslug/indexslug.htm
vieoceane@free.fr
Bidgrain, P., 2005 (Jul 2) Chelinodura punctata from Reunion Island?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14150Dear Philibert,
Yes this is Chelidonura punctata. The main colour difference with C. sandrana is that the yellow spots in that species, if present, are much smaller and are not found on the ventral surface, while in C. punctata the spots are relatively large and do occur on the sole of the foot. C. sandrana is also usually smaller. Although it can reach 20 mm in length, it is seldom more than half that size.
One interesting thing about your photo is the yellowish brown stain in the water at the posterior end of its body. This is the secretion from its yellow gland, which is a gland found only in the Aglajidae. Like the purple gland found in the Sea Hares, its function is unknown.
Best wishes,
Bill Rudman
Related messages
-
Chelidonura punctata from Mayotte
From: Fabrice Schubert, December 23, 2009 -
Chelidonura punctata from Madagascar
From: Eric van Poppel, November 16, 2009 -
Chelidonura punctata from South Africa
From: Valda Fraser, September 7, 2007 -
Breeding aggregation of Chelidonura punctata
From: Wannapa Thammasangwan, May 2, 2006 -
Chelidonura punctata from Thailand
From: Vie Panyarachun, April 18, 2006 -
Chelidonura punctata from Burma
From: Sergey Parinov, July 16, 2005 -
Chelidonura punctata in South Africa
From: Colin Ogden, June 27, 2005 -
Chelidonura punctata from Mauritius
From: Marina Poddubetskaia , November 11, 2002 -
Chelidonura punctata from Thailand
From: Erwin Koehler, January 17, 2001 -
Chelidonura punctata from the Maldives
From: Erwin Koehler, October 10, 2000