Halgerda toliara? from Sth Africa
February 17, 2006
From: Colin Ogden
Hi Bill,
Am I right in the ID of this animal as Halgerd toliara. I found him in a cave, so maybe the lack of light as well as the diet might affect his colouration.
Locality: Sodwana Bay, 15m, South Africa, Indian, 9 Feb 2006, coral reef
Length: 30 mm. Photographer: Colin Ogden
Regards
Colin
scubaco@iafrica.com
Ogden C. M., 2006 (Feb 17) Halgerda toliara? from Sth Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15818Dear Colin,
I'm afraid I have great difficulty in sounding authoritative over the identity of species of Halgerda. Sometimes I think there is a pattern emrging and other times I despair. I haven't seen a specimen of H. toliara which has a yellow background colour like this, and I haven't seen a Halgerda which changes from yelllow to white like this.
It is possible that it is H. toliara, certainly the raised tubercles around the mantle edge seem characteristic, but I suspect we are just going to have to wait until more is known about colour variability within populations.
Best wishes,
Bill Rudman
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