Hypselodoris tricolor or H. bilineata from Turkey

July 26, 2003
From: Ferda Buyukbaykal

Hello Bill,
I found a new nudibranch at Ayvalik [Aegean Sea coast, Turkey] this weekend [July 2003].
It was 28-30 mt deep, algae and stone bottom and size 5-6 cm.

I think about its name is Hypselodoris tricolor or H. midatlantica. Which is correct.?
Ferda Buyukbaykal

ferdabbaykal@isnet.net.tr

Buyukbaykal, F., 2003 (Jul 26) Hypselodoris tricolor or H. bilineata from Turkey. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10540

Dear Ferda,
I guess this is what I am calling Hypselodoris tricolor [see discussion about whether we should use H. midatlantica instead]. However the form of H. tricolor in which the median yellow line appears to be two lines fused together looks remarkably like some specimens of Hypselodoris bilineata. The only external difference I can see is that in H. bilineata there are yellow markings on the posterior edge of the rhinophore pocket and in a line up the rhinophore club. In your bottom right photo there does seem to be some yellow on the back of the rhinophore. Could you have a look at your photos and see if any of them shows some yellow markings on the rhinophores? If they do then this may be H. bilineata.
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Jul 26). Comment on Hypselodoris tricolor or H. bilineata from Turkey by Ferda Buyukbaykal. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10540

Factsheet

Hypselodoris tricolor

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