February 11, 2001
From: Juan Lucas Cervera
Alma's photos which you thought might be Tambja ceutae belong to Roboastra europaea. This species has two colour forms, one light (more yellowish/orange) and other darker. These photos show the darker form. Her other photos were of the lighter form.
The most relevant external feature of Tambja ceutae is the presence of pointed tubercles (variable in size) along the edge of the notum, moreover on the back of the tail.
Here is a photo of a juvenile of this species, from the Strait of Gibraltar. The tubercles in juveniles are more conspicuous.
email@example.comCervera, J.L., 2001 (Feb 11) Re: Tambja ceutae from Spain. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3778
Thanks for sorting this out. I decided with the blue chromodorids to always check with a Mediterranean expert first before posting species from that region, but Garcia & Ortea's two large colour photos in their original description look remarkably like Alma's photos. Do the lines in T. ceutae change to a creamy yellow in adult specimens?
I have fixed the pages for these two species