Re: Flabellina ischitana

July 9, 1999
From: Juan Lucas Cervera

Dear Bill:

I'm absolutely in agreement of your comments to Erwin. My comments are not a criticism! I only wished to claim the possibility of an overlooked undescribed violet Flabellina in the Mediterranean. In fact, very recently, two other violet species of this genus has been described by Ortea & Espinosa (1998) from Cape Vert Islands (Eastern Atlantic), F. arveloi and F. alternata, and are different from the F. affinis from Ghana.

Two good photographs of F. affinis and F. ischitana appear in the "Atlas of Mediterranean Nudibranchs", and that of F. ischitana seems to me different from Erwin's. In this book, when you read "the colour of the cerata is red", this refers to the colour of the digestive gland; and when you read "the tips of the cerata are white", this refers to the subapical opaque white band (ring) at the upper part of the cerata. The true tips are translucent whitish that allow us to see the cnidosacs, also whitish.
In my opinion, it would be interesting to check specimens with colouration like those of Erwin's photographs. Only to be sure.
The Daniel L. Geiger's photos of F. affinis are very good and permit to identify well the species externally.

Regards,
Lucas.

PS. It was Cesar Megina and not me who taken the Flabellina ischitana photo.

Lucas.

lucas.cervera@uca.es

Cervera, J.L., 1999 (Jul 9) Re: Flabellina ischitana. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1039

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Flabellina ischitana

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