Favorinus blianus - first record from W. Atlantic
June 21, 2001
From: Paul Young
We're not sure if this is another Flabellina salmonacea. It was photographed at Fort Wetherhill, Jamestown, Rhode Island. [USA, Atlantic coast].
The animal is 2-3 cm long.
Paul Young
young@underwater.org
Young, P., 2001 (Jun 21) Favorinus blianus - first record from W. Atlantic. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4624Dear Paul,
When I first saw this photo the white Y-shaped pattern on the head reminded me of Flabellina lineata which is only known from the northeastern Atlantic. However after a couple of days thinking about it I am pretty sure it is another species, Favorinus blianus which as far as I know is another species which has only been found in the northeastern Atlantic.
The only thing I am not quite sure of is the shape of the rhinophores, which in F. blianus have three large swollen rings. The shape is not clear in your photo [which I've enlarged alongside] but there does appear to be a large swelling below the white tips which could be the rings contracted into a 'lump'. If you have another photo which shows the rhinophores more clearly it would be very welcome.
I am very glad I asked you to share some of your photos with us. They are certainly proving to be very interesting.
best wishes,
Bill Rudman
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