Jorunna parva (Baba, 1938) [Thordisa]
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Jorunna parva is characterized by its whitish-tan to orange body colour, decorated with black tipped caryophyllidia. The rhinophore and gill colour
varies from pale yellow to black. Opaque white mantle glands are present along the edges of the mantle.
There are many pictures of Jorunna parva at the Sea-Slug Forum of specimens with a longitudinal medion region without any
Jorunnasp. 05 Genus: Bergh, 1876might be a strange variant.
Pretty similar is Crimora lutea which can have the same colour variation (orange body with black palillae),
and the rhinophore and gill colour also varies from pale yellow to black.
More information on Jorunna parva are ont
Bill Rudman's Sea-Slug Forum!