Hypselodoris sagamiensis (Baba, 1949) [Glossodoris]

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Hypselodoris sagamiensis is characterized by a translucent mantle, sometimes with much of the mantle covered with opaque white. In other cases there is little opaque white pigmentation on the mantle except for low raised pustules in the central region, and a broad irregularly shaped band around the margin. There are smaller blue spots scattered over the mantle and some larger diffuse black patches forming a band around the mantle just at the outer edge of the visceral mass. At the edge of the mantle is a band of purple, usually entire around the anterior end but breaking into a series of patches along the sides. Inside the purple margin is a broken band of ornage-yellow. The rhinophore stalk is white and the club red. The simple gills are translucent white with orange-red edging.
There are pictures of very similar specimens from Japan on the Sea-Slug Forum, I am confident that my ID is correct.
The specimen of the pictures #5 and #6 had been misidentified by Dr. Richard. C. Willan as Hypselodoris placida (Baba, 1949) [Glossodoris] and were posted with this name at these websites on 3 April 2019.
Andrey Ryanskiy wrote (pers. comment) that H. placida has no blue pigment at the mantle margin and identified it as
juvenile Hypselodoris sagamiensis (Baba, 1949) [Glossodoris]. I changed it on 18 June 2020.
More information on Hypselodoris sagamiensis are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2020), published 18 June 2020, Hypselodoris sagamiensis (Baba, 1949)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Hypselodoris_sagamiensis.htm


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