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It is characterized by its pale tan background colour . The velar tentacles are short and branched. Because of the angle of the above picture is it impossible to say something on the area between the gills, are there tubercles or a is there a reticulate pattern?
Pretty similar with a pale tan background colour or possibly the same species are:
Marionia sp. 10 Genus: Vayssière, 1877, which has reticulate pattern of thin whitish-tan lines,
Marionia sp. 13 Genus: Vayssière, 1877, which has a diffuse whitish patch near the base of the cerata.
How to cite:
Köhler, E. (2017), published 8 February 2017, Marionia sp. 19 Genus: Vayssière, 1877
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Marionia_sp_19.htm