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Chromodoris geminus which has four colour bands around the mantle edge: an outermost white, then translucent greyish purple, then white, then yellow. It has a wide mantle overlap.
Goniobranchus kuniei which has a broad purple line at the border of the mantle and a wide mantle overlap.
Goniobranchus leopardus which has leopard-like multiple spots, or marks, forming a hollow squarea, distinct purple line at the border of the mantle and a wide mantle overlap.
This species was posted on 25 July 2003 at these websites as Risbecia tryoni (Garrett, 1873) [Goniodoris],
R.F. Johnson & Gosliner (2012) moved it to the genus Hypselodoris Stimpson, 1855.
Rebecca Fay Johnson & Terrence M. Gosliner. 2012. Traditional Taxonomic Groupings Mask Evolutionary History:
A Molecular Phylogeny and New Classification of the Chromodorid Nudibranchs.
online at http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0033479
More information on Hypselodoris tryoni as Risbecia tryoni are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 2 September 2017, Hypselodoris tryoni (Garrett, 1873)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Hypselodoris_tryoni.htm