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Very similar are:
Discodorididae sp. 07 which differs by white tips on the rhinophores and has a middorsal ridge
Discodorididae sp. 13 which differs by irregular white patches, and by a series of middorsal humbs.
Pretty similare is Platydoris sp. 1 in IPN, page 195, which differs by the shape of the body and by white rachises of the gills.
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs.
Sea Challengers Natural History Books. Gig Harbor, Washington. 426pp.
Dr. Alicia Hermosillo-González labels it "Doris rojo8.jpg".
How to cite:
Köhler, E. (2017), published 23 March 2017, Discodorididae sp. 17 Family: Bergh, 1891
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Discodorididae_sp_17.htm