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This species is most likely a colour form of Aegires sp. 04, that is of Aegires sp. 4 in IPN at page 144.
I will keep them seperate until the dust settles.
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs.
Sea Challengers Natural History Books. Gig Harbor, Washington. 426pp.
How to cite:
Köhler, E. (2017), published 17 June 2017, Aegires sp. 06 Genus: Lovén, 1844
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Aegires_sp_06.htm