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I misidentified some of the juvenile specimens and posted them on 18 December 2003 as Dermatobranchus sp. A.
More information on Armina semperi are on Bill Rudman's Sea Slug Forum!
How to cite:
Köhler, E. (2016), published 30 July 2016, Armina semperi (Bergh, 1861)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Armina_semperi.htm