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Pretty similar is Hypselodoris purpureomaculosa which differs by its burgundy to purple spots, by its white body, and has an orange mantle margin which is not scalloped.
This species was posted on 4 January 2011 at these websites as Hypselodoris iacula Gosliner & Johnson, 1999.
It is a convention in malacology to use the first initials of authors with the same family name to distinguish between them,
that is R.F. Johnson for Rebecca Fay Johnson and S. Johnson for Scott Johnson. I changed the authority on 8 May 2016.
More information on Hypselodoris iacula are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 8 May 2016, Hypselodoris iacula Gosliner & R.F. Johnson, 1999
available from http://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Hypselodoris_iacula.htm