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I have posted more pictures of Flabellina rubrolineata than usual, to show some of its colour variations.
It is part of the 'Flabellina rubrolineata look-alike' complex:
Pretty similar are:
Flabellina cf. rubrolineata which has smooth rhinophores, and
Unidentia angelvaldesi which has a broad opaque white band at the smooth rhinophores,and
Flabellina sp. 05 which differs by smooth rhinophores, which are basally bluish with a white outer half, the oral tentacles are of the same colour.
Unidentia cf. angelvaldesi which lacks the purple longitudinal lines.
More information on Flabellina rubrolineata are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 3 January 2016, Flabellina rubrolineata (O’Donoghue, 1929)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Flabellina_rubrolineata.htm