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I have posted more pictures of Coryphellina rubrolineata than usual, to show some of its colour variations.
It is part of the 'Coryphellina rubrolineata look-alike' complex:
Pretty similar are:
Coryphellina sp. 01 which lacks the red/purple longitudinal lines on the body, and
Flabellina cf. rubrolineata which has smooth rhinophores, and
Unidentia sandramillenae 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.
This species was posted on 9 June 2003 at these websites as Flabellina rubrolineata (O’Donoghue, 1929) [Coryphellina],
Korshunova et al. (2017) reinstated the genus Coryphellina O'Donoghue, 1929 within the family
Flabellinidae Bergh, 1889,
and moved Flabellina rubrolineata (O’Donoghue, 1929) [Coryphellina] into the genus Coryphellina O'Donoghue, 1929.
I changed it on 12 December 2017 into Coryphellina rubrolineata O'Donoghue, 1929.
Korshunova, T.; Martynov, A.; Bakken, T.; Evertsen, J.; Fletcher, K.; Mudianta, W.; Saito, H.; Lundin, K.; Schrödl, M.; Picton, B. (2017). Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda).
ZooKeys. 717: 1-139., available online at https://doi.org/10.3897/zookeys.717.21885
More information on Coryphellina exoptata as Flabellina exoptata are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2018), published 13 December 2018, Coryphellina rubrolineata O'Donoghue, 1929
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Coryphellina_rubrolineata.htm