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Pretty similar are
Trinchesia sibogae, which has different rhinophores: purple, slender smooth, and
Coryphellina rubrolineata which differs by red/purple longitudinal lines on the body.
This species was posted on 24 June 2004 at these websites as Flabellina sp. A Genus: Voigt, 1834, and changed on 23 August 2011 into
Flabellina sp. 01 Genus: Voigt, 1834.
For some genera, such as Trinchesia was the alphabet almost through. I had to change the distinguishing alphabetic character into a number. I hade chosen 2-digit numbers, even though '01' looks a little bit stupid, and now is only the genus italic written.
Korshunova et al. (2017) reinstated the genus Coryphellina O'Donoghue, 1929 within the family Flabellinidae Bergh, 1889.
Dr. Richard C. Willan suggusted to move Flabellina sp. 01 Genus: Voigt, 1834 into the genus Coryphellina O'Donoghue, 1929.
I changed it on 19 December 2017 into Coryphellina sp. 01 Genus: 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 sp. 01 as Flabellina sp. 1 are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2018), published 20 December 2018, Coryphellina sp. 01 Genus: O'Donoghue, 1929
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Coryphellina_sp_01.htm