Coryphellina rubrolineata  O'Donoghue, 1929

Click the thumbnail photos to enhance!

There are many colour variations within Coryphellina rubrolineata complex which have usually has red longitudinal lines on its body, one down the centre of its back and one down each side of the body just below the cerata, but these lines can sometimes be broken. The rhinophores are papillate, often with a reddish apex.
Korshunova et al. (2017) reinstated the genus Coryphellina O'Donoghue, 1929 within the family Flabellinidae  Bergh, 1889. and had on Fig. 39 as Coryphellina O'Donoghue, 1929 a pale pink specimen with pale pink cerata, which have a diffuse red subapical ring, and below some whitish pigmen, the apices are yellowish/pink.
This species was described by O'Donoghue (1929) from the Suez Canal, Red Sea.
There are several pictures from Egypt, Northern Red Sea #1, #2, #3, #4, and the Lessepsian Immigrant in the Mediterrean Sea: Turkey, North Cyprus, and from Northwestern Indian Ocean United Arab Emirates #1, #2, #3, online. They all look the same, but different to Fig. 39!
I disagree with the decision of Korshunova et al. (2017) that the specimen of Fig. 39 from Vietnam, Western Pacific Ocean is the
'real' Coryphellina rubrolineata  O'Donoghue, 1929! But I keep it with that name until a correction will be published.
Pretty similar are:
Coryphellina sp. 01 which lacks the red/purple longitudinal lines on the body, and
Coryphellina sp. 03 which which differs by the colour of the cerata,
Coryphellina sp. 04 which which differs by the colour of the rhinophores,
Unidentia sp. 02  Genus: Millen & Hermosillo, 2012 which has smooth rhinophores, and
Unidentia sandramillenae which has a broad opaque white band at the smooth rhinophores,and
Unidentia sp. 03  Genus: Millen & Hermosillo, 2012 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.
O’Donoghue CH (1929) Report on the Opisthobranchia. XXXVIII. Zoological results of the Cambridge Expedition to the Suez Canal, 1924.
Transactions of the Zoological Society of London 22: 713–841. https://doi.org/10.1111/j.1096-3642.1929.tb00212.x
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


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