Petalifera cf. ramosa  Baba, 1959

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cf. is an abbreviation from a Latin word (confer) and means 'refer to' or 'compare with', here it means it could possibly be Petalifera ramosa or perhaps something closely related, or at least similar in appearance.
Petalifera cf. ramosa is characterized by a green body colour with minute brownish spots, and white branched papillae. There are also papillae on the rhinophores and on the oral tentacles.
This species is as Petalifera cf. edmundsi (Bebbington, 1974) in IPN at page 61.
All I can find on Petalifera edmundsi at the web is: it was placed by Bebbington (1974) in the genus Phyllaplysia,
there is no picture nor decription of it for free, so I can't tell how it differs, and I don't even know who moved it into the genus Petalifera.
I will keep it for now as Petalifera cf. ramosa. It differs from Petalifera ramosa by the lack of the rounded tubercles with white basal ocelli.
Pretty similar is Stylocheilus longicauda which differs by the bright yellowish-green body colour, the long tail, and blue spots with orange-red ocelli.
Bebbington, A. (1974), Aplysiid species from East Africa with notes on the Indian Ocean Aplysiida (Gastropoda: Opisthobranchia).
Zoological Journal of the Linnean Society, 54: 63–99. doi: 10.1111/j.1096-3642.1974.tb00793.x
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs.
Sea Challengers Natural History Books. Gig Harbor, Washington. 426 pp.
More information on Petalifera ramosa are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2018), published 6 March 2018, Petalifera cf. ramosa  Baba, 1959
available from https://www.Philippine-Sea-Slugs.com/Aplysiida/Petalifera_ramosa_cf.htm