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This species has been observed on Madagascar Island

Order : Nudibranchia Suborder : Euctenidiacea Superfamily : Phyllidioidea Family : Phyllidiidae Distribution : Madagascar, Maximal size : 12 mm Abundance : Species characteristics : Pinkish white with longitudinal black lines and a bright yellow orange marginal band on the anterior end. Some tubercles capped with orange Rhinophores orange
	Showing species characteristics...	Photo Alain Benoît Rassat Madagascar, Nosy bé, 18 August 2015

Remarks :

Looks like Phyllidia sp. 5 from Madagascar in NSSI, Nudibranch & Sea Slug Identification, Indo-Pacific, Gosliner, Valdés & Behrens, 2015
    It could be also a non described variant of P. exquisita...

Bibliographic data :

Similar to Phyllidia exquisita and Phyllidia alyta but :
               - P. alyta hasn't bright yellow orange marginal band on the anterior end.
               - P exquisita has numerous transverse lateral black lines

Other photos of Phyllidia sp. 1 :

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