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This species has been observed on Réunion and Madagascar Islands

Order : Nudibranchia Suborder : Dexiarchia Superfamily : Aeolidioidea Family : Facelinidae Distribution : Throughout the tropical Indo-West Pacific Maximal size : 15 mm Abundance : Seldom if ever on the fore reef zone and the lagoon Species characteristics : Body orange to reddish with a line of opaque white patches on the medial portion of the notum Rhinophores translucent white with 2-3 oblique annulae Ceratal base with dark brown to black pigment and blue and pale yellow to white subapical bands
	Showing species characteristics...	Photo Monica Bachel Reunion, Le Barachois, 15 m, 10 February 2013, size : 15 mm

See more about : Sightening and mating periods

Remarks :

Identification proposed by Nathalie Yonow, Richard Willan and Marina Poddubetskaia
    According Richard Willan " I first encountered this aeolid in the photo from La Reunion in Fiji in 1987. As you have noticed, its rhinophores are completely different to those of Phidiana indica . [I use the genus Phidiana for indica et al. following Miller's papers]. The one with the plates on the rhinophores in your photo is undescribed."
    Some specialist like Rudman, Willan, Debelius use the genus Phidiana for indica following Miller's papers, other like Gosliner use the genus Caloria

Bibliographic data :

This species looks like Caloria indica and Caloria sp. 2 :

	Caloria indica	Facelinid sp. 5	Caloria sp. 2
Rhinophores structure	Smooth and slender rhinophores	Rhinophores translucent white with 2-3 oblique annulae	Smooth and slender rhinophores
Body coloration pattern	The translucent to translucent-orange body has a median longitudinal white line which branchs between the rhinophores, running to the oral tentacles of the orange head	Body orange to reddish with a line of opaque white patches on the medial portion of the notum	Body entirely pale translucent orange.

References :

Nudipixel Phidiana sp

Other photos of Facelinid sp. 5 :

Barbara Bini Madagascar, Nosy bé, 16 m, size : 5 mm

Reunion, Etang salé lagoon, less 1 m, 12 February 2017, size : 15 mm	Alexandre laporte

Kévin Bourdon Reunion, Cap La Houssaye, 16 m, 29 June 2013, size : 3-4 mm

Sully Bachel Reunion, Les Avirons, 17 m, 28 November 2010, size : 15 mm   Rhinophores translucent white with 2-3 oblique annulae

Philibert Bidgrain Reunion, Saint Pierre lagoon, less 1 m, 28 February 2010, size : 10-12 mm Body orange to reddish with a line of opaque white patches on the medial portion of the notum