Pseudobiceros gloriosus   Newman and Cannon 1994

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This species has been observed on Reunion, Mayotte and Madagascar Islands

Order : Polycladida
Suborder : Cotylea
Superfamily : Pseudocerotoidea
Family : Pseudocerotidae
Distribution : Indo West Pacific
Maximal size : 90 mm
Abundance :

Species characteristics :

Background body colour black with three marginal bands inner band orange then pink band and rim dark burgundy to purple



Pseudobiceros gloriosus
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Photo Marina Poddubetskaia
Mayotte, Passe en S, buoy n° 6-7, 17 m, 15 November 2003, size : 70 mm

Remarks :

In all our specimens, the pseudotentacles margin lacks the black rim

Bibliographic data :

Pseudotentacles square ruffled
   The marginal band does not continue across the pseudotentacles
   The colour pattern is probably warning colouration (aposematic)
   Ventral side is purple with the same margin as the back
   Habitat : Found under ledges on the reef slope
   Ethymology : gloriosus = glorious, for its magnificient colour pattern
   This species looks like Pseudobiceros hymanae but P. hymanae has a wide orange marginal band and black rim, but without the pink band

References :

Discover life : Pseudobiceros gloriosus
   Marine flatworms of the world : Pseudobiceros gloriosus

Publications :

Newman, L.J. & Cannon, L.R.G. (1994). Biodiversity of Australian polyclad flatworms. Memoirs of the Queensland Museum 36: 159163
    Newman, L.J. & Cannon, L.R.G. (1997). Nine new Pseudobiceros (Platyhelminthes, Polycladida, Pseudocerotidae) from the Indo-Pacific. The Raffles Bulletin of Zoology 45: 341–368
    Newman, L.J. & Cannon, L.R.G. (2003). Marine Flatworms: the world of Polyclads. CSIRO Publishing : Melbourne 112 p

Other photos of Pseudobiceros gloriosus :




Matthias Deuss

Mayotte, 29 December 2009

Pierre Navorro

Reunion, Vallée aux mérous, Saint Gilles, 40 m, 9 September 2010, size : 100 mm

Pseudotentacles (a) square ruffled

Florence Trentin

Mohéli, Ouénéfou, 22 December 2004



Alain-Benoît Rassat

Madagascar, Olaf, Nosy bé, 22 August 2013, size : 70 mm


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