Pseudoceros cf confusus    Newman & Cannon,1995

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


Order : Polycladida
Suborder : Cotylea
Superfamily : Pseudocerotoidea
Family : Pseudocerotidae
Distribution : Mayotte and Reunion Islands
Maximal size :
Abundance :


Species characteristics :

Background body colour cream-white with three marginal bands : inner band narrow black, then orange and transludide white or cream

Presence of a black external marginal band rather than cream on the pseudotentacles

Absence of white median longitudinal stripe.

Presence in some specimens of irregular white raised spots

 

Pseudoceros cf confusus
Showing species characteristics...

Photo Eva Fontaine
Mayotte, mtsanga Mboueanatsa, less 1 m, 4 August 2008, size : 10 mm

Remarks :

These specimens present some differences with Pseudoceros confusus, it could be undescribed variations of this species or a new species, so for the moment we called this "species" Pseudoceros cf confusus

Bibliographic data :

Pseudotentacles simple folds
   Easely confused with : Pseudoceros confusus, Pseudoceros bimarginatus, Pseudoceros contrarius and Pseudoceros intermittus but there are obvious differences

 

P. cf confusus

P. confusus

P. bimarginatus

P. intermittus

P. contrarius

Marginal band coloration from inside to outside

Black, orange and white or cream

(White), black, orange, black and yellow or white

White, orange, black and yellow

Orange, black and yellow

Yellow, black and orange

Median longitudinal stripe

No

White

Yellow

 

No black triangle between the pseudotentacles

Black triangle with a white spot between the pseudotentacles

Black triangle between the pseudotentacles

Habitat : Found under rubble on the reef crest

References :

Publications :

Newman, L.J. & Cannon, L.R.G. (1995). Colour pattern variation in the tropical flatworm, Pseudoceros (Platyhelminthes, Polycladida). Raffles Bulletin of Zoology 43: 435–446
    Newman, L.J. & Cannon, L.R.G. (2003). Marine Flatworms: the world of Polyclads. CSIRO Publishing : Melbourne 112

Other photos of Pseudoceros cf confusus :


 

 

Matthias Deuss

Mayotte, 4 August 2009

 


 

 

Christophe Cadet

Reunion, Etang salé on the rocky coast, less 1 m, 9 February 2010.

Presence in some specimens of numerous irregular white raised spots (a)

 


 

 

Christophe Cadet

Reunion, Etang salé on the rocky coast, less 1 m, 28 September 2009.

 

 


Eva Fontaine

Mayotte, Mbouanatsa, less 1 m, 29 July 2010, size : 13-15 mm

Presence in some specimens of numerous irregular white raised spots


 

 

Alexandre Laporte

Madagascar, Antafondro Lodge, Sainte Marie, less 1 m, 1 September 2017,

 

 


 More photos from Indian Ocean

Mayotte, Pseudoceros cf confusus without white raised spot, at Mbouanatsa, by Philibert Bidgrain