Melibe cf. megaceras Gosliner, 1987

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This species has been observed on Reunion Island


Order : Nudibranchia
Suborder : Dexiarchia
Superfamily : Tritonioidea
Family : Tethydidae
Distribution : Indo Pacific
Maximal size : 40 mm
Abundance :


Species characteristics :

Translucent with scattered brown pigment

The smooth, elongate cerata are inflated and have sometimes 23 elongate apical branches.

 

 

melibe viridis
Showing species characteristics...
Photo Sully Bachel
Reunion, 24 April 2011

Remarks :

According Nathalie Yonow " Melibe megaceras, because of the very large single papilla on the rhinophore, and the cerata dividing evenly into two or three processes at the end (in two specimens). 
    Our specimens present some differences with classical Melibe megaceras :
               - The body is not covered with uniformly scattered, elongate papillae .
               - Only a few of cerata have 23 elongate apical branches.
               - The rhinophoral sheath with a single elongated papilla on the posterior surface is not clearly observed...
So it's better to call this species Melibe cf. megaceras
    Synonymous : (according Worms)
               - No other name

Bibliographic data (for Melibe megaceras) :

Papillae are absent from the anterior border of the wide foot. The oral hood is small and bears two rows of tentacles along the anterior margin. The outer row consists of uniformly small tentacles, while the inner row has tentacles of alternating large and small sizes
    The cerata and body appear to contain zooxanthellae
    The body is covered with uniformly scattered, elongate papillae .
    The gonopore lacks associated papillae
    The smooth, elongate cerata are inflated and have 24 elongate apical branches.
    The rhinophore sheaths have a single elongate papilla on the posterior surface.

References :

Bill Rudman Seaslug site : Sea Slug Forum : Melibe megaceras

Publications :

Gosliner, T.M. (1987) Review of the nudibranch genus Melibe with description of two new species. The Veliger, 29 : 400-414
    Gosliner, T. M. and. Smith, V. G. (2003). Systematic review and phylogenetic analysis of the Nudibranch genus Melibe (Opisthobranchia:

Other photos of Melibe cf. megaceras :


Sully Bachel

Reunion, Cap La Houssaye, 18 m, 21 November 2010, size : 10-12 mm

The smooth, elongate cerata are inflated and have sometimes 23 elongate apical branches (a).


The rhinophoral sheath with a single elongated papilla (a) on the posterior surface is not clearly observed...

 

Sully Bachel

Reunion, Cap La Houssaye, 18 m, 21 November 2010, size : 10-12 mm


Sully Bachel

Reunion, 24 April 2011

The smooth, elongate cerata are inflated and have sometimes 23 elongate apical branches (a).


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