Hypselodoris bertschi Gosliner & Johnson, 1999

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This species has been observed on Reunion  Island

Order : Nudibranchia
Suborder : Euctenidiacea
Superfamily : Doridoidea
Family : Chromodorididae
Distribution : Haai and reunion Island
Maximal size : 3 mm
Abundance : Frequently on the fore reef zone

This dorid is translucent-white with elongate blue-black spots arranged in longitudinal rows. Thin, white longitudinal streaks run between the lines of blue-black spots.

The rhinophores are white with a single gold or orange medial band.

Gill coloration appears to be variable, either white with an orange rachis or white with orange tips and an orange base.


hypselodoris bertschi
Showing species characteristics...
Photo Philibert Bidgrain
Reunion, "Bassin nord de Grande ravine" at Trois Bassins, 1 m, 27 October 2006

Remarks :

We found in our country 4 species derived from Hypselodoris maculosa complex :    H. juniperaeH. maculosa and  H. yarae

Bibliographic data :

The mantle often has a broken, yellow-orange marginal band in larger individuals.

References :

Bill Rudman Seaslug site : Sea Slug Forum : Hypselodoris bertschi
   Seaslug of Hawai Hypselodoris bertschi

Publications :

Gosliner, T. M.; Johnson, R. F. (1999). Phylogeny of the monophyletic genus Hypselodoris (Molllusca: Nudibranchia: Chromodorididae) from the Indo-Pacific, with the description of twelve new species. Zoological Journal of the Linnean Society. 125, 1-114

Other photos of Hypselodoris bertschi :

Emmanuel Eby

Locality : Saint Leu

Length : Less than 10 mm

Depth : 15-20 m

Date : 25 September 2004

Remarks :

Emmanuel Eby

Locality : Saint leu

Length :

Depth :

Date : 14 october 2005

Remarks :

Christophe Cadet

Locality : on the rocky coast

Length : 10 mm

Depth : less 1 m

Date : 1 September 2009

Remarks :

Raphaël Roland Gosselin

Reunion, Les kiosques, Saint Leu, 5 March 2009, size : 3mm

A juvenile form, only 3 mm...

Presence of fine white longitudinal lines, and purple spots...

Only one orange band on the rhinophore.

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