Siphopteron tigrinum Gosliner, 1989

Version française...

This species has been observed on Reunion Island

Order : Cephalaspidea
Superfamily : Philinoidea
Family : Gastropteridae
Distribution : Tropical Indo-West Pacific
Maximal size : 3-4 mm
Abundance : Seldom if ever on the reef flat zone

Species characteristics :

They are usually pigmented with a ground color of bright orange to yellow, overlain with narrow, elongated patches of bluish purple

Presence of black pigment on the siphon and flagellum

siphopteron tigrinum
Showing species characteristics...

Photo Christophe Cadet
Reunion, Trou d'eau lagoon, less 1 m, 27 September 2010, size : 3-4 mm

See more about : Sightening and mating periods

Remarks :

Identification confirmed by Terry Gosliner
    According to Terry Gosliner :" The specimen is Siphopteron tigrinum.  That is very interesting that both S. michaeli and S. tigrinum, which are very similar have now both been found from La Reunion. They are very similar except on has lines (S. tigrinum) and the other has spots (S. michaeli )."
    Rudman feels that S. tigrinum must be a colour form of S. citrinum
    Synonymous : (according Worms)
               - No other name

Bibliographic data :

Nothing is known about tits diet
    The presence of a siphon is not in itself a character of Siphopteron. The main characters of Siphopteron are the "prominent crest" along the midline of the siphon, a reduced number of lateral teeth in the radula and some penial structures.
    Found on the undersurface of coral rubble in shallow water of 1-10 m depth

References :

Bill Rudman Seaslug site : Sea Slug Forum : Siphopteron tigrinum
   Nudipixel Siphopteron tigrinum

Publications :

Gosliner, T.M. (1989) Revision of the Gastropteridae (Opisthobranchia: Cephalaspidea) with descriptions of a new genus and six new species. The Veliger , 32(4): 333-381. (Figs 1-32)

Other photos of Siphopteron tigrinum :


Sebastien Vasquez

Reunion, Etang Salé on the rocky coast, less 1 m, 9 December 2015



Chritophe Cadet

Reunion, Trou d'eau lagoon, less 1 m, 7 October 2010, size : 3-4 mm

 More photos from Indian Ocean