Amphorina linensis

Amphorina linensis (García-Gómez, Cervera & García, 1990)

Amphorina linensis by Carlos Fernández-Cid










































Amphorina linensis  (García-Gómez, Cervera & F. J. Garcia, 1990)

 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 1424910).

  • Eubranchus linensis Garcia-Gomez, Cervera & Garcia, 1990: 585–593.
  • Amphorina linensis (Garcia-Gomez, Cervera & Garcia, 1990): Martynov 1998: 775.
  • Eubranchus tricolor: sensu Trainito & Doneddu, 2014: 118, non Forbes, 1838.
  • Eubranchus sp. 1: Prkić et al., 2018: 353–357.

Adult specimens can reach 30mm in length. Body narrow, translucent whitish or yellowish, but never with blackish non transparent pigmentation nor with homogeneous orange coloration. Sometimes with small white scores all over the body, foot and cerata. Some specimens have very distinctive reddish orange dorsal spots that never cover the tail. Adriatic specimens are often smaller and show a light blue hue covering cerata, rhinophores and oral tentacles giving the animal a bluish appearance; so far no specimens with red dorsal spots have been found in the Adriatic. Cerata of the color of the body, with the progressively whitish ends, never with a subapical pink ring. Cerata are tappered and quite inflated near the base, the largest in central position and arranged in groups. Inner digestive gland coloured gray or brown, visible by transparency. Smooth, relatively long rhinophores of the body color, commonly covered with relatively dense white dots with small insertions of yellowish brown pigment in some specimens, but without the formation of actual rings. Smooth oral tentacles, much shorter than the rhinophores, but similarly coloured. Slightly visible eyes at the base of the rhinophores. White translucent foot, quite wide, often with a distinct, sometimes dotted white line along the foot edge, without propodial palps, finished in a tappered tail.

It feeds on hydrarians of the Nemertesia, Obelia and Tubularia genera. Sweden specimens have always been found living below the halocline. Mediterranean specimens have been traditionally confused with the Atlantic species Eubranchus tricolor but they have obvious morphological differences. Recent work by Korshunova et al (2020) has allowed to clarify this situation.


  • Linensis. From “linense”, Spanish denomination to the inhabitants of the village of La Línea de La Concepción, Cádiz, Spain, near the Spanish border with Gibraltar.

Basically present in the Eastern Atlantic, from Gibraltar to Sweden and Southwest Norway, and in the Mediterranean, where it is reported from Spain, France and Italy, also from the Adriatic. In the Iberian Peninsula it has only been reported in Catalonia, in the rocky bars off Mataró (Barcelona).

Known georeferenced records of the species: Amphorina linensis
: GROC 2010-2011
: Enric Madrenas
: João Pedro Silva
: Bernard Picton
: Manuel Ballesteros.
: M@re Nostrum
: Altres fonts
: Marine Regions


    Western Mediterranean: ★☆☆☆☆
    Eastern Mediterranean: ★☆☆☆☆
    Atlantic Ocean: ★☆☆☆☆

This chart displays the monthly observation probability for Amphorina linensis based on our own records.



More pictures


    Ballesteros M, Madrenas E, Pontes M. 2024. OPK - Opistobranquis. Available from
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    Calado G, Urgorri V, Gaspar R, et al. 1999. Catálogo de los moluscos opistobranquios bentónicos de las costas de Setúbal-Espichel (Portugal). Nova Acta Científica Compostelana (Bioloxía) 9: 285-294.
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    García-Gómez JC, Cervera JL, García FJ. 1990. Description of Eubranchus linensis new species (Nudibranchia), with remarks on diauly in nudibranchs. Journal of Molluscan Studies 56: 585-593.
    García-Gómez JC, Cervera JL, García FJ, et al. 1991. Resultados de la campaña internacional de biología marina “Algarve 88”: moluscos opistobranquios. Bollettino Malacologico 27 (5-9): 125-138.
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    Bibliography based on the works by Steve Long, 2006. Bibliography of Opisthobranchia 1554-2000 and Gary McDonald, 2009. Bibliographia Nudibranchia, with later updates from other resources.

Further reading

Cite this article as:

Ballesteros, M., Madrenas, E. & Pontes, M. (2023) "Amphorina linensis" in OPK-Opistobranquis. Published: 05/10/2013. Accessed: 14/04/2024. Available at (

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