Amphorina linensis

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

Amphorina linensis by Carlos Fernández-Cid

Taxonomy
 

Superdomain

Biota  

 

Kingdom

Animalia  

 

Phylum

Mollusca  

 

Class

Gastropoda  

 

Subclass

Heterobranchia  

 

Infraclass

Euthyneura  

 

Subterclass

Ringipleura  

 

Superorder

Nudipleura  

 

Order

Nudibranchia  

 

Suborder

Cladobranchia  

 

Superfamily

Fionoidea  

 

Family

Eubranchidae  

 

Genus

Amphorina  

 

Species

Amphorina linensis  (Garcia-Gomez, Cervera & Garcia, 1990)

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

  • 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.

Description
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.

Biology
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.

Etymology

  • 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.

Distribution
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
Sources:
: OBIS
: GROC 2010-2011
: Enric Madrenas
: João Pedro Silva
: Bernard Picton
: GBIF.ORG
: OPK
: VIMAR
: Manuel Ballesteros.
: M@re Nostrum
: Altres fonts
: Marine Regions

References for the species: Amphorina linensis

Abundance

    Western Mediterranean:1 out of 5 stars
    Eastern Mediterranean:1 out of 5 stars
    Atlantic Ocean:1 out of 5 stars
Month

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

More pictures

Bibliography

Further reading

Cite this article as:

Ballesteros, Manuel, Enric Madrenas, Miquel Pontes (2021) "Amphorina linensis" in OPK-Opistobranquis. Published: 05/10/2013. Accessed: 26/10/2021. Available at (https://opistobranquis.info/en/YgJCn)

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