Trapania lineata

Trapania lineata (Haefelfinger, 1960)

Trapania lineata by Enric Madrenas

Taxonomy
 

Superdomain

Biota  

 

Kingdom

Animalia  

 

Phylum

Mollusca  

 

Class

Gastropoda  

 

Subclass

Heterobranchia  

 

Infraclass

Euthyneura  

 

Subterclass

Ringipleura  

 

Superorder

Nudipleura  

 

Order

Nudibranchia  

 

Suborder

Doridina  

 

Infraorder

Doridoidei  

 

Superfamily

Onchidoridoidea  

 

Family

Goniodorididae  

 

Genus

Trapania  

 

Species

Trapania lineata  Haefelfinger, 1960

 
 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 140043).
Description
This sea slug typically measures between 10 mm and 15 mm in length. The whitish body is plump in its central area, more or less dark brown in the center deppending if /what it has been eating, and decorated with iridescent white lines that run along the back, sides of the body, head, oral tentacles, rhinophores, tail and, in certain cases, also along the axis of the branchial leaves. There is a couple of pallial tentaculiform processes, directed backwards, at the sides of the rhinophores and two processes more at the sides of the gill. The oral tentacles are usually pigmented yellow-orange, as are the tips of the rhinophores and gill leaves, propodial palps, the anterior and posterior pallial fingerlike processes and the end of the tail. The rhinophores are long and wide, with the basal portion without lamellae and of the same colour of the body, and the laminar portion coloured yellow. The gill consists of three gill leaves, one in central position and two on the sides, they have a wide rachis and are tripinnate. Among the gill leaves there are usually found copepod ectoparasites. The light beige coloured anal papilla is located right behind the gill leaves. The foot is relatively narrow and of the same color of the body, in its front side there are two backwards directed finger-like propodial palps, pigmented yellow in its distal half.

Biology
This is not a common species and usually lives in dimly lit rocky walls with an abundance of algae, sponges and hydroids, also inside caves. It feeds on entoprocta (Kamptozoa) of the genus Loxosomella (Cattaneo-Vietti et al. 1990). No other details of its biology are known.

Etymology

  • Trapania. Bernard Picton considers this derives from Greek Drepane meaning “sickle” or “reaping hook”, presumably referred to the appendixes located in the base of rhinophores and gills in the genus Trapania.
  • Lineata. From Latín “lineatus”, with lines, lined.

Distribution
This species is, so far, endemic of the Mediterranean Sea. It has been reported on the Mediterranean coast of France, Sardinia, Turkey and from the Strait of Gibraltar in all the Iberian Mediterranean coast and the Balearic Islands (Cervera et al. 2004). In the Catalan coast it has been reported or observed in cala Es Caials, Cadaqués, L’Escala, Medes islands, Palamos, Formigues islands, Blanes, Mataró and La Pineda (Salou).

Known georeferenced records of the species: Trapania lineata
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

Abundance

    Western Mediterranean:
    Eastern Mediterranean:
    Atlantic Ocean:

More pictures

Bibliography

Further reading

Cite this article as:

Ballesteros, Manuel, Enric Madrenas, Miquel Pontes (2012-2018) "Trapania lineata" in OPK-Opistobranquis, Published: 15/05/2012, Accessed: 20/04/2018 at (https://opistobranquis.info/en/1S5oV)

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