Runcina adriatica

Runcina adriatica (Thompson, 1980)

Runcina adriatica by Enric Madrenas

Taxonomy
 

Superdomain

Biota  

 

Kingdom

Animalia  

 

Phylum

Mollusca  

 

Class

Gastropoda  

 

Subclass

Heterobranchia  

 

Infraclass

Euthyneura  

 

Subterclass

Tectipleura  

 

Order

Runcinacea  

 

Superfamily

Runcinoidea  

 

Family

Runcinidae  

 

Genus

Runcina  

 

Species

Runcina adriatica  T. Thompson, 1980

 
 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 141405).
Description
These animals use to be between 1.5 and 2.5 mm in length. The body is dark brown and it is almost entirely covered by black spots on the dorsum and on the foot. There are also numerous whitish or cream colored dots which can concentrate to form spots or bands, among which stands out a transverse band, sometimes incomplete, on the first third of the body and a more diffuse longitudinal line extending from the head to the posterior area of the notum, where it connects with a thicker white band located at the border of the notum. The cephalic region lateral zones are colored with light tones are also whitish dotted. The eyes are visible in these clear cephalic areas. In some specimens the black spots on the back concentrate forming other black bands right behind the white transversal anterior band and ahead of the rear area of ​​the back. In the foot there are also black spots forming a central dark band that can be seen in the tail. The notum is raised in the back forming a paleal ridge, where there are two small semitransparent gills.

Biology
In the Mediterranean it seems to be a very common species living among Posidonia oceanica rhizomes, something confirmed in recent studies. It is a herbivorous species that due to its small size and crypsis on the Posidonia rhizomes, it is very difficult to observe in nature.

Etymology

  • Runcina. From Latin “runcina”, carpenter’s plane, a tool used to smooth the wood’s surface.
  • Adriatica. Of or pertaining to the Adriatic Sea. From Latin “Adriaticus”, from “Adria”, an Etruscan settlement at the northern shore of the Adriatic Sea.

Distribution
Runcina adriatica was described in 1980 by Thompson, based on specimens collected off the coast of today’s Croatia. It was later collected again in waters of Croatia, in the Canaries island and the Azores. In the Iberian Peninsula is only known in several localities of the Costa Brava like Tossa de Mar.

Known georeferenced records of the species: Runcina adriatica
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: Runcina adriatica

    Catalunya: Ballesteros (datos no publicados) [Cadaqués]. Canarias: Malaquias and Calado (1997), Ortea et al. (2001), Moro et al. (2003). Azores: Gosliner (1990), Mikkelsen (1995), Ávila (2000), Malaquias (2001), Ávila et al. (in press, as R. cf. adriatica).

    Sources: Cervera et al., 2004, Ballesteros, 2007 & 2016, McDonald, 2006 and other sources.

Abundance

    Western Mediterranean:
    Eastern Mediterranean:
    Atlantic Ocean:

More pictures

Bibliography

Further reading

Cite this article as:

Ballesteros, Manuel, Enric Madrenas, Miquel Pontes (2012-2018) "Runcina adriatica" in OPK-Opistobranquis, Published: 14/05/2012, Accessed: 14/11/2018 at (https://opistobranquis.info/en/EDCzc)

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