Alvania tenera

Alvania tenera
Shell of Alvania tenera (specimen at the Natural History Museum, Rotterdam)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Superfamily:	Rissooidea
Family:	Rissoidae
Genus:	Alvania
Species:	A. tenera
Binomial name
Alvania tenera (Philippi, 1844)
Synonyms
Crisilla tenera(R. A. Philippi, 1844) superseded combination Rissoa teneraR. A. Philippi, 1844 superseded combination

Alvania tenera is a species of small sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae. ^[1]

Description

The length of the shell varies between 1.6 mm and 3 mm.

The thin shell is pellucid and brownish white. it contains 5 whorls, with a deep suture, and strong spiral ridges, of which there are 9-10 on the body whorl. The wider interstices are slightly longitudinally striated. The outer lip is simple and dentate by the ridges. ^[2]

Distribution

This species occurs in the Western and Central Mediterranean Sea.

References

1. Alvania tenera (Philippi, 1844) . Gofas, S. (2009). Alvania tenera (Philippi, 1844). In: Bouchet, P.; Gofas, S.; Rosenberg, G. World Marine Mollusca database. Accessed through the World Register of Marine Species at http://marinespecies.org/aphia.php?p=taxdetails&id=141249 on 9 August 2010 .
2. G.W. Tryon (884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9

External links

• Philippi, R. A. (1844). Enumeratio molluscorum Siciliae cum viventium tum in tellure tertiaria fossilium, quae in itinere suo observavit. Vol. 2.. Halle (Halis Saxorum): Eduard Anton. iv + 303 pp., pls 13-28
• Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213
• Garilli V. 2008. On some Neogene to Recent species related to Galeodina Monterosato, 1884, Galeodinopsis Sacco, 1895, and Massotia Bucquoy, Dautzenberg, and Dollfus, 1884 (Caenogastropoda: Rissoidae) with the description of two new Alvania species from the Mediterranean Pleistocene. The Nautilus, 122(1): 19–51