Alvania aspera

Alvania aspera
Shell of Alvania aspera (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. aspera
Binomial name
Alvania aspera (Philippi, 1844)
Synonyms
Rissoa asperaR. A. Philippi, 1844 superseded combination

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

Description

The length of the shell varies between 1.5 mm and 3.7 mm.

The shell resembles Alvania lineata , but the decussations are deeper, giving the nodules a rough appearance. ^[2]

Distribution

This species occurs in the Mediterranean Sea off Tunisia and Greece.

References

1. Alvania aspera (Philippi, 1844) . Gofas, S. (2009). Alvania aspera (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=141159 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
• Thanasis Manousis, The Marine Mollusca of Greece: an up-to-date, systematic catalogue, documented with bibliographic and pictorial references