Alvania canariensis

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Alvania canariensis
Alvania canariensis 02.jpg
Alvania canariensis 01.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Rissooidea
Family: Rissoidae
Genus: Alvania
Species:
A. canariensis
Binomial name
Alvania canariensis
(d'Orbigny, 1840)
Synonyms

Rissoa canariensisd'Orbigny, 1840 (original combination)

Contents

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

Description

The length of the shell varies between 1 mm and 3 mm.

The imperforate, white shell is solid. It is covered with rounded nodules by the intersection of longitudinal and spiral ribs. The shell contains five whorls, slightly convex, with a rather deep suture. The outer lip is thickened and margined. [2]

About 3 1/2 of the whorls are in the teleoconch, while the other 1 1/2 are in the protoconch. [3]

The protoconch is white, with a black or brown spot at the apex. The teleoconch is usually brown. [3]

Distribution

The species has been found off the Canary Islands.

References

  1. Alvania canariensis (d'Orbigny, 1840) . Retrieved through: World Register of Marine Species  on 3 December 2018.
  2. G.W. Tryon (884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9
  3. 1 2 "The genus Alvania on the Canary Islands and Madeira" (PDF). Bulletin Zoölogisch Museum - Universiteit van Amsterdam. 11 (27): 216–217. 1989. Retrieved 24 May 2025.