Vertigo genesii
Template:Short description Template:Speciesbox
Vertigo genesii, common name the round-mouthed whorl snail, is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.[1]
Shell description
The shell is very small, ovate, obtuse, indistinctly, spaced striate, glossy purplish brown. The shell has 4½ whorls, that are rather convex, high, rapidly increasing, joined by a somewhat impressed suture, the penult large, almost ventricose. Umbilical opening is moderate.[2]
The aperture is semirotund, nearly quadratic, without any folds. Peristome is scarcely expanded, thickened liplike, bordered with bluish black, the margins are connected by a very weak callus, the right margin is arched at the insertion.[2]
The width of the adult shell is 1.03–1.20 mm, the height is 1.63–2.00 mm.[3]
Anatomy
The animal body color is raven-black. The tentacles are short, contracted in the middle.[2]
Distribution and conservation status
- IUCN red list - conservation dependent
- It is mentioned in Annex II of the European Union's Habitats Directive.
This species occurs in:
- British Isles (in the United Kingdom only): Great Britain. It is endangered in Great Britain[4] and it is listed in List of endangered species in the British Isles.
- Continental Europe: Finland, Germany, Norway, Poland, Romania, Russian Federation, Sweden, and Switzerland.
References
This article incorporates public domain text from reference.[2]
<templatestyles src="Reflist/styles.css" />
- ↑ MolluscaBase eds. (2023). MolluscaBase. Vertigo genesii (Gredler, 1856). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1050661 on 2023-02-08
- ↑ a b c d Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 204.
- ↑ Vertigo (Vertigo) genesii (GREDLER, 1856) Template:Webarchive. In: The Vertiginidae of Poland, accessed 2 July 2009.
- ↑ 2001-2007. Action plan for Vertigo genesii. UK Biodiversity Action Plan, Joint Nature Conservation Committee.
Script error: No such module "Check for unknown parameters".
- Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017