Vertigo genesii, common name the round-mouthed whorl snail, is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.[3]
| Vertigo genesii | |
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| Drawing of the shell of Vertigo genesii. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Vertiginidae |
| Genus: | Vertigo |
| Species: | V. genesii
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| Binomial name | |
| Vertigo genesii | |
| Synonyms | |
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Shell description
editThe 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.[4]
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.[4]
The width of the adult shell is 1.03–1.20 mm, the height is 1.63–2.00 mm.[5]
Anatomy
editThe animal body color is raven-black. The tentacles are short, contracted in the middle.[4]
Distribution and conservation status
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- 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[6] 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
editThis article incorporates public domain text from reference.[4]
- ^ Moorkens, E. (2011). "Vertigo genesii". IUCN Red List of Threatened Species. 2011: e.T22936A9399069. doi:10.2305/IUCN.UK.2011-2.RLTS.T22936A9399069.en. Retrieved 19 November 2021.
- ^ a b Gredler V. 1856. Tirol's Land- und Süsswasser-Conchylien. I. Die Landconchylien. Verhandlungen des Zoologisch-Botanischen Vereins in Wien (Abhandlungen) 6: 25-162, Table 2, figure 3. (in German)
- ^ 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) Archived January 5, 2005, at the Wayback Machine. In: The Vertiginidae of Poland, accessed 2 July 2009.
- ^ 2001-2007. Action plan for Vertigo genesii. UK Biodiversity Action Plan, Joint Nature Conservation Committee.
- Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017
External links
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