Vertigo angustior
| Narrow-mouthed whorl snail | |
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| Six shells of Vertigo angustior, scale bar in mm | |
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| (unranked): | clade Heterobranchia
clade Euthyneura |
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| Species: | V. angustior
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| Binomial name | |
| Vertigo angustior | |
Vertigo angustior, the narrow-mouthed whorl snail, is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the whorl snails.
Description
The shell measures 1.6 to 2.0 mm (mean: 1.8 mm) in height and 0.9 1.05 mm (mean: 1 mm) in width. It is oblong ovoid with 4.5 to 5.35 whorls (mean 5). The aperture is sinistral and relatively small. The aperture edge is bent (indented) and slightly thickened and the aperture is slightly notched, the notch continuing outside as a spiral groove. The aperture bears 5-6 mainly short denticles: 2 parietal; 2 columellar; 1 palatal, the latter relatively long. The shell is brown to yellowish brown or horn coloured and has a fine growth striation.
Distribution
- IUCN red list - conservation dependent
- It is mentioned in Annex II of the European Union's Habitats Directive.
The species occurs in many countries in Europe and in Asia:[3]
Western Europe:
- Great Britain in List of endangered species in the British Isles (Ireland, United Kingdom). Endangered in Great Britain.[4]
- Ireland Conservation status: Vulnerable (VU)[5]
- Belgium
- France[6]
- Liechtenstein
- Netherlands[7]
- Switzerland
Central Europe:
- Austria
- Czech Republic - vulnerable (VU).[8][9] Its conservation status in the Czech Republic in 2004-2006 is bad (U2) in pannonian area and favourable (FV) in continental area in report for European commission in accordance with Habitats Directive.[10]
- Germany
- Hungary
- Poland - endangered[11]
- Slovakia
- Slovenia
Northern Europe: Denmark, Finland, Norway, Sweden
Eastern Europe: Belarus, Estonia, Latvia, Lithuania, Russian Federation, Ukraine
Southern Europe: Italy, Romania
Asia: Armenia, Azerbaijan, Georgia.
References
- ^ Moorkens, E.; Killeen, I. & Seddon, M. (2012). "Vertigo angustior". IUCN Red List of Threatened Species. 2012: e.T22935A16658012. doi:10.2305/IUCN.UK.2012-1.RLTS.T22935A16658012.en.
- ^ Jeffreys J. G. 1830. A synopsis on the testaceous pneumonobrancheous Mollusca of Great Britain. Transactions of the Linnean Society of London 16(2): 323-392.
- ^ distribution
- ^ 2000-2007. Action plan for Vertigo angustior Archived 2007-11-07 at the Wayback Machine. UK Biodiversity Action Plan. Joint Nature Conservation Committee.
- ^ Byrne et al., 2009. http://www.npws.ie/en/media/NPWS/Publications/Redlists/RL2.pdf[permanent dead link]
- ^ "Recherche de sites par espèce : Invertébrés : Vertigo angustior (Vertigo angustior)". 2007. Archived from the original on 2007-10-01. Retrieved 2007-05-14.
- ^ "Vertigo angustior". 2005.
- ^ "Evropsky významné lokality v České republice" (in Czech). 2003. Archived from the original on 2007-06-09. Retrieved 2007-04-30.
- ^ "Red List of the molluscs (Mollusca) of the Czech Republic". 2006-07-14.
- ^ (in Czech) Dušek J., Hošek M. & Kolářová J. (2007) Hodnotící zpráva o stavu z hlediska ochrany evropsky významných druhů a typů přírodních stanovišť v České republice za rok 2004-2006. - Ochrana přírody, 62(5): appendix 5:I-IV.
- ^ Vertigo angustior - Polish Red Data Book of Animals
Further reading
- Zofia Książkiewicz. January 2008. The narrow-mouthed whorl snail Vertigo angustior (Pulmonata: Gastropoda: Vertiginidae) - distribution and habitat disturbance in northwestern Poland. Tentacle 16. 5-6.
- The narrow-mouthed whorl snail (Vertigo angustior) (1014) Conservation Status Assessment Report[permanent dead link].
External links
- Vertigo angustior at Animalbase taxonomy,short description, distribution, biology,status (threats), images
- photo of Vertigo angustior
- https://web.archive.org/web/20081108053410/http://www.staff.amu.edu.pl/~polmal/smp/v115.htm
- MNHN, Paris: specimen
