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''Vertigo angustior'', the narrow-mouthed whorl snail, is a
species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of small
land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...
, a
terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on o ...
pulmonate Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group inclu ...
gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000  extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
or
micromollusk A micromollusc is a shelled mollusc which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine molluscs, although in addition, numerous species of land snails and freshwater molluscs also ...
in the
family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Vertiginidae, the whorl snails. MolluscaBase eds. (2023). MolluscaBase. Vertigo angustior Jeffreys, 1830. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=426425 on 2023-02-07 ;Subspecies: * † ''Vertigo angustior intermedia'' Schlickum & Strauch, 1979


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 The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological ...
-
conservation dependent A conservation-dependent species is a species which has been categorized as "Conservation Dependent" ("LR/cd") by the International Union for Conservation of Nature (IUCN), as dependent on conservation efforts to prevent it from becoming endang ...
* It is mentioned in Annex II of the European Union's
Habitats Directive The Habitats Directive (more formally known as Council Directive 92/43/EEC on the Conservation of natural habitats and of wild fauna and flora) is a directive adopted by the European Community in 1992 as a response to the Berne Convention. The ...
. The species occurs in many countries in Europe and in Asia: Western Europe: *
Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
in
List of endangered species in the British Isles This is a list of United Kingdom Biodiversity Action Plan species. Some suffer because of loss of habitat, but many are in decline following the introduction of foreign species, which out-compete the native species or carry disease. See also th ...
(Ireland, United Kingdom). Endangered in Great Britain. *
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Conservation status: Vulnerable (VU) * Belgium *
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* Liechtenstein *
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* Switzerland Central Europe: *
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*
Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...
- vulnerable (VU). 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 The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
in accordance with Habitats Directive. *
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
*
Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and ...
*
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
- endangeredVertigo angustior - Polish Red Data Book of Animals
/ref> *
Slovakia Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's m ...
* Slovenia Northern Europe: Denmark, Finland,
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,
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Eastern Europe: Belarus, Estonia,
Latvia Latvia, officially the Republic of Latvia, is a country in the Baltic region of Northern Europe. It is one of the three Baltic states, along with Estonia to the north and Lithuania to the south. It borders Russia to the east and Belarus to t ...
, Lithuania, Russian Federation,
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Southern Europe:
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.


References


Further reading

* Zofia Książkiewicz. January 2008. ''The narrow-mouthed whorl snail Vertigo angustior (Pulmonata: Gastropoda: Vertiginidae) - distribution and habitat disturbance in northwestern Poland''. * Provoost, S.; Bonte, D. (Ed.) (2004). Animated dunes: a view of biodiversity at the Flemish coast evende duinen: een overzicht van de biodiversiteit aan de Vlaamse kust Mededelingen van het Instituut voor Natuurbehoud, 22. Instituut voor Natuurbehoud: Brussel, Belgium. ISBN 90-403-0205-7. 416, ill., appendices pp
Tentacle 16.
5–6.
''The narrow-mouthed whorl snail (Vertigo angustior) (1014) Conservation Status Assessment Report''
* Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. Sofia/Moskva (Pensoft). 312 pp., 142 plates.


External links


Jeffreys, J. G. (1830). A synopsis of the testaceous pneumonobranchous Mollusca of Great Britain. Transactions of the Linnean Society of London. 16: 323-392

Müller, A. (1838). Ueber einige vaterländische Landschnecken. Archiv für Naturgeschichte. 4, 1: 209-211, pl. 4. Berlin

Michaud, A.-L.-G. (1831). Complément de l'Histoire des mollusques terrestres et fluviatiles de la France, de J.P.R. Draparnaud. i-xvi, 1-116, Errata (1 p.), 1-12, pls 14-16. (December). Verdun: Lippmann
*
''Vertigo angustior''
at
Animalbase AnimalBase is a project brought to life in 2004 and is maintained by the University of Göttingen, Germany. The goal of the AnimalBase project is to digitize early zoological literature, provide copyright-free open access to zoological works, and p ...
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
{{Taxonbar, from=Q1808988 angustior Gastropods described in 1830 Taxa named by John Gwyn Jeffreys Habitats Directive species