Vertigo genesii

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Vertigo genesii
Vertigo genesii shell.jpg
Drawing of the shell of Vertigo genesii.
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Vertiginidae
Genus: Vertigo
Species:
V. genesii
Binomial name
Vertigo genesii
(Gredler, 1856) [2]
Synonyms
  • Pupa genesiiGredler, 1856 [2]
  • Vertigo (Glacivertigo) genesii(Gredler, 1856) (unaccepted subgeneric classification)
  • Vertigo (Vertigo) genesii(Gredler, 1856) · alternate representation

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. [3] Like many other land snail species, Vertigo genesii has a high affinity to fen habitats, a type of wetland fed by mineral-rich ground water. Based of fossil records, genesii and other relative snail species were distributed in central Europe during the Later Glacial and Early Holocene period.

Contents

A fossil shell of Vertigo genesii. Vertigo genesii shell 2.jpg
A fossil shell of Vertigo genesii.

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. [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

The animal body color is raven-black. The tentacles are short, contracted in the middle. [4]

Distribution and conservation status

Distribution Vertigo-genesii Presence in European countries.png
Distribution

This species occurs in:

References

This article incorporates public domain text from reference. [4]

  1. ↑ 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.
  2. 1 2 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)
  3. ↑ 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
  4. 1 2 3 4 Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 204.
  5. ↑ Vertigo (Vertigo) genesii (GREDLER, 1856) Archived January 5, 2005, at the Wayback Machine . In: The Vertiginidae of Poland, accessed 2 July 2009.
  6. ↑ 2001-2007. Action plan for Vertigo genesii. UK Biodiversity Action Plan, Joint Nature Conservation Committee.

Schenková, Veronika, and Horsák, Michal(2013). Refugial Populations of Vertigo lilljeborgi and V. genesii (Vertiginidae): New Isolated Occurrences in Central Europe, Ecology and Distribution. American Malacological Bulletin, 31(2) : 323-329. URL: https://doi.org/10.4003/006.031.0211

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