Vertigo pygmaea

Vertigo pygmaea
Apertural view of a shell of Vertigo pygmaea
NE[1]
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Superfamily: Pupilloidea
Family: Vertiginidae
Subfamily: Vertigininae
Tribe: Vertiginini
Genus: Vertigo
Subgenus: Vertigo
Species: V. pygmaea
Binomial name
Vertigo pygmaea
(Draparnaud, 1801)[2]
Synonyms

Pupa pygmæa Draparnaud, 1801

Vertigo pygmaea, common name the "crested vertigo", is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails.

Shell description

Drawing of a shell of Vertigo pygmaea

Shell extremely small, oval-cylindric and obtuse at the summit, of a more or less deep brown, smooth and little shining. Spire consist of 5 progressively increasing whorls.[3]

Aperture is scarcely longer than wide, and nearly round, furnished with 4 teeth, of which the superior is acute, two deeply placed inferior, and finally one on the columellar margin. A fifth tooth is often found in the base of the aperture. The lateral margin is slightly angular in the middle. Peristome is reflected below. Umbilical crevice quite pronounced.[3]

This snail lives under hedges.[3]

Distribution

This species occurs in Europe in the following countries and islands:

And in America, in:

References

This article incorporates public domain text from reference.[3]

  1. ↑ IUCN 2007. 2007 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 26 August 2008.
  2. ↑ Draparnaud J. P. R. 1801. Tableau des mollusques terrestres et fluviatiles de la France. pp. [1-2], 1-116. Montpellier, Paris. (Renaud; Bossange, Masson & Besson).
  3. 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 174.
  4. ↑ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
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