Vertigo pygmaea

Vertigo pygmaea
	Apertural view of a shell of Vertigo pygmaea
Conservation status
	NE
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)
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

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:

Michigan - special concern, see List of threatened fauna of Michigan

References

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

^ IUCN 2007. 2007 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 26 August 2008.
^ 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).
^ ^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 174.
^ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.

External links

Vertigo pygmaea at Animalbase taxonomy,short description, distribution, biology,status (threats), images
images representing Vertigo pygmaea at Encyclopedia of Life
winter survival

[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).

[Pilsbry-3] Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 174.

[Balashov-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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