Pupilla sterrii

Pupilla sterrii
	Drawing of apertural view of a shell of Pupilla sterrii
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura; clade Panpulmonata; clade Eupulmonata; clade Stylommatophora; informal group Orthurethra
Superfamily:	Pupilloidea
Family:	Pupillidae
Genus:	Pupilla
Species:	P. sterrii
Binomial name
	Pupilla sterrii; (Forster & Voith, 1840)
Synonyms
	Pupa Sterrii Forster & Voith, 1840

Pupilla sterrii is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Pupillidae.

Distribution

This species has a scattered distribution and occurs in a number of areas including Eurasia: the Alps and Carpathians to Turkey and NW China^[2]

Endangered in Germany^[2]
Lower concern in Austria^[2]
Lower concern in Switzerland^[2]
Italy^[2]
Vulnerable in the Czech Republic^[3]
Slovakia^[4]
Poland
Ukraine^[5]

In lower altitudes the species is threatened by continuous habitat destructions.^[2]

Description

The shell is light horny coloured, weathering grey, finely ribbed.^[2] Whorls are strongly convex with deep suture.^[2] The aperture is with 2 teeth.^[2]

The height of the shell is 2.8-3.5 mm.^[2] The width of the shell is 1.6 mm.^[2]

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Ecology

Pupilla sterrii lives in grass in very dry and sunny areas of limestone rock, between stones, and on dry meadows on calcareous substrate.^[2] In north Italy it occurs up to 2800 m.^[2]

This species is Ovoviviparous.^[2]

References

This article incorporates public domain text from the reference.^[2]

^ Forster F. (1840). Animalia mollusca. Mit Anmerkungen von I. v. Voith. pp. 459-478, In: Fürnrohr A. E.: Naturhistorische Topographie von Regensburg. In Verbindung mit Forster, Herrich-Schäffer, Koch, v. Schmöger und v. Voith. Dritter Band, die Fauna von Regensburg enthaltend. pp. I-XVI [= 1-16], 1-478. Regensburg. (Manz).
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o "Species summary for Pupilla sterrii". AnimalBase. Last modified 28-01-2010, accessed 31 July 2010.
^ " Red List of the molluscs (Mollusca) of the Czech Republic". accessed 30 July 2010.
^ Čejka T., Dvořák L., Horsák M. & Šteffek J. (2007). "Checklist of molluscs (Mollusca) in the Slovak Republic". Folia Malacologica 15(2): 49-58.
^ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.

[1] Forster F. (1840). Animalia mollusca. Mit Anmerkungen von I. v. Voith. pp. 459-478, In: Fürnrohr A. E.: Naturhistorische Topographie von Regensburg. In Verbindung mit Forster, Herrich-Schäffer, Koch, v. Schmöger und v. Voith. Dritter Band, die Fauna von Regensburg enthaltend. pp. I-XVI [= 1-16], 1-478. Regensburg. (Manz).

[AB-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o "Species summary for Pupilla sterrii". AnimalBase. Last modified 28-01-2010, accessed 31 July 2010.

[3] " Red List of the molluscs (Mollusca) of the Czech Republic". accessed 30 July 2010.

[Čejka_2007-4] Čejka T., Dvořák L., Horsák M. & Šteffek J. (2007). "Checklist of molluscs (Mollusca) in the Slovak Republic". Folia Malacologica 15(2): 49-58.

[Balashov-5] 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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