Vertigo geyeri
| Vertigo geyeri | |
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| Apertural view of a shell of Vertigo geyeri | |
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| Six shells of Vertigo geyeri, scale bar in mm | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| (unranked): | clade Heterobranchia
clade Euthyneura |
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| Genus: | |
| Subgenus: | Vertigo
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| Species: | V. geyeri
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| Binomial name | |
| Vertigo geyeri | |
| Synonyms | |
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Vertigo geyerii Lindholm, 1925 [orth. error] | |
Vertigo geyeri is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.
Description
The egg-shaped-oval shell measures just 1.7 to 1.9 mm. in length and 1.2 mm in width. There are up to 5 whorls with deep seams. The aperture has 4 small protrusions (called "teeth") ( on parietal one columellar and two palatal), it can also have fewer teeth. The colour of the shell is reddish-brown and the surface is shiny. The shell has regular growth striations and is almost smooth.
Habitat
This species lives in marshes.
The specific name geyeri is in honor of German zoologist David Geyer (1855–1932).
Distribution and conservation status
- IUCN red list - conservation dependent
- It is mentioned in Annex II of the European Union's Habitats Directive.
This species occurs in:
- British Isles (Ireland and United Kingdom) - listed in List of endangered species in the British Isles, Great Britain (endangered in Great Britain[3]), Ireland
- Continental Europe:
- Austria
- Czech Republic - critically endangered (CR).[4][5] Its conservation status in Czech Republic in 2004-2006 is bad (U2) in report for European commission in accordance with Habitats Directive.[6]
- Denmark, Finland, Germany, Latvia, Lithuania, Norway, Poland, Slovakia, Ukraine,[7] Sweden and Switzerland.
References
- ^ Mollusc Specialist Group (1996). "Vertigo geyeri". 2006 IUCN Red List of Threatened Species. IUCN. Retrieved 2007-04-30.
- ^ Template:De icon Lindholm W. A. 1925. Studien an palaearktischen Vertigo-Arten. Archiv für Molluskenkunde 57 (5/6): 241-251.
- ^ 2001-2007. Action plan for Vertigo geyeri. Uk Biodiversity Action Plan, Joint Nature Conservation Committee.
- ^ "Evropsky významné lokality v České republice" (in Czech). 2003.
- ^ "Red List of the molluscs (Mollusca) of the Czech Republic". 2006-07-14.
- ^ Template:Cs icon Dušek J., Hošek M. & Kolářová J. (2007) Hodnotící zpráva o stavu z hlediska ochrany evropsky významných druhů a typů přírodních stanovišť v České republice za rok 2004-2006. - Ochrana přírody, 62(5): appendix 5:I-IV.
- ^ 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 geyeri at Animalbase taxonomy,short description, distribution, biology,status (threats), images
- Photo of Vertigo geyeri
- http://www.staff.amu.edu.pl/~polmal/smp/v103.htm
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