Valvata cristata
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| Valvata cristata | ||||||||||||||||
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NE
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| Valvata cristata O. F. Müller, 1774 |
Valvata cristata is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Valvatidae, the valve snails.
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[edit] Shell description
The shell of this exceeding small (2-4 mm) Valvata species is very flat in its coiling, and therefore it somewhat resembles a Planorbis shell. However, the shell is dextral in coiling and has an operculum.
[edit] Habitat
This species lives in stagnant and slow-moving water.
[edit] Distribution and conservation status
- Not listed in IUCN red list - not evaluated (NE) [1]
- Czech Republic
- Slovakia
- Poland
- Germany - (Arten der Vorwarnliste) [2]
- Netherlands
- the British Isles
- ...
[edit] References
- ^ 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 10 November 2007.
- ^ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 106, ISBN 3-923376-02-2
- Janus, Horst, 1965. ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London
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