Valvata cristata

Valvata cristata

Taxobox
name = "Valvata cristata"


status = NE
status_ref =
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Orthogastropoda
superordo =
ordo = Ectobranchia
familia = Valvatidae
genus = "Valvata"
species = "V. cristata"
binomial = "Valvata cristata"
binomial_authority = 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.

hell 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.

Habitat

This species lives in stagnant and slow-moving water.

Distribution and conservation status

* Not listed in IUCN red list - not evaluated (NE) [2006 IUCN Red List of Threatened Species. . Cited 10 November 2007.]
* Czech Republic
* Slovakia
* Poland
* Germany - ("Arten der Vorwarnliste") [Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 106, ISBN 3-923376-02-2]
* Netherlands
* the British Isles
* ...

References

* Janus, Horst, 1965. ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London


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