Segmentina nitida

Taxobox
name = "Segmentina nitida"


image_width = 225px
status = NE
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Orthogastropoda
superordo = Heterobranchia
ordo = Pulmonata
familia = Planorbidae
genus = "Segmentina"
species = "S. nitida"
binomial = "Segmentina nitida"
binomial_authority = (O. F. Müller, 1774)

The Shining ram's-horn snail, "Segmentina nitida", is a species of small, air-breathing, freshwater snail, an aquatic gastropod mollusk or micromollusk in the family Planorbidae, the ram's horn snails.

Description

The shell of this species is sinistral in coiling and almost planispiral in shape. The spire is deeply sunken. The surface of the shell is glossy.

The maximum shell diameter is about 7 mm.

Habitat

This species lives in water weeds, in ponds and marsh drainage ditches. It is not common.

Distribution

* Not listed in IUCN red list - not evaluated (NE) [2006 IUCN Red List of Threatened Species. . Cited 5 March 2007.]

* The Czech Republic - vulnerable (VU) [Juřičková L., Horsák M. & Beran L., 2001: Check-list of the molluscs (Mollusca) of the Czech Republic. Acta Soc. Zool. Bohem., 65: 25-40.]
* England - endangered (EN) [UK Biodiversity Action Plan http://www.ukbap.org.uk/UKPlans.aspx?ID=570] , (British Isles - listed in List of endangered species in the British Isles)
* Germany - endangered ("gefährdet") [Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2]
* Netherlands [http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/segmentina-nitida]
* Poland
* Slovakia
* ...

References

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