Vertigo angustior
| Narrow-mouthed whorl snail | |
|---|---|
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| Apertural view of a shell of Vertigo angustior | |
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| Six shells of Vertigo angustior, scale bar in mm | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): |
clade Heterobranchia clade Euthyneura |
| Superfamily: | Pupilloidea |
| Family: | Vertiginidae |
| Subfamily: | Vertigininae |
| Tribe: | Vertiginini |
| Genus: | Vertigo |
| Species: | V. angustior |
| Binomial name | |
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Vertigo angustior Jeffreys, 1830 |
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clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
clade Orthurethra
The narrow-mouthed whorl snail, scientific name Vertigo angustior, is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the whorl snails.
The shell measures 1.6 to 2.0 mm (mean: 1.8 mm) in height and 0.9 1.05 mm (mean: 1 mm) in width.It is oblong ovoid with 4.5 to 5.35 whorls (mean 5).The aperture is sinistral and relatively small. The aperture edge is bent (indented) and slightly thickened and the aperture is slightly notched, the notch continuing outside as a spiral groove. The aperture bears 5-6 mainly short denticles: 2 parietal; 2 columellar; 1 palatal, the latter relatively long. The shell is brown to yellowish brown or horn coloured and has a fine growth striation.
The species occurs in many countries in Europe and in Asia:
Western Europe:
Central Europe:
Northern Europe: Denmark, Finland, Norway, Sweden
Eastern Europe: Belarus, Estonia, Latvia, Lithuania, Russian Federation, Ukraine
Southern Europe: Italy, Romania
Asia: Armenia, Azerbaijan, Georgia.
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Wikipedia