Tribe Vertiginini Higher classification Vertigo | Superfamily Pupilloidea Subfamily Vertigininae Genus Vertigo Rank Species | |
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Similar Desmoulin's whorl snail, Vertigo, Vertigo geyeri, Vertigo antivertigo, Vertigo genesii | ||
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.
Contents
Description
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.
Distribution
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.