Vertigo antivertigo
Species of gastropod
From Wikipedia, the free encyclopedia
Vertigo antivertigo is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.[3]
| Vertigo antivertigo | |
|---|---|
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| shell of Vertigo antivertigo (specimen at MNHN, Paris) | |
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| Five shells of Vertigo antivertigo, scale in mm | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Vertiginidae |
| Subfamily: | Vertigininae |
| Genus: | Vertigo |
| Species: | V. antivertigo |
| Binomial name | |
| Vertigo antivertigo (Draparnaud, 1801)[2] | |
| Synonyms | |
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Distribution
This species occurs in countries and islands including:
Shell description
The shell is rimate, oval, ventricose, nearly smooth, glossy, amber-brown or nearly chestnut, slightly transparent, outlines very convex. Whorls are rather convex, the last somewhat compressed below, with an impression over the lower palatal fold, a moderately developed, opaque crest behind the peristome; and a very deep impression between the crest and the point of the outer lip.[6]
Aperture having 6 principal and usually several smaller teeth: parietal lamella rather long; angular and infraparietal short and smaller. Columellar lamella large, ascending inwardly. Upper and lower palatal folds strong, the lower longer. Basal fold stout, in a subcolumellar position. Usually there are small suprapalatal and infrapalatal denticles. Peristome is thin, a little expanded, the outer margin biarcuate, with a median entering angle. Palatal callus is well developed.[6]
The width of the adult shell varies from 1.2 to 1.4 mm, the height from 1.95 to 2.25 mm.[6]
