Vertigo arctica
Template:Short description Template:Speciesbox
Vertigo arctica is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails.[1]
Distribution
This species occurs in:
Shell description
Shell is dextral, rimate, ovate, thin, smoothish, somewhat glossy, pellucid, brownish-tawny. The shell has 5 to 5 ½ whorls, convex, the last nearly two-fifths the altitude, rounded at base, anteriorly having a somewhat swollen crest.[3]
Aperture is slightly oblique, semiovate or piriform, obstructed by 3 teeth: in the middle of the parietal wall, on the columella, and a smaller one in the palate (frequently wanting). Peristome is spreading, slightly labiate, the margins joined by a callus, the right margin very strongly curved above, columellar margin is somewhat dilated, spreading.[3]
The width of the adult shell is about 2.5 mm, the height about 1.5 mm.[3]
References
This article incorporates public domain text from reference.[3]
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- ↑ MolluscaBase eds. (2022). MolluscaBase. Vertigo arctica (Wallenberg, 1858). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1430498 on 2023-02-07
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- ↑ a b c d Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 189.
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- Wallenberg, C. von (1858). Beschreibung einer neuen Pupa. Malakozoologische Blätter, 5: 32