- Source: Vertigo arctica
Vertigo arctica is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails.
Distribution
This species occurs in:
Poland - critically endangered
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.
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.
The width of the adult shell is about 2.5 mm, the height about 1.5 mm.
References
This article incorporates public domain text from reference.
Wallenberg, C. von (1858). Beschreibung einer neuen Pupa. Malakozoologische Blätter, 5: 32
External links
Gredler, V. M. (1890). Eine neue Tiroler Pupa. Nachrichtsblatt der deutschen malakozoologischen Gesellschaft. 22: 41-42. Frankfurt am Main.
Kata Kunci Pencarian:
- Vertigo arctica
- Vertigo extima
- Vertigo (gastropod)
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