Vertigo arctica

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Vertigo arctica
Vertigo arctica shell.jpg
Apertural view of a shell of Vertigo arctica

Near Threatened (IUCN 3.1)[1]
Scientific classification edit
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Vertiginidae
Genus: Vertigo
Species:
V. arctica
Binomial name
Vertigo arctica
(Wallenberg, 1858)[2]
Synonyms
  • Pupa arctica Wallenberg, 1858

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[3]
Drawing of aperture of Vertigo arctica

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.[4]

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.[4]

The width of the adult shell is about 2.5 mm, the height about 1.5 mm.[4]

References[]

This article incorporates public domain text from reference.[4]

  1. ^ Neubert, E. (2011). "Vertigo arctica". IUCN Red List of Threatened Species. 2011: e.T196117A8998129. doi:10.2305/IUCN.UK.2011-2.RLTS.T196117A8998129.en. Retrieved 19 November 2021.
  2. ^ Wallenberg C. von 1858. Beschreibung einer neuen Pupa. Malakozoologische Blätter 5: 32. Cassel.
  3. ^ Beata M. Pokryszko. "Vertigo arctica (Wallenberg, 1858)". Instytut Ochrony Przyrody Polskiej Akademii Nauk.
  4. ^ 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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