Vertigo antivertigo

Vertigo antivertigo is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the whorl snails.

Vertigo antivertigo
shell of Vertigo antivertigo (specimen at MNHN, Paris)
Five shells of Vertigo antivertigo, scale in mm
NE[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
Superfamily:
Pupilloidea
Family:
Vertiginidae
Subfamily:
Vertigininae
Tribe:
Vertiginini
Genus:
Vertigo
Subgenus:
Vertigo
Species:
V. antivertigo
Binomial name
Vertigo antivertigo
(Draparnaud, 1801)[2]

Distribution

This species occurs in countries and islands including:

Two views of a shell of Vertigo antivertigo
A juvenile shell of Vertigo antivertigo

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.[5]

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.[5]

The width of the adult shell varies from 1.2 to 1.4 mm, the height from 1.95-2.25 mm.[5]

References

This article incorporates public domain text from reference.[5]

  1. IUCN 2007. (2007) IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 19 September 2008.
  2. Draparnaud J. P. R. 1801. Tableau des mollusques terrestres et fluviatiles de la France. pp. [1-2], 1-116. Montpellier, Paris. (Renaud; Bossange, Masson & Besson).
  3. Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
  4. Pokryszko B. M., Auffenberg K., Hlaváč J. Č. & Naggs F. (2009). "Pupilloidea of Pakistan (Gastropoda: Pulmonata): Truncatellininae, Vertigininae, Gastrocoptinae, Pupillinae (In Part)". Annales Zoologici 59(4): 423-458. doi:10.3161/000345409X484847.
  5. Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 163–164.
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