Two views of a shell of Vertigo antivertigoA 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.[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]
References
This article incorporates public domain text from reference.[6]
^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).
^Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
^Pokryszko B. M., Auffenberg K., Hlaváč J. Č. & Naggs F. (2009). "Pupilloidea of Pakistan (Gastropoda: Pulmonata): Truncatellininae, Vertigininae, Gastrocoptinae, Pupillinae (In Part)". Annales Zoologici59(4): 423-458.
doi:
10.3161/000345409X484847.
^
abcdPilsbry H. A. &
Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata.Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page
163–164.
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017
Connolly, M. (1939). A monographic survey of South African non-marine Mollusca. Annals of the South African Museum. 33: 1–660. page(s): 403
Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. Sofia/Moskva (Pensoft). 312 pp., 142 plates.
erbert, D.G. (2010). The introduced terrestrial Mollusca of South Africa. SANBI Biodiversity Series, 15: vi + 108 pp. Pretoria.