Vertigo ovata, common name the ovate vertigo, is a species of minute, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails.[2]
Description
The length of the shell attains 2.3 mm, its diameter 1.4 mm.
The brown shell is dextral and subovate. Its apex is obtuse. The shell contains five glabrous whorls. The suture is not very deeply impressed. The body whorl is indented near and upon the outer lip. The aperture is semioval. The outer lip is five-toothed, of which three are situated on the transverse portion of the lip, parallel to each other, equidistant. The superior and inferior ones are small, the latter sometimes obsolete, the intermediate one lamelliform, prominent. The two others are situated on the columella, approximate, extending at right angles to the three preceding ones, the superior one oblique and smaller. The outer lip is reflected but not flattened, bidentate, the teeth lamelliform and prominent. The umbilicus is distinct. [3]
Distribution
This species is endemic to and widely spread in the United States, occurring in:
References
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^ Mollusc Specialist Group (1996). "Vertigo ovata". IUCN Red List of Threatened Species. 1996: e.T22944A9400460. doi:10.2305/IUCN.UK.1996.RLTS.T22944A9400460.en. Retrieved 16 November 2021.
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^ Marshall, B. (2014). Vertigo ovata (Say, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=819972 on 2014-11-06
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^ Pilsbry, H. A.; Cooke, C. M. (1918-1920). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 25: Pupillidae (Gastrocoptinae, Vertigininae). pp i-ix, 1-404, pls 1-34. Philadelphia, published by the Conchological Section, Academy of Natural Sciences.
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^ Kathryn E. Perez. (last edited September 12, 2006) Land Snail List for Texas Archived April 30, 2009, at the Wayback Machine. accessed 25 June 2009.
- Calkins, W.W. (1880). Description and figure of a new species of Zonites from Illinois. The Valley Naturalist, 2(1): 53.
- Cockerell, T. D. A. (1891). New forms of American Mollusca. Zoe. 2(1): 18.
- Barker, G. M. (1999). Naturalised terrestrial Stylommatophora (Mollusca: Gastropoda). Fauna of New Zealand 38: 1-254
- Rosenberg, G. & Muratov, I. V. (2006). Status report on the terrestrial Mollusca of Jamaica. Proceedings of the Academy of Natural Sciences of Philadelphia. 155: 117-161; Erratum: 156: 401 (2007).
- Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. pp 196–219 in Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.
- Charles, L. (2016). Inventaire de mollusques terrestres de Guadeloupe, Petites Antilles: données préliminaires. Journal MalaCo. 12: 47-56.
