Vertigo is a genus of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the family Vertiginidae, the whorl snails.
The distribution of the genus Vertigo includes Europe, northern Asia, eastern Asia, Japan, Central and North America, Caribbean and the Bermudas.
In this genus, the shell is deeply rimate and ovate. The apex is acuminate and obtuse. The shell has 5-6 whorls. The last whorl is rounded. The aperture is semioval with 4 to 7 folds. The peristome is scarcely expanded and white-lipped.
Snails in the genus Vertigo have no oral tentacles, thus they have only one pair of tentacles.
The jaw is arched; the ends squarely truncated; the anterior surface striate; the cutting edge with a median projection. The radula has a central tooth that is almost square, tricuspid, as large as or larger than the lateral teeth, which are similar, narrower, and bi- or tricuspid. The marginal teeth are low, wide and serrated.
Species in the genus Vertigo include:
subgenus Vertigo O. F. Müller, 1774
Vertigo alpestris Alder, 1838 - tundra vertigoVertigo antivertigo (Draparnaud, 1801)Vertigo arctica (Wallenberg, 1858)Vertigo arthuri Von Martens, 1882Vertigo bollesiana (Morse, 1865) - Delicate vertigo snailVertigo botanicorum Horsak & Pokryszko, 2010Vertigo extima (Westerlund, 1877)Vertigo genesii (Gredler, 1856) - Round-mouthed Whorl SnailVertigo geyeri Lindholm, 1925Vertigo gouldii (Binney, 1843)Vertigo heldi Clessin, 1877Vertigo lilljeborgi (Westerlund, 1871)Vertigo milium (Gould, 1840) - Blade VertigoVertigo modesta (Say, 1824) - cross vertigoVertigo moulinsiana (Dupuy, 1849) - Desmoulin's whorl snailVertigo ovata (Say, 1822) - ovate vertigoVertigo paradoxa Sterki in Pilsbry, 1900Vertigo pseudosubstriata Ložek, 1954Vertigo pusilla O. F. Müller, 1774 - type speciesVertigo pygmaea (Draparnaud, 1801) - crested vertigoVertigo ronnebyensis (Westerlund, 1871)Vertigo substriata (Jeffreys, 1833)Vertigo ventricosa (E. S. Morse, 1865)subgenus Vertilla Moquin-Tandon, 1856
Vertigo angustior Jeffreys, 1830 - Narrow-mouthed Whorl Snailsubgenus ?
Vertigo alabamensis G. Clapp, 1915 - Alabama VertigoVertigo conecuhensis G. Clapp, 1915Vertigo cubana Crosse, 1890Vertigo eogeaVertigo eogea stagnalisVertigo hachijoensisVertigo hebardi Vanetta, 1912Vertigo hiraseiVertigo hubrichti Pilsbry, 1934Vertigo japonicaVertigo kushiroensisVertigo meramecensis Van Devender, 1979Vertigo neglecta Arango in Poey, 1856Vertigo oralis Sterki, 1890 - Palmetto VertigoVertigo oscariana Sterki, 1890 - Capital VertigoVertigo occulta Vanetta, 1912Vertigo parcedentata (Braun, 1847)Vertigo rugosula Sterki, 1890 - Striate VertigoVertigo teskeyae Hubricht, 1961 - Swamp VertigoVertigo torrei Aguayo & Jaume, 1934Vertigo ultimathule Proschwitz, 2007
