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Xerotricha renei is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Geomitridae,MolluscaBase eds. (2023). MolluscaBase. Xerotricha renei (Fagot, 1882). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1002572 on 2023-09-21
Description The length of the shell attains 5 mm, its diameter 7 mm.
(Original description in Latin) The shell is solidly built and shaped in a rounded-convex form, variegated with shades of brown and gray. It features an open umbilicus that extends all the way to the apex. Its surface is marked by irregular fine ribs and striae, and it is adorned with minute dots within the spaces between the striae, as well as sparse hairs.
The spire is convex, ending in a prominent, nipple-shaped apex. It consists of five convex whorls that are separated by an impressed suture; the initial whorls increase slowly in size, while the remaining ones expand rapidly. The body whorl is larger, rounded, and becomes dilated and descending as it approaches the aperture.
The margins of the aperture lie close together, with the columellar margin slightly reflected over the umbilicus.
This species, dedicated to Jules-René Bourguignat, may be distinguished by its convex spire, the complete absence of any band or spotting, its color of an earthy yellow tinged with grayish tones, its whorls that increase in size differently, and its aperture that descends lower and is more regularly rounded, among other features. Fagot, P. (1882). Mollusques du Pic du Gar (Haute-Garonne). Bulletin de la Société d'Histoire Naturelle de Toulouse. 16: 66-78. Toulouse
Distribution This species is endemic to France and occurs off Haute-Garonne; also in French mainland, Spanish mainland and Central Europe.
References
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017