Pyramidula pusilla

Pyramidula pusilla is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Pyramidulidae.

Shell description
The width of the shell is up to 2.95 mm, the height is up to 2.25 mm. The shell has a low conical shape, broader than high. It is and tightly coiled. The apical whorls regularly increase. The umbilicus is 1/4 of the diameter (in some Spain localities 1/3). The growth lines are fine and narrow, sometimes weak. The colour is red brown becoming more grey with age.

Distribution
The geographical distribution of this species is mainly Mediterranean: western and central Europe, southeastern Europe, Caucasus, Central Asia and probably the Russian Far East.

Europe (not a complete list):
 * Great Britain
 * Ireland
 * Spain
 * Portugal
 * France - in Pyrenees
 * Belgium
 * Luxembourg
 * Liechtenstein
 * Germany
 * Austria
 * Hungary
 * Bulgaria
 * Czech Republic
 * Slovakia
 * Poland
 * Ukraine - in Carpathians, Podolian Upland and Crimean Mountains

Southwestern Asia (not a complete list):
 * Russia - in Caucasus
 * Georgia
 * Armenia
 * Azerbaijan
 * Israel

Central Asia:
 * Kazakhstan
 * Uzbekistan
 * Turkmenistan
 * Tajikistan