Vitrea pygmaea
Shell of Vitrea pygmaea
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Superfamily:	Gastrodontoidea
Family:	Pristilomatidae
Genus:	Vitrea
Species:	V. pygmaea
Binomial name
Vitrea pygmaea (Boettger, 1880)
Synonyms
Hyalinia pygmaea O. Boettger, 1880

Vitrea pygmaea is a species of gastropods belonging to the family Pristilomatidae.^[1][2]

The shell is very small: 0.7-0.8 mm x 1.4-2.1 mm. It is colourless, sometimes slightly pale greenish yellow. The shell contains 3.5-4 whorls. The body whorl is twice as wide as penultimate whorl, or even more. The umbilicus is very wide and perspectivical, all whorls well visible inside. This species can usually not be confounded with any other species.

The species inhabits Turkmenistan, Northern Iran, Iraq-Kurdistan, Caucasus region, Crimea, Turkey, Bulgaria, Croatia, Albania, Greece, possibly also Italy. The type locality is contained in Georgia.

This species can be found in deciduous oak/hornbeam and pinetree forests with pH 4.5. It can survive continuous periods of drought. In Bulgaria it occurs between 300 and 1400 m.^[3][4]

• Pintér, L. (1972). Die Gattung Vitrea Fitzinger, 1833 in den Balkanländern (Gastropoda: Zonitidae). Annales Zoologici, 29 (8): 209–315. Warszawa
• Riedel, A. (1995). Zonitidae sensu lato (Gastropoda, Stylommatophora) der Türkei. Übersicht der Arten. Fragmenta Faunistica, 38 (1): 1-86. Warszawa
• Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. Sofia/Moskva (Pensoft). 312 pp., 142 plates
• Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017.

• Boettger, O. (1880). Kaukasische Mollusken gesammelt von Herrn Hans Leder, z. Z. in Tiflis. Jahrbücher der Deutschen Malakozoologischen Gesellschaft. 7 (2): 109-150, pl. 4. Frankfurt am Main

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