Global range
Native to Europe; north to Arkhangelsk, south to Crimea and Caucasus; forested south Urals; east to eastern Kazakhstan (Sysoev and Schileyko 2009); likely introduced to Madeira (Seddon 2008). Introduced to North America, including to Canada (BC, Ontario), where records are few and scattered. In the United States, this species is known from San Francisco and Alameda counties, California (Roth 1982, Roth and Sadeghian 2003), from drift of the Tioughnioga River, Cortland Co., New York (leg. F.W. Schueler, RGF collection), and naturalized at Ithaca, New York (Weigand and Jochum 2010). This species was recorded from Quincy, Massachusetts (Clapp 1912, Winslow 1922, Pilsbry 1948) but it was subsequently re-identified as another species, C. tridentatum (Roth 1982). Carychium minimum is likely more widespread in North America, and almost certainly in the northeastern U.S than currently known.
BC range
First found in a retail nursery at Cobble Hill on southern Vancouver Island in 2001 (RBCM coll., Forsyth 2004, Forsyth et al. 2008), this species may not yet be established in British Columbia (Grimm et al. 2010); no other records are known from BC and this location has not be revisited to confirm the persistence of the population.
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