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Range DescriptionThis is the most widely distributed Cochostoma species with an extent of occurrence of 550,000 km2. It lives in the eastern part of France (Inventaire National du Patrimoine Naturel (INPN)), probably in Belgium, in southern Germany (Kerney et al. 1983), in Austria (Klemm 1973), in northern Italy (Alzona 1971), in Switzerland (Turner et al. 1998), in Slovenia (Bole 1994), in Croatia (Soós 1994), in Bosnia-Hercegovina and Serbia (Tomic 1959) and in northern Montenegro (Varga 1980). The subspecies C. septemspirale heydenianum is distributed southwards from the Steiner Alpen, in Slovenia and in the Kapela Mts in Croatia. the subspecies C. septemspirale bosniense lives in eastern Bosnia, in Serbia and in Montenegro. The subspecies C. septemspirale riedeli was described from the Montenegrian- Serbian border zone. There are more than 200 known locations and there is no reason to suppose that the area of occupancy, extent of occurrence or the number of locations are declining or extremely fluctuating.