B. schrencki is found from Wigry (NE. Poland) (Krzysztofiak, 1992) through the whole Russian and Siberian taiga, to the Pacific coast, Kamchatka, Japan, Sakhalin and Kuril Is. It could be a common species locally as Mänd et al. (1999) found B. schrencki profusely in several locations in Estonia, in natural surroundings as in cultivated areas.
P. Rasmont