Distribution; world
This is essentially a northern and central European species, its range extending as far north as central Fennoscandia, south to mid France and eastwards to Romania and the Ukraine (Koster, 1986); also reported from Japan (Hirashima, 1977; Ikudome, 1989).
AT, BE, CH, CZ, DE, DK, EE, FI, FL, FR, GB, HU, IT, LT, LU, LV, NL, PL, RO, SE, SK, UA, JP
Conservation status; world
Conservation satus: CH - RDB3 (VU), CZ - RDB1 (CR), DE1 - RDB3 (VU), DE2 - RDB3 (VU), NL - RDB3 (VU), EU - RDB-DD (Nieto et al, 2014)