Most recent taxonomic treatment. Rognes (1991a).
Material. Aragatsotn: River Kasakh at Alagyaz, N 40°40 E44° 18, 2050 m, 18.vi.2010, 1 ♂ [2528]; River Kasakh between Alagyaz and Aparan, N40°37 E44° 20, 1950 m, 19.v.2012, 1 ♀ [2529]. Kotayk: Tsakhkadzor, Mt Teghenis, heath, N40°32 E44°41, 2400 m, 17.vii.2011, 1 ♂ [2527].
Distribution. All over the Palaearctic Region; only Alaska and Greenland in the Nearctic Region.