Material. 5 apt. and imm., No. 10258, SSWBer, Carex aquatilis var. minor Boott, 19.vii. 2012, on upper surface of leaves along central vien and on stem near top (imm. were transferred to plants in laboratory conditions, where on 26.vii. 2012 another 1 apt. was obtained).
Distribution outside Chukotka AO. Europe, North America, Russian Far East.