3. Opazon frigidum Macek, 1995

Figs 3, 6, 11, 13, 14.

Opazon frigidum Macek, 1995: 83 .

MATERIAL EXAMINED: Estonia. ♂ (TUZ): Torma vald, 13.VI.1988, G. Dlusskiy leg .; ♀ (TUZ): Tartu, Raadi gravel pit, 58.393°N 26.737°E, 23.IX.2017, V. Soon leg .; ♂ (TUZ): Tähtvere raba 58.3972°N 26.6318°E, YPT, 16.VI.2017, V. Soon leg . Russia. ♂ (ZMUM): Kaliningrad Area, Kurshskaya Kosa (= Curonian Spit) National Park, 55°09’16.83'’N, 20°51’27.03'’E, Rybachiy, 24.VII– 4.VIII.2006, V. Kolyada leg .; ♀ (ZIN): Murmansk Area, Bol’shoy Vudyavr Lake, 20.VIII.1931, A. Fridolin leg. ; ♀ (ZIN): Komi Republic, 70 km S of Vorkuta, 11.VIII.1972, D. Kasparyan leg. ; ♀ (ZIN): 5 km NW of Sivaya Maska Station, 7.VIII.1961, K. Gorodkov leg. ; 3 ♂♂ (ZIN): Leningradskaya Area, Roshchino, 25.VI.1980, V. Trjapitzin leg ; ♂ (ZMUM): Vladimir Area, Petushinskiy District, Gnezdino Village, 18.VI.1971, V. Alekseev leg .; ♂ (ZMUM): Moscow Area, Moscow City, 5.VII.1988, V. Kolyada leg .; ♂ (ZMUM): Mytistshi, 19.VI.1933, V. Kostylev leg.; ♀ (ZIN): Samara Area, Kinel’ District, Domashka Village, 18.VIII.2008, V. Chemyreva leg .; ♂ (ZIN): Sverdlovskaya Area, Nizhniy Tagil, VI.1971, Lebedkina leg .; ♀, 5 ♂♂ (ZMUM): Krasnoyarsk Prov., Taymyr Peninsula, Agapa River, 13.VIII.1973, V. Zherikhin and I. Sukacheva leg .; ♀ (ZMUM): Taymyr Peninsula, Khatanga, Antardakh Village, 5.VIII.1971, V. Zherikhin and I. Sukacheva leg. ; ♂ (ZMUM): Taymyr Peninsula, Khatanga, Syndaska Bay, 16.VIII.1971, A. Rasnitsyn and V. Zherikhin leg .; 7 ♀♀ (ZMUM): Taymyr Peninsula, Putorana Plateau, 550 m, 23.VII–13.VIII.1996, A. Babenko and O. Makarova leg. ; ♀, 4 ♂♂ (ZMUM): Taymyr Peninsula, near Taymyr Lake, 25.VII–18.VIII.1994, soil traps, K. Makarov leg. ; ♀ (ZIN): Buryatia, Malyy Kunaley, Khilok River, 5.VII.1970, D. Kasparyan leg. ; ♀ (ZIN): Republic of Yakutia, Amga Village, 8.VIII.1925, V. Bianki leg .; ♀ (ZIN): 50 km NWW of Yakutsk, 3.VII.1970, D. Kasparyan leg. ; ♀ (ZMUM): Central Yakutia, 5.VIII.1990, V. Alekseev leg .; ♀, 3 ♂♂ (ZMUM): Republic of Yakutia, Srednekolymsk, 154°E 67°30’N, 18.VI–13.VII.1991, V. Alekseev leg. ; ♀, ♂ (ZMUM): Amur Area, Zeya Nature Reserve, 8–9.VIII.1978, V. Alekseev and S. Kurbatov leg .; ♀ (ZMUM): Amur Area, Tukuringra mountains, 12.VIII.1981, V. Alekseev leg .; 24 ♀♀, 15 ♂♂ (ZIN): Khabarovsk Prov., Udyl’ Lake, 2931. VIII.1970, D. Kasparyan leg. ; ♀ (ZMUM): Sakhalin Area, Sakhalin Is., Firsovo, 28.VI.1972, I. Sukacheva leg . Kazakhstan. 2 ♀♀ (ZIN): Karaganda Province, Kenderlyk River, 16.VI.1961, V. Tobias leg . Mongolia. 2 ♂♂ (ZIN): Tarbagatay Mountains, Uliyn-Daba Pass, 17.VII.1975, V. Sugonyaev leg .

VARIATIONS. Body dark brown to pale brown; radial vain obliterated to distinct at apex, 0.50–0.83 times as long as marginal vein; mandibles 0.6–0.7 times as long as pleurostomal distance. Females pterygopolymorphic (Figs 13, 14). Female A4–A7 as long as wide to weakly transverse.

DISTRIBUTION. Sweden, Poland, Czech Republic, * Estonia, Russia (European part, *Ural, Western Siberia, *Eastern Siberia, *Far East), * Kazakhstan, * Mongolia.