Orthacheta pilosa Zetterstedt 1838

Orthacheta pilosa (Zetterstedt, 1838)

Figs 175–178, 182, 183.

pilosa Zetterstedt, 1838: 732 (Cordylura). Type-locality: “Lycksele... Naestansjö... (Lappon... Umensis... Westrogoth.)” (Sweden).

Remarks. Recorded by Gorodkov (1970: 449) for European part of Russia without indicating specific locality, and by Humala & Polevoi (2009: 72) from Karelia. Recorded in the Russian Far East by Ozerov & Krivosheina (2014b: 215).

Material examined. Chukotka: bank of Anadyr River (64.72N 175.21E), 25.VI.–19.VII.2014, А. Barkalov (1 ♂, ZMUM); Kamchatka Kray: Valley of Geysers (ca. 54.43N 160.15E), 12.VIII.1985, V. Zlobin (2 ♂♂, 1 ♀, ZISP); Karelia: Primorskiy (66.5463N 33.1036E), 3 and 7.VII.2010, A.L. Ozerov (2 ♂♂, 1 ♀, ZMUM); Poyakonda (66.5898N 33.8210E), 8.VII.2010, A.L. Ozerov (3 ♂♂, 4 ♀♀, ZMUM); Komi: Schel'yabozh (66.29N 56.45E), 14.VIII.1978, Gorodkov (2 ♀♀, ZISP); Ust-Tsilma (ca. 65.45N 52.11E), 10.VIII.1978, Gorodkov (1 ♂, ZISP); Krasnoyarsk kray: Taimyr Biosphere Reserve, Ary-Mas field station (72.5N, 101.94E), 14 m, 10– 22.VII.2010, A. Barkalov (2 ♂♂, 2 ♀♀, in ISEA and ZMUM); Kursk Oblast: Zorino (51.1720N 36.3535E), 14.V.2008, K. Tomkovich (1 ♂, ZMUM); Leningrad Oblast: Yaschera (58.8945N 29.8206E), 20.VI.1959 and 6.VI.1960, A. Stackelberg (1 ♂, 1 ♀, ZISP); Magadan Oblast: Sokol env. (59.92N 150.71E), 11–19.VII.2014, N. Vikhrev (1 ♀, ZMUM); Moscow Oblast: Burtsevo (55.9766N 35.5902E), 13.V.2010, A.L. Ozerov (1 ♀, ZMUM); Ivanovskoe (55.9262N 35.6198E, 55.9253N 35.6129E), 15.VI.2006, 11.VI.2011, A.L. Ozerov (2 ♀♀, ZMUM); Dmitrov env. (56.3163N 37.7258E), 27.V.2009, N. Vikhrev (1 ♂, ZMUM), Porechie (55.7157N 35.5553E), 12.VI.1903, Bianki (1 ♀, ZISP); Novgorod: (58.5462239N 31.2574768E), 22.VI.1975, Gorodkov (1 ♀, ZISP); Tyumen' Oblast: Lake Varchaty (64.8618N 68.87681E), 29.VIII. and 1–2.IX.1925, Fridolin (5 ♀♀, ZISP); Shapsha env. (61.087N 69.442E), 14–16.VII.2010, K. Tomkovich (1 ♂, 1 ♀, ZMUM); Vladimir Oblast: (59.06N 40.46E), 5.VI.2011, N. Vikhrev (1 ♂, ZMUM).

Diagnostic description. Body-length 4.5–8.0 mm. Head. Frons usually black in upper part and yellow in lower third or half. Postpedicel approximately 2.5 times long as pedicel. Thorax black, grey dusted. Proepisternum with hairs in central part. Katepisternum with 3 strong setae, in ventral corner with black setae. Legs yellow, only tarsi darkened dorsally. Fore coxae with black setae. Femora slightly thickened. Wing tinged with brownish.

Abdomen black, greyish dusted. Male sternite 4 slightly longer than wide (Fig. 183). Male sternite 5 as in Fig. 182. Epandrium, cerci and surstyli as in Figs 175, 176.

Distribution. Russia (Fig. 178): Chukotka, Kamchatka Kray, Karelia, Komi, Krasnoyarsk Kray, Kursk Oblast, Leningrad Oblast, Magadan Oblast, Moscow Oblast, Novgorod, Tyumen' Oblast, Vladimir Oblast.—Northern and central Europe, Mongolia.