Orthacheta cornuta Loew 1863

Orthacheta cornuta (Loew, 1863)

Figs 8, 166–174.

cornuta Loew, 1863: 26 (Cordylura). Type-locality: “English River” (Canada, Ontario).

fuscipennis Hendel, 1930: 8 (Orthochaeta). Type-locality: “Klutchi” (Russia, Kamchatka Kray).

Remarks. Besides Hendel’s (1930: 8, as fuscipennis) record from Kamchatka, this species was recorded for the Russian Far East by Ozerov & Krivosheina (2014b: 215).

Material examined. Arkhangelsk Oblast: Nar'yan-Mar (67.631761N, 52.985770E), 7.VII.2008, N.E. Vikhrev (2 ♂♂, ZMUM); Kamchatka Kray: Bay Vestnik (51.4823N 157.5301E), 27.VII.1999, A. Leley, S. Storozhenko (1 ♀, ZMUM); Valley of Geysers (ca. 54.43N 160.15E), 12.VIII.1985, V. Zlobin (2 ♂♂, 1 ♀, ZISP); Komi: Schel'yaboj (66.29N 56.45E), 14.VIII.1978, Gorodkov (1 ♂, ZISP); Inta (66.0362N 60.1628E), 5.VIII.1985, Gorodkov (1 ♂, ZISP); Krasnoyarsk Kray: Igarka (67.457N 86.598E), Enisey, 30.VI.1967, Gorodkov (8 ♂♂, ZISP).

Diagnostic description. Body-length 5.0–7.0 mm. Head. Frons usually black in upper part and yellow in lower third or half. Postpedicel approximately 3 times as long as pedicel. Thorax black, grey dusted. Proepisternum with hairs in central part. Katepisternum with 3 strong setae, in ventral corner with yellow setae. Legs yellow, only tarsi darkened. Fore coxae with white hairs. Femora slender. Wing usually distinctly brownish. Abdomen black, greyish dusted. Male sternite 4 rectangular, 2 times as long as wide (Fig. 169). Male sternite 5 as in Fig. 166. Epandrium, cerci and surstyli as in Figs 167, 168.

Distribution. Russia (Fig. 170): Arkhangelsk Oblast and Komi (first record for Europe), Kamchatka Kray, Krasnoyarsk Kray, Primorskiy Kray.—North America.