Nanna articulata (Becker, 1894)

Figs 74–81.

articulata Becker, 1894: 117 (Amaurosoma) . Type-locality: “Rothkirch” [=Czerwony Kościół (51.186N 16.061E)] (Poland).

Remarks. Noted by Gorodkov (1970: 449; 1986: 18) for European part of Russia without indicating specific locality.

Material examined. Moscow and Moscow Oblast: Izmaylovo (55.7867N 37.8350E, 55.7870N 37.8338E, 55.7872N 37.8365E), 11.V.2007, 11.V., 12. VI.2009, A.L. Ozerov (10 ♂♂, 9 ♀♀, ZMUM); Golitsyno (55.6496N 37.0117E), 21.V.1977, A. Shatalkin (1 ♂, ZMUM); Dmitrov env. (56.3163N 37.7258E), 27.V.2009, N. Vikhrev (1 ♂, ZMUM); Naro-Fominsk (55.3955N 36.7823E), 1.V.2008, D. Gavryushin (1 ♀, ZMUM); Tatarstan: Volzhsko- Kamskiy Reserve, Lake Raifa (55.897357N 48.733022E), 11 and 20.V.2005, Basov (2 ♀♀, ZMUM);

Diagnostic description. Body-length 3.5–4.5 mm. Head. Frons black in upper part and reddish-yellow in lower quarter. 2 orbital setae present. Antenna black. Postpedicel with acutely angled upper apical corner, approximately 3 times as long as wide, in male slightly wider than in female. Thorax black, extensively grey dusted. Proepisternum without hairs in central part. Katepisternum with 3 strong setae: anterior katepisternal seta black and the rest pale in male and all black in female. Legs yellow, only tarsi slightly darkened. Fore femur with 6–8 anteroventral setae (Fig. 74). Hind tibia without apical posteroventral seta. Wing clear. Abdomen black, greyish dusted. Male sternite 4 rectangular, approximately 2 times as long as wide (Fig. 75). Male sternite 5 with black lobes, as in Figs 78, 79. Epandrium, cerci and surstyli as in Figs 76, 77. Female sternite 8 as two small separate sclerites (Fig. 80).

Distribution. Russia (Fig. 81): Moscow and Moscow Oblast, Tatarstan.—Europe.