Prodiamesa olivacea Meigen

Prodiamesa olivacea Meigen, 1818: 29; Goetghebuer 1939: 2; Thinemann 1944: 625; Pagast 1947: 497–499, 540–54; Tshernovskij 1949: 107; Brundin 1952: 51, 1956: 65; Albu 1967: 24; Pankratova 1970: 108; Saether 1977: 74, 1983: 143; Makarchenko 1985: 98, 2006: 280, 482, 623; Makarchenko & Makarchenko: 1999: 241; Linevich et al. 2002: 65; Langton & Pinder 2007: 26; Ashe & O’Connor 2009: 328.

Material examined. Russia: 1 adult male, Russian Far East, Jewish Autonomous Region, Obluchie District, Teploye Lake of Bira River basin (Amur River basin), N 48º38’409’’, E 131º37’217’’, 5.VI. 2014, leg. E. Makarchenko ; 2 adult males, Khabarovsk Territory, Nanaisky District, Anyuisky National Park, Pihtsa River (tributary of Gassi Lake), Amur River basin, N 48.47.804, E 136.47.027, 22.V 2019, leg. N. Yavorskaya ; 1 adult male, Russia, Republic of Khakassia, Askizsky District, bank of a Zimnyi Stream, 53°25’05.6”N 89°45’25.6”E, 1.VIII.2020, leg. S. Dragan.

Comments. The species is described in detail by three stages of development from different regions of the Holarctic. Specimens from the Russian Far East and Eastern Siberia fit well with the available descriptions, and therefore we decided not to redescribe it. Below we provide data only on DNA barcoding.

Distribution. Widespread Holarctic species.