Amblypsilopus pilosus (Negrobov, 1979) Mesorhaga pilosa Negrobov 1979: 188. Mesorhaga janata Negrobov 1984: 32, syn. nov. Type locality: Japan, Ofune. Amblypsilopus janatus: Bickel 1994: 373. Material examined. 3♂, 3♀, Primorye, Khasansky Distr., Ryazanovka, 12, 14.08.1987, V. N. Makarkin (FCBV). Distribution. Type locality: Russia, Primorye, Komarovka. Palaearctic: Japan, Russia (Primorye). Notes. Negrobov (1984) distiguished Amblypsilopus janatus (males described from Japan) from A. pilosus (males and females described from Primorye) by right vs. acute angle between M 1+2 and M 1. Descriptions of the two species including male genitalia figured have no significant differences. The material examined has right angle between M 1+2 and M 1 in males and acute angle in females. It is worth noting that the line drawing of A. pilosus is inaccurate (Negrobov 1979). The wing of all Primorian male specimens examined is identical to wing pictured for A. janatus. Therefore, the two names are considered here as synonyms. The species seems not uncommon in both Primorye and Japan (Grichanov 2020; Grichanov, Selivanova 2021; Negrobov 1979; 1984).

Published as part of Grichanov, Igor Ya., 2022, New records of Dolichopodidae (Diptera) from Primorsky Territory, Russia, pp. 48-60 in Amurian Zoological Journal XIV (1) on page 49, DOI: 10.33910/2686-9519-2022-14-1-48-60, http://zenodo.org/record/11088990