Hydrotaea unispinosa Stein, 1898

Vikhrev, Nikita E. & Makovetskaya, Ekateryna V., 2020, An extended list of Fanniidae and Muscidae (Diptera) of Belarus, Amurian Zoological Journal XII (3), pp. 260-274 : 265

38. Hydrotaea unispinosa Stein, 1898 — NEW

Material: Vitebsk reg.: Orsha env., 54.555°N 30.630°E, 10 June 2019, N. Vikhrev, 1♂, 1♀ .

Remarks. The taxonomy of Hydrotaea unispinosa Stein, 1898 (= H. silva Hsue, 1976 = H. gandakiana Shinonaga, 1994 ) was discussed in ( Vikhrev, Gomyranov 2014). The remarkably widespread distribution of this species was discussed in ( Vikhrev, Sorokina 2017). H. unispinosa was known from 3 ecozones: Nearctic (type locality), Canada and USA from East to West between 40°N and 50°N; Oriental, foothills in the northern part of the ecozone, India, Nepal, Thailand and Vietnam; Palaearctic: Sweden; China, Liaoning region; Russia, Altai Rep. and Primorsky regions. Recently Vikhrev found that H. unispinosa is common in Primorsky region and Elena Erofeeva (ZMUM) collected 2 males in Europe, Moscow region (unpublished data). Thus, Belarus is the third European country from which species was reported. We collected it in a woody gully overgrown with thick herbs and with a small stream at gully bottom. According to our observations, H. unispinosa is attracted to the trampled grass and the human body.