Description of a new Ornithomya Latreille, 1802 species (Diptera: Hippoboscidae) from Simushir Island, Russia

Louse fies from the genus Ornithomya Latreille, 1802 (Diptera: Hippoboscidae) inhabit mainly the middle latitudes of the Old World. Te fauna of this genus is fairly extensive. Despite the continued interest of researchers in this group, the knowledge of the fauna of this genus in Russia remains insufcient. A new species of the genus Ornithomya, O. nazarovi Yatsuk, Matyukhin et Nartshuk, sp. n., is described from Simushir Island (Sakhalin Region of Russia). Te new species difers from other Ornithomya species inhabiting Russia and Japan in its combined length of head and thorax, length of the wings, number and morphology of setae on the scutellum, arrangement of microtrichia on the wings and colour of the dorsal and ventral sides of the thorax.