A New Species of the Hoverfly Genus Eumerus Meigen 1822 (Diptera, Syrphidae) from the Territory of Turkmenistan

A new hoverfly species of the genus Eumerus Meigen 1822 is described and illustrated from southeastern Turkmenistan: Eumerus glabropterus Barkalov sp. n. The new species is close to species of the strigatus group, which is outlined by the following taxonomic characters: eyes of male touching on frons; legs with neither obvious outgrowths nor modifications; hind tibia in basal third with small, pressed, black spinules; abdomen is completely black (sometimes with a yellow hind rim of sternum IV), almost always with three pairs of gray spots. The new species is easily distinguished from all representatives of this and other species groups by the unique structure of the male genitalia, and, in addition, from the most similar one, Eumerus acuticornis Sack 1933, by a narrower frons, the absence of long hairs from the lower surface of the hind femora, and a gentle notch at the posterior edge of sternite IV.