A new species of Systenus Loew (Dolichopodidae, Diptera) from Slovakia

Dolichopodid specimens were collected during a field work in Prešov town in 2019. Systenus slovakiensissp. nov. from anthropogenic habitats is described. Differential diagnoses are given and illustrated. A key to females of Systenus species of the Palearctic is provided. From all other Palaearctic species of this genus, the new species is distinguished by snow-white trochanters and black femora.