title: Three new species of the Merodon ruficornis group (Diptera: Syrphidae) discovered at the edge of its range
abstract: Further revision of material from the Merodon ruficornis group (Diptera: Syrphidae) revealed three new species, M. acutus Vuji et Radenkovi sp. nov. from Russia, M. fulvitarsis Vuji et Radenkovi sp. nov. from Iran, and M. trispinus Vuji et Radenkovi sp. nov. from Turkey. We provide an upgraded and illustrated identification key for the species of the group, as well as distribution maps for the new species. Moreover, we describe the female of M. portschinskyi Stackelberg, 1924. These new descript
journal: Zootaxa