Златанов, Б. 2023. New subspecies of Eumerus aristatus Peck, 1969 (Diptera, Syrphidae) from Karabas Mountains (Eastern Kazakhstan). Fundamental and Experimental Biology. 111, 3 (Sep. 2023), 68–72. DOI:https://doi.org/10.31489/2023bmg3/68-72.