@article {439,
	title = {Palaearctic species of the genus Eumerus Mg. (Diptera, Syrphidae)},
	journal = {Horae Societatis Entomolgicae Unionis Soveticae},
	volume = {48},
	year = {1961},
	pages = {181-229},
	keywords = {Diptera, Eumerus, Key to species, Syrphidae},
	author = {Stackelberg, A.A.}
}
