@article {2099,
	title = {Taxonomic revision of aphid-killing flies on the genus Sphaerophoria in the Western Hemisphere (Syrphidae)},
	journal = {Miscellaneous publications of the Entomological Society of America},
	volume = {9},
	year = {1973},
	pages = {1-50},
	keywords = {Sphaerophoria, Sphaerophoria (Sphaerophoria), Sphaerophoria (Sphaerophoria) scripta (Linnaeus)},
	author = {Knutson, L.V.}
}
