@article {135,
	title = {Diptera. Family Syrphidae},
	journal = {Handbook for the identification of British Insects},
	volume = {10},
	number = {1},
	year = {1953},
	pages = {1-98},
	keywords = {Chrysotoxum, phylogenetic notes},
	author = {Coe, R. L.}
}
@inbook {604,
	title = {Family Syrphidae},
	booktitle = {A catalog of the Diptera of America north of Mexico},
	volume = {Agriculture Handbook no. 276},
	year = {1965},
	pages = {557-625},
	publisher = {United States Department of Agriculture},
	organization = {United States Department of Agriculture},
	address = {Washington},
	keywords = {Chrysotoxum, phylogenetic notes},
	author = {Wirth, Willis W. and Sedman, Yale S. and Weems, Howard V. Jr.},
	editor = {Stone, Alan and Sabrosky, Curtis W. and Wirth, Willis W. and Foote, Richard H. and Coulson, Jack R.}
}
