@article {406,
	title = {The phylogeny and systematics of European predacious Syrphidae (Diptera) based on larval and puparial stages},
	journal = {Zoological Journal of the Linnaean Society},
	volume = {95},
	number = {1},
	year = {1989},
	pages = {29-70},
	keywords = {cladistics, Diptera, Europe, larva, phylogeny, predacious, puparia, Syrphidae, Syrphinae, Systematics},
	author = {Rotheray, Graham E. and Gilbert, Francis S.}
}
@book {231,
	title = {Hoverflies},
	year = {1993},
	pages = {67},
	publisher = {Richmond Publishing Co. Ltd.},
	organization = {Richmond Publishing Co. Ltd.},
	address = {Slough, England},
	keywords = {Great Britain, hoverflies, Syrphidae},
	author = {Gilbert, Francis S.}
}
