@article {148,
	title = {Notes on Syrphidae (Diptera)},
	journal = {The Canadian Entomologist},
	volume = {59},
	year = {1927},
	pages = {205-207},
	keywords = {Chrysotoxum columbianum new species, Chrysotoxum minor new species, Xylota lovetti},
	author = {Curran, C.H.}
}
@article {2152,
	title = {Notes on Syrphidae (Diptera). III},
	journal = {Entomologist{\textquoteright}s monthly Magagazine},
	volume = {75},
	year = {1939},
	pages = {104-109},
	author = {Collin, J.E.}
}
@article {2689,
	title = {Larval stages of 17 rare and poorly known British hoverflies (Diptera: Syrphidae)},
	journal = {Journal of Natural History},
	volume = {25},
	year = {1991},
	pages = {945-969},
	url = {http://www.informaworld.com/smpp/content~db=all~content=a770637015~frm=abslink},
	author = {Rotheray, G. E.}
}
@article {518,
	title = {Keys to Nearctic Syrphidae (Diptera)},
	year = {1991},
	pages = {88},
	address = {unpublished keys},
	author = {Thompson, F. C.}
}
@article {462,
	title = {<i>Brachyopa obscura</i> Thompson \& Torp, 1982 - neu f{\"u}r Deutschland (Diptera: Syrphidae)},
	journal = {Studia dipterologica},
	volume = {8},
	number = {1},
	year = {2001},
	pages = {257-260},
	keywords = {Brachyopa, diagnostic characters, faunistics, new record, Palaearctic, Syrphidae, vulnerability},
	author = {Stuke, Jens-Hermann}
}
@article {2736,
	title = {Uber eine ungewohnliche Brachyopa Meigen, 1822 (Diptera, Syrphidae) aus Tunesien},
	journal = {Dipteron},
	volume = {4},
	year = {2001},
	pages = {37-42},
	author = {Kassebeer, C.}
}
