@inbook {1809,
	title = {Fam. Syrphidae},
	booktitle = {Biologia Centrali Americana, Zoologia - Insecta - Diptera},
	volume = {3},
	year = {1891},
	pages = {1-56; 57-72; 73-78, pl. 1, 2, figs. 1-12},
	address = {London},
	url = {http://www.sil.si.edu/digitalcollections/bca/navigation/bca_16_03_00/bca_16_03_00select.cfm},
	author = {Williston, S.W.},
	editor = {Godman, F.D. and Salvin, O.}
}
@article {2922,
	title = {Review of the American xylotine syrphid-flies},
	journal = {Proceedings of the United States National Museum},
	volume = {69},
	year = {1926},
	pages = {1-52},
	url = {http://si-pddr.si.edu/dspace/bitstream/10088/15651/1/USNMP-69_2635_1926.pdf},
	author = {Shannon, R.C.}
}
@article {493,
	title = {Review of the genus <i>Sterphus</i> Philippi (Diptera: Syrphidae). Part I},
	journal = {Entomologica Americana},
	volume = {46},
	number = {2},
	year = {1973},
	pages = {185-240},
	keywords = {Sterphus, Sterphus (Ceriogaster), Sterphus (Ceriogaster) arethusa (Hull), Sterphus (Ceriogaster) rudis (Hull), Sterphus (Ceriogaster) spinosa (Shannon), Sterphus (Crepidomyia), Sterphus (Crepidomyia) coarctatus (Wiedemann), Sterphus (Crepidomyia) jamaicensis (Gmelin), Sterphus (Mutillimyia), Sterphus (Mutillimyia) auricaudatus (Williston), Sterphus (Sterphus), Sterphus (Sterphus) aurifrons Shannon, Sterphus (Telus), Sterphus (Telus) telus Thompson, Syrphidae, Xylotina},
	author = {Thompson, F. Christian}
}
@article {251,
	title = {Classification of Xylotini (Diptera, Syrphidae)},
	journal = {Acta Zoologica Fennica},
	volume = {156},
	year = {1978},
	pages = {1-153},
	keywords = {Arthropods},
	author = {Hippa, H.}
}
