@article {13180,
	title = {<em>Descriptions of North American</em> [<em>sic</em>] dipterous insects},
	journal = {Journal of the Academy of Natural Sciences of Philadelphia},
	volume = {6},
	year = {1829},
	pages = {149{\textendash}178},
	author = {Say, T.}
}
@article {11522,
	title = {Descriptions of dipterous insects of the United States},
	journal = {Journal of the Academy of Natural Sciences of Philadelphia},
	volume = {3},
	year = {1823},
	pages = {9{\textendash}54},
	author = {Say, T.}
}
