@article {25,
	title = {The morphology and inter-relationship of the genera of syrphid flies, recent and fossil},
	journal = {Transaction of the Zoological Society of London},
	volume = {26},
	year = {1949},
	month = {05/1949},
	pages = {257-408},
	keywords = {Eristalinae, Microdontinae, Syrphidae, Syrphinae},
	author = {Hull, Frank M.}
}
@article {305,
	title = {Syrphidae von Madagaskar (Dipt.)},
	journal = {Verhandlungen der Naturforschenden Gesellschaft in Basal},
	volume = {81},
	year = {1971},
	pages = {223-318},
	keywords = {Eristalinae, Megodon, Megodon stuckenbergi Keiser, Microdon (Hovamicrodon), Microdon (Hovamicrodon) silvester Keiser, Microdontinae, Syrphidae, Syrphinae},
	author = {Keiser, Fred}
}
