@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} }