@article {567, title = {The status of Melanostoma dubium (Diptera, Syrphidae).}, journal = {Dipterists Dig. (2nd Ser.)}, volume = {3}, year = {1977}, pages = {79-87}, keywords = {Diptera, hoverfly, Syrphidae}, author = {MacGowan, I and Gilbert, F.S and Rotherhay, G.E} }