#2
It is possible to download a pdf of this key, but it would use a great deal of ink to print it in its current format. The key is designed (and works well) as an interactive key to Luciliinae, Chrysomyinae and Calliphorinae. (Most of the European genera and many European species are included). Polleniinae and Melanomyiinae are just keyed to genus. The photographic illustrations are excellent.