A new species and a key to Greek Praon Haliday (Hymenoptera, Braconidae, Aphidiinae)

The genus Praon Haliday in Greece consists of 6 species, the newly described R orpheusi included (Greece, Bulgaria). The new species emerged from the aphid Macrosiphum (Macrosiphum) rosae (Linnaeus) infecting Rosa sempervirens L. and Rosa caesia Sm. It is diagnosed and illustrated with photographs from the scanning electron microscope and line drawing. Furthermore, a key for the identification of species of Praon occurring in Greece is given, followed by photographs from the scanning electron microscope and line drawings. Finally, the parasitoid-aphid-plant associations of the Greek species mentioned in the key, some of which have also been found in Bulgaria and Turkey, are presented.