REVISION OF THE NEARCTIC SPECIES OF PLATYCHEIRUS (DIPTERA, SYRPHIDAE)

Abstract

AbstractThe 70 species of Platycheirus (including Carposcalis, Pyrophaena, and much of Melanostoma of North American authors) occurring in the Nearctic Region north of Mexico are revised. Twenty-three species are described as new and new names are proposed for two species. Eighteen new synonyms and 14 new combinations are proposed; one variety name is given specific status. Six palaearctic species are recorded from North America for the first time, and one nearctic species from Europe, for a total of 23 holarctic species.