Musca autumnalis Deg. in North America (Diptera: Muscidae)

Abstract

Musca domestica L., the house fly, has hitherto been the only species of the genus definitely known to occur in North America. West (1951) wrote: “This paucity of species in the New World is somewhat strange…it would not be surprising if one or more additional representatives of the genus Musca should sooner or later put in their appearance on the American scene.” An authentic record of a second species, M. autumnalis Deg. [=M. corvina Fab.], is therefore of considerable interest.