Published online by Cambridge University Press: 31 May 2012
The “spinach leaf miner” – referred to in North American literature consistently as Pegomyia hyoscymi (Panzer) or, in early years, as P. vicina Lintner and in European literature under a variety of names (hyoscyami, atriplicis Goureau, chenopodii Rondani, betae Curtis, spinaciae Holmgren, etc.) – is known to represent a complex in Europe of at least two species, with different morphology and host preferences. The present paper records the presence of these two species in North America. points out the recognition characters of the Nearctic forms, and summarizes the known ecological and outbreak data for the species in Canada