Published online by Cambridge University Press: 31 May 2012
Four new species of Dichrooscytus Fieber are described: flagellatus and rufusculus from British Columbia, and rostratus and rubidus from Alberta and British Columbia. New records for Canada are: convexifrons Knight, flavescens Knight, irroratus Van Duzee, latifrons Knight, rainieri Knight, ruberellus Knight, and rufipennis Fallen. Key to species, additional records on distribution and host plants, and illustrations of the male genitalia of all the species occurring in Canada are presented.