Published online by Cambridge University Press: 31 May 2012
The following new species and subspecies of Dioryctria Zeller are described: D. pentictonella, related to D. baumhoferi Heinrich, from buds of young Pinns ponderosa in the interior region of British Columbia; D. pentictonella vancouverella from buds of P. contorta and of several introduced species of Pinus in coastal British Columbia; D. okanaganella, related to D. ponderosae Dyar, from old pitch nodules and blister rust on Pinus ponderosa in the interior of British Columbia and in Washington.