Treherne, R.C. 1916 A preliminary list of parasitic insects known to occur in Canada.. Report of the Entomological Society of Ontario 46th Annual Report: 178-193.

Notes: Species listed include Aulacaspis rosae, Chionaspis pinifoliae, C. salicis, Coccus hesperidum, Eriopeltis festucae, Eulecanium caryae, E. cerasifex, E. fitchii, E. fletcheri, Kermes pubescens, Lepidosaphes ulmi and Pulvinaria innumerabilis.