- Watson, E. B., and H. Raizenne. 1948. Province of Ontario: southern Ontario . Canada Department of Agriculture, Science Service, Division of Entomology, Forest Insect Survey, Annual Report 1947:41-47.
- Watson, E. B., and H. Raizenne. 1949. Province of Ontario: southern Ontario . Canada Department of Agriculture, Science Service, Division of Entomology, Forest Insect Investigations, Forest Insect Survey, Annual Report 1948:45-53.