Canadian Forest Service Publications
European spruce sawfly. (Gilpinia hercyniae [ Hartig]) (Hymenoptera: Diprionidae). 2014. (Chapter 12) MacQuarrie, C.J.K. Pages 135-144 in The Use of Classical Biological Control to Preserve Forests in North America. Roy van Driesche and Richard Reardon editors. USDA Forest Service. Forest Health Technology Enterprise Team, Morgantown, West Virginia FHTET-2013-2 USDA.
Issued by: Great Lakes Forestry Centre
Catalog ID: 35861
Availability: PDF (request by e-mail)
Plain Language Summary
This book chapter summarizes the current knowledge about European spruce sawfly. In Canada its range approximates that of its main host, black spruce. No large outbreaks of the European spruce sawfly have been reported in North America since 1945 and it does not currently cause economic losses or pose a risk to forest health in Canada. The taxonomy, distribution, damage, and biology of the pest are described. A summary is provided of the 35 parasitoids of European origin that were released in North America between 1933 and 1951. The impact of all insect biological control agents was overshadowed in both Canada and the US by a nuclear polyhedrosis virus GhNPV, which was assumed to be accidentally introduced in concert with parasitoids.