Canadian Forest Service Publications

Introduced pine sawfly. (Diprion similis Hartig) (Hymenoptera: Diprionidae). 2014. (Chapter 10 ) Lyons, D. B. Pages 115 to 125 in The use of Classical Biological Control to Preserve Forests in North America edited by Roy Van Driesche and Richard Reardon. Forest Health Technology Enterprise Team FHTET-2013-2.

Year: 2014

Issued by: Great Lakes Forestry Centre

Catalog ID: 35860

Language: English

Availability: PDF (request by e-mail)

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Plain Language Summary

This book chapter summarizes the current knowledge about the introduced pine sawfly. We discuss the taxonomy, distribution, damage and biology of the pest. In Canada, it was first discovered in the 1930s and now occurs in Manitoba and in all provinces eastward. The sawfly is primarily a pest of plantations, nurseries, and ornamentals, but it is also a serious threat to eastern white pine forests. We outline the history of biological control efforts, including a list of the known species of parasitoids. Three species of exotic parasitoids have become established in N. American sawfly populations and seem to regulate its density. Thus, outbreaks are usually of short duration and result in limited tree mortality.