Canadian Forest Service Publications

Acantholyda erythrocephala L., pine false webworm (Hymenoptera: pamphiliidae). 2013. Lyons, D.B. (Chapter 7)Pages 54-56 in Biological Control Programmes in Canada 2001-2012. P.G Mason and D.R. Gillespie, editors. Oxfordshire, U.K., CABI Press. 504 p.

Year: 2013

Issued by: Great Lakes Forestry Centre

Catalog ID: 35281

Language: English

Availability: PDF (request by e-mail)

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Plain Language Summary

This book is the fifth in a series summarizing biological control programmes against insects and weeds in Canada and covers the period 2001 to 2012. In Chapter 7 we discuss efforts to control pine false webworm. Between 2000 and 2004, a parasitoid was released in a red pine plantation in Ontario, but collapse of the webworm population shortly afterwards made it difficult to determine whether it successfully established. We isolated a potential baculovirus from the balsam fir sawfly and applied it on individual trees in 2002 and 2003. Larval survival was reduced by 57% but foliage protection was not significant. Results from an aerial application of the virus were inconclusive due to population fluctuations in the treatment plots. The investigation of other potential biological control agents includes genetic characterization of bacterial communities associated with the sawfly. A female-produced sex pheromone has been identified, which is expected to be useful in assessing the effectiveness of biological control programs.