Canadian Forest Service Publications

Pine false webworm.(Acantholyda erythrocephala[L.]) (Hymenoptera: Pamphiliidae) (Chapter 12). 2014. Lyons, D.B. Pages 245 to 254 in Roy van Driesche and Richard Rearedon. (eds) The Use of Classical Biological Control to Preserve Forest in North America. USDA Forest Service. Forest Health Technology Enterprise Team, Morgantown, West Virginia FHTET-2013-2 USDA.

Year: 2014

Issued by: Great Lakes Forestry Centre

Catalog ID: 35859

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 false webworm, a defoliator of various species of pine. We discuss the taxonomy, distribution, damage and biology of the pest. In Canada, it was first discovered in Ontario in 1963 then appeared to become more of a problem in the 1990s when outbreaks were detected for the first time in stand of mature pine, as well as in younger trees. We outline the potential biological control options. Two strains of North American egg parasitoids were released against the webworm in Ontario between 2002 and 2004. Result were difficult to assess because the population collapsed shortly afterwards. We conclude that M. hertingi , which is the most abundant parasitoid of the pine false webworm in European populations, has the greatest potential as a classical biological control agent against the pine false webworm, but it is difficult to rear in the laboratory.