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Notes on Parasitism of a Spruce Sawfly, Diprion polytomum (Htg.) (Hymenoptera: Diprionidae), in Czechoslovakia and Scandinavia1

Published online by Cambridge University Press:  31 May 2012

L. R. Finlayson  and
Thelma Finlayson
L. R. Finlayson
Affiliation:
Entomology Laboratory, Belleville, Ontario
Thelma Finlayson
Affiliation:
Entomology Laboratory, Belleville, Ontario
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Extract

The European spruce sawfly, Diprion hercyniae (Htg.), was first found in Canada in 1930. An aerial survey in the following year showed that it was causing severe defoliation in an area of about 2,500 square miles in the Gaspé Peninsula, Quebec. In succeeding years it spread rapidly over wide areas in Eastern Canada (see, e.g., Baird 1937, Balch 1937). The work reported below was part of an attempt to control the sawfly by biotic agents.

Type
Articles
Information
The Canadian Entomologist , Volume 90 , Issue 10 , October 1958 , pp. 584 - 589
Copyright
Copyright © Entomological Society of Canada 1958

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References

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