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THE BIOLOGICAL CONTROL ATTEMPT AGAINST THE EUROPEAN WHEAT STEM SAWFLY, CEPHUS PYGMAEUS (HYMENOPTERA: CEPHIDAE), IN ONTARIO

Published online by Cambridge University Press:  31 May 2012

Bryan P. Beirne
Bryan P. Beirne
Affiliation:
Pestology Centre, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia
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Abstract

There are no valid reasons to believe that the allegedly successful biological control attempt against Cephus pygmaeus (L.) in Ontario was in fact a success. There are definite indications that it was a failure.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 7 , July 1972 , pp. 987 - 990
Copyright
Copyright © Entomological Society of Canada 1972

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