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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
Affiliation:
Pestology Centre, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia

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
Copyright
Copyright © Entomological Society of Canada 1972

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