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Biology of Bracon cephi (Gahan) (Hymenoptera: Braconidae), An Important Native Parasite of the Wheat Stem Sawfly, Cephus cinctus Nort. (Hymenoptera: Cephidae), in Western Canada1

Published online by Cambridge University Press:  31 May 2012

W. A. Nelson  and
C. W. Farstad
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Extract

During the past 25 years the wheat stem sawfly, Cephus cinctus Nort., has become one of the most destructive pests of wheat in the Prairie Provinces. Annual losses in the wheat-growing area of Saskatchewan have been estimated as high as 17 million bushels (King and McDonald, 1944). There are, however, several native parasites of this pest, and of these Bracon cephi (Gahan) [Microbracon cephi Gahan] is the most important. In some areas this parasite has been very effective in reducing severe sawfly infestations.

Type
Articles
Information
The Canadian Entomologist , Volume 85 , Issue 3 , March 1953 , pp. 103 - 107
Copyright
Copyright © Entomological Society of Canada 1953

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References

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