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Occurrence and Food of Some Coccinellids (Coleoptera) in Ontario Peach Orchards1

Published online by Cambridge University Press:  31 May 2012

Wm. L. Putman
Wm. L. Putman
Affiliation:
Canada Department of Agriculture, Vineland Station, Ontario
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Abstract

Ten species of the larger, primarily aphidophagous, coccinellids were present in peach orchards of the Niagara Peninsula. Adalia bipunctata (L.) and Coccinella trifasciata perplexa Mulsant were the commonest. All were most numerous in the spring while the green peach aphid, Myzus persicae (Sulzer), was present but their population densities were low at all times, apparently because suitable prey was scarce. They were not attracted to dense populations of the European red mite, Panonychus ulmi (Koch), and were of no importance as predators of peach pests.

At least 7 species were bivoltine but the second generation was only partial.

Type
Articles
Information
The Canadian Entomologist , Volume 96 , Issue 9 , September 1964 , pp. 1149 - 1155
Copyright
Copyright © Entomological Society of Canada 1964

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