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A Field Key to the Species of Cinara (Homoptera: Aphididae) of Canada East of the Rockies1

Published online by Cambridge University Press:  31 May 2012

G. A. Bradley
G. A. Bradley
Affiliation:
Dominion Entomological Laboratory, Indian Head, Saskatchewan
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Extract

Aphids of the genus Cinara found in Canada east of the Rockies are, with few exceptions, large, dark in colour, and compact in form. They live entirely on coniferous hosts and each species is restricted either to a single species of plant, or to plants of the same genus. Their unvarying choice of a host plant makes it possible to separate the species into groups according to the genus of plant on which they occur; this characteristic is used in the following key.

Type
Articles
Information
The Canadian Entomologist , Volume 83 , Issue 12 , December 1951 , pp. 333 - 335
Copyright
Copyright © Entomological Society of Canada 1951

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References

1 Contribution No. 19, Division of Forest Biology, Science Service, Department of Agriculture, Ottawa, Canada.