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Description of the Immature Stages of Pulvinaria vitis (L.) and P. innumerabilis (Rathvon) (Homoptera: Coccoidea), with Notes on the Habits of these Species in Ontario, Canada1

Published online by Cambridge University Press:  31 May 2012

J. H. H. Phillips
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Extract

In a recent study of scale insects of the genus Pulvinaria in the peach growing areas of southern Ontario, four species were identified: P. vitis (L.), P. innumerabilis (Rathvon), P. acericola (Walsh and Riky), and P. floccifera (Westwood). Of these, only the first two, P. vitis and P. innumerabilis, were abundant enough to be of economic importance and because they resemble one another, especially when the ovisac is present, they may easily be confused.

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 5 , May 1962 , pp. 497 - 502
Copyright
Copyright © Entomological Society of Canada 1962

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References

Steinweden, J. B. 1929. Bases for the generic classification of the Coccoid family Coccidae. Ann. Ent. Soc. Amer. 22: 197–245.CrossRefGoogle Scholar
Steinweden, J. B. 1946. The identity of certain common American species of Pulvinaria (Homoptera: Coccoidae: Coccidae) Microentomology 11: 2–28.Google Scholar