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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

  • J. H. H. Phillips

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.

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Steinweden, J. B. 1929. Bases for the generic classification of the Coccoid family Coccidae. Ann. Ent. Soc. Amer. 22: 197245.
Steinweden, J. B. 1946. The identity of certain common American species of Pulvinaria (Homoptera: Coccoidae: Coccidae) Microentomology 11: 228.
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The Canadian Entomologist
  • ISSN: 0008-347X
  • EISSN: 1918-3240
  • URL: /core/journals/canadian-entomologist
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