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Some Notes on the Dipterous Enemies of Aphids Harmful for Apple Growing in Nova Scotia

Published online by Cambridge University Press:  31 May 2012

H. H. Evenhuis
H. H. Evenhuis
Affiliation:
Research Station, Canada Department of Agriculture, Kentville, Nova Scotia and Institute of Phytopathological Research, Wageningen, Netherlands
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Extract

During a stay at the Research Station, Canada Department of Agriculture at Kentville, Nova Scotia, from July 3 to October 16, 1959, I had the opportunity to make some observations on the natural enemies of the woolly apple aphid, Eriosoma lanigerum (Hausm.), the rosy apple aphid, Dysaphis plantaginea (Pass.), and the green apple aplud, Aphis pomi Deg. An inventory of these enemies was made in the Annapolis Valley in apple orchards. sprayed according to the principles of the spray schedule of Dr. A. D. Pickett. This schedule avoids spraying with fungicides and insecticides such as sulphur and phosphorus compounds, which are very harmful to the enemies of a number of pests, studied by Dr. Picktett and his staff (cf. Pickett 1959). The dipterous predators and their enemies are dealt with in this paper.

Type
Articles
Information
The Canadian Entomologist , Volume 93 , Issue 11 , November 1961 , pp. 1020 - 1021
Copyright
Copyright © Entomological Society of Canada 1961

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References

Evenhuis, H. H. 1959. Cnemodon vitripennis (Meig.) as a predator of the woolly apple aphid. Ent. Ber. 19: 238–240. [Dutch, with English summary].Google Scholar
Pickett, A. D. 1959. Utilization of native parasites and predators. J. Econ. Ent. 52: 1103–1105.CrossRefGoogle Scholar