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SPECIES COMPOSITION OF PEA APHID (HOMOPTERA: APHIDIDAE) PRIMARY AND SECONDARY PARASITOIDS IN WISCONSIN

Published online by Cambridge University Press:  31 May 2012

R.L. Thiboldeaux ,
W.D. Hutchison  and
D.B. Hogg
R.L. Thiboldeaux
Affiliation:
Department of Entomology, University of Wisconsin, Madison, Wisconsin, USA53706
W.D. Hutchison
Affiliation:
Department of Entomology, University of Wisconsin, Madison, Wisconsin, USA53706
D.B. Hogg
Affiliation:
Department of Entomology, University of Wisconsin, Madison, Wisconsin, USA53706
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Extract

The pea aphid, Acyrthosiphon pisum (Harris), is an important pest of alfalfa, Medicago sativa L., in Wisconsin because of its characteristic potential for exponential population growth (Hutchison and Hogg 1984, 1985) and the subsequent damage in both hay quality and quantity inflicted by high populations (Cuperus et al. 1982). In Wisconsin, as in most alfalfa-producing states, there is a vast complex of natural enemies (Hutchison and Hogg 1985) that influence pea aphid population dynamics, including the hymenopteran primary parasitoids from the Aphidiidae. These primary species, however, are also attacked by several secondary parasitoids from the families Megaspilidae, Pteromalidae, and Alloxystidae.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 11 , November 1987 , pp. 1055 - 1057
Copyright
Copyright © Entomological Society of Canada 1987

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