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NOTE ON OVERWINTERING OF POLYNEMA PRATENSIPHAGUM (WALLEY) (HYMENOPTERA: MYMARIDAE) IN SOUTHWESTERN QUEBEC

Published online by Cambridge University Press:  31 May 2012

K.M. Al-Ghamdi ,
R.K. Stewart  and
G. Boivin
K.M. Al-Ghamdi
Affiliation:
Department of Entomology, Macdonald Campus of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 3V9
R.K. Stewart
Affiliation:
Department of Entomology, Macdonald Campus of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 3V9
G. Boivin
Affiliation:
Research Station, Research Branch, Agriculture Canada, St-Jean-sur-Richelieu, Quebec, Canada J3B 3E6
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Extract

Polynema pratensiphagum (Walley) is an endoparasitoid of mind eggs (CIBC 1979). Walley (1929) found this species fully developed within the eggs of Lygus pratensis L. deposited in common mullein, Verbascum thapsus L., in Ontario. It has been reported from southwestern Quebec as one of the main egg parasitoids of Lygus lineolaris (Palisot de Beauvois) (Sohati et al. 1989). Andrew et al. (1992) have used another mymarid, Anaphes iole Girault, as a biological control agent against Lygus eggs in California strawberry. Little is known of the overwintering behaviour of mymarids because they are very small and difficult to find. No evidence exists in the literature of mymarids overwintering as adults, and we assume that mymarids overwinter as the last larval instar, or prepupa, in host eggs.

Type
Articles
Information
The Canadian Entomologist , Volume 125 , Issue 2 , April 1993 , pp. 407 - 408
Copyright
Copyright © Entomological Society of Canada 1993

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References

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