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STATUS OF THE PARASITE AGRYPON FLAVEOLATUM (GRAVENHORST) (HYMENOPTERA, ICHNEUMONIDAE), INTRODUCED TO CONTROL THE WINTER MOTH IN NOVA SCOTIA AND BRITISH COLUMBIA

Published online by Cambridge University Press:  31 May 2012

John R. Barron
John R. Barron
Affiliation:
Biosystematics Research Centre, Ottawa, Ontario, Canada K1A 0C6
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Abstract

Agrypon flaveolatum (Gravenhorst), introduced from Europe to control the winter moth, Operophtera brumata (L.), on apple and oak in Nova Scotia and British Columbia, was distinguished from the closely related native species, A. provancheri (Dalla Torre) and A. alaskensis (Ashmead). A detailed study of the three species revealed that they could be distinguished by specific morphological characters and by results of morphometric analyses of intra- and inter-specific variation of number of annuli of the antennal flagellum. The history of introductions of both the host and parasite is reviewed, including an account of host–parasite interactions. All of the characters defining species entities were found to be correlated with differences in host insect, host plant, and distribution.

Résumé

Agrypon flaveolatum (Gravenhorst), introduite d’Europe pour lutter contre l’arpenteuse tardive, Operophtera brumata (L.), sur les pommiers et les chênes de la Nouvelle-Écosse et de la Colombie-Britannique, a été différenciée de l’espèce indigène étroitement apparentée A. provancheri (Dalla Torre) et A. alaskensis (Ashmead). Une étude détaillée des trois espèces révèle qu’on pouvait les différencier par des caractères morphologiques spécifiques et par les résultats d’analyses morphométriques de la variation intra- et interspécifique d’un certain nombre d’anneaux du flagellum des antennes. L’auteur passe en revue l’histoire des introductions de l’hôte et du parasite, et donne un compte rendu de leurs interactions. Tous les caractères propres à une espèce s’avèrent corrélés à des différences dans l’insecte hôte, la plante hôte et la distribution.

Type
Articles
Information
The Canadian Entomologist , Volume 121 , Issue 1 , January 1989 , pp. 11 - 26
Copyright
Copyright © Entomological Society of Canada 1989

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