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IDENTIFICATION OF COCOONS AND LAST-INSTAR LARVAL REMAINS OF SOME HYMENOPTEROUS PARASITOIDS OF THE ARMYWORM, PSEUDALETIA UNIPUNCTA, IN EASTERN ONTARIO

Published online by Cambridge University Press:  31 May 2012

J. C. Guppy  and
C. D. F. Miller
J. C. Guppy
Affiliation:
Entomology Research Institute, Canada Department of Agriculture, Ottawa, Ontario
C. D. F. Miller
Affiliation:
Research Station, Canada Department of Agriculture, Harrow, Ontario
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Abstract

A descriptive key based on phenotypic characteristics displayed by cocoons and/or pupae is offered as a tool for identification of primary parasitoids of the armyworm, Pseudaletia unipuncta (Haworth), in eastern Ontario. A second key based on structural differences of the last-instar larval mouthparts and tracheae is offered as a means to differentiate secondary parasitoids associated with the above-mentioned primary forms. Photographs of the cocoons, illustrations of the last-instar larval mouthparts and tracheae, and biological notes on pre-imago habits are included as supplemental criteria for species identification.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 10 , October 1970 , pp. 1320 - 1337
Copyright
Copyright © Entomological Society of Canada 1970

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