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PARASITES OF THE YELLOWHEAD SPRUCE SAWFLY, PIKONEMA ALASKENSIS (HYMENOPTERA: TENTHREDINIDAE), IN MAINE AND NOVA SCOTIA1

Published online by Cambridge University Press:  31 May 2012

L. C. Thompson  and
H. M. Kulman
L. C. Thompson
Affiliation:
Department of Entomology, Fisheries, and Wildlife, University of Minnesota, St. Paul 55108
H. M. Kulman
Affiliation:
Department of Entomology, Fisheries, and Wildlife, University of Minnesota, St. Paul 55108
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Abstract

Thirteen species of parasites were reared from Pikonema alaskensis (Rohwer) larvae and cocoons collected in Maine and 12 species from larvae collected in Nova Scotia. Of the larval parasites, the most common species in Maine were the ichneumons Rhorus sp. 1 and Syndipnus rubiginosus Walley, and in Nova Scotia, the ichneumons Aderaeon bedardi (Provancher), Mesoleius sp., Rhorus sp. 2, and S. rubiginosus. Of the tachina flies, Palexorista bohemica (Mesnil) was more common in Maine, while it and Bessa harveyi (Townsend) were equally common in Nova Scotia. Only two cocoon parasites were reared in Maine, the ichneumon Endasys pubescens (Provancher) and the pteromalid Tritneptis diprionis Gahan. No egg parasites were reared. Parasitism totaled 12.3% in Maine larvae, 16.1% in Maine cocoons, and 46.7% in Nova Scotia larvae.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 1 , 01 January 1980 , pp. 25 - 29
Copyright
Copyright © Entomological Society of Canada 1980

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