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THE INHABITANTS (HYMENOPTERA: CYNIPIDAE, CHALCIDOIDEA) OF THE CYNIPIDOUS GALLS OF QUERCUS BOREALIS IN NOVA SCOTIA

Published online by Cambridge University Press:  31 May 2012

J. F. Brookfield
J. F. Brookfield
Affiliation:
Department of Biology, Dalhousie University, Halifax, Nova Scotia
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Abstract

Although heterogony has yet to be proved for the oak gall producing species of Cynipidae, Plagiotrochus tumificus O.S. and P. scitula Bass., the laboratory rearing of the male and female individuals from the vernal galls of these two species indicates that the mother insects in the former species are mostly amphitokous, while those in P. scitula are arrhenotokous and thelytokous. Amphitoky is shown for Callirliytis operator O.S. which is known to be heterogenous.Cynipid inquilines and chalcid parasites were reared from several cynipidous oak galls in the area. The inquiline and parasite fauna of any particular gall depend on the form of the gall and not on the species of the gall producing cynipid. None of the inquilines and parasites reared in this study is identical with known palearctic species. Most individual inquilines and parasites emerging from the vernal galls emerge in the summer, but a few overwinter in these galls and do not emerge until the following spring.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 7 , July 1972 , pp. 1123 - 1133
Copyright
Copyright © Entomological Society of Canada 1972

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