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INFLUENCE OF SNOW COVER ON THE OVERWINTERING OF THREE SPECIES OF GALL-FORMING DIPLOLEPIS (HYMENOPTERA: CYNIPIDAE)

Published online by Cambridge University Press:  31 May 2012

J. D. Shorthouse
Affiliation:
Department of Biology, Laurentian University, Sudbury, Ontario P3E 2C6
J. A. Zuchlinski
Affiliation:
Department of Biology, Laurentian University, Sudbury, Ontario P3E 2C6
G. M. Courtin
Affiliation:
Department of Biology, Laurentian University, Sudbury, Ontario P3E 2C6

Abstract

Prepupae of three species of Diplolepis (D. nebulosa (Bassett) a leaf-gall-former, an undescribed stem-gall-former, and D. radicum (Osten Sacken), a root-gall-former) were overwintered at various heights above the ground. Most prepupae of all three species buried beneath the snow survived the winter, while only stem-gall-formers survived at a height subject to fluctuating snow depths. All specimens of the three species that overwintered above the snow were killed.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1980

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