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Bumblebees From Northern Ellesmere Island, With Observations on Usurpation by Megabombus hyperboreus (Schönh.) (Hymenoptera: Apidae)1

Published online by Cambridge University Press:  31 May 2012

H. E. Milliron
Affiliation:
Entomology Research Institute, Research Branch, Canada Department of Agriculture, Ottawa, Canada
D. R. Oliver
Affiliation:
Entomology Research Institute, Research Branch, Canada Department of Agriculture, Ottawa, Canada

Abstract

Two species of Apidae occur on Ellesmere Island: Megabombus (Megabombus) polaris (Curtis) and M. (M.) hyperboreus (Schönherr). Some observations on their activity are presented. Three nests built on the surface of the ground are described. The colonies were of small size. Nest No. 1 contained only polaris; Nests Nos. 2 and 3 contained polaris workers and hyperboreus sexuals, as adults or brood. Usurpation is suggested to explain the workerless condition of hyperboreus in Nests Nos. 2 and 3.

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Type
Articles
Copyright
Copyright © Entomological Society of Canada 1966

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