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DISTINGUISHING LARVAE AND PUPAE OF THE WINTER MOTH, OPEROPHTERA BRUMATA, AND THE BRUCE SPANWORM, O. BRUCEATA (LEPIDOPTERA: GEOMETRIDAE)

Published online by Cambridge University Press:  31 May 2012

D. C. Eidt  and
D. G. Embree
D. C. Eidt
Affiliation:
Forest Research Laboratory, Department of Forestry and Rural Development, Fredericton, New Brunswick
D. G. Embree
Affiliation:
Forest Research Laboratory, Department of Forestry and Rural Development, Fredericton, New Brunswick
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Abstract

Larvae of the winter moth, Operophtera brumata (L.), and the Bruce spanworm, O. bruceata (Hulst), differ in the number of instars, in habits, and slightly in morphology. Populations may be distinguished readily by these criteria, but individual larvae sometimes give difficulty. The form of the pupal cremaster is distinctly different.

Type
Research Article
Information
The Canadian Entomologist , Volume 100 , Issue 5 , May 1968 , pp. 536 - 539
Copyright
Copyright © Entomological Society of Canada 1968

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