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The Frass of Certain Defoliators of Forest Trees in the North Central United States and Canada1

Published online by Cambridge University Press:  31 May 2012

Alexander C. Hodson  and
Marion A. Brooks
Alexander C. Hodson
Affiliation:
Department of Entomology and Economic Zoology, University of Minnesota
Marion A. Brooks
Affiliation:
Department of Entomology and Economic Zoology, University of Minnesota
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Extract

As mentioned by Morris (1942), the forest entomologist is frequently faced with the practical problem of ascertaining the identity of certain insects which have defoliated the trees and disappeared before his arrival. Cast skins and head capsules provide a difficult and uncertain means of identification; and the kinds of damage done by the insects often are alike to such an extent that they are non-specific. There remains the abundant fecal pellet deposit, commonly called frass, which, if studied carefully, is a reliable means of identifying many species.

Type
Articles
Information
The Canadian Entomologist , Volume 88 , Issue 2 , February 1956 , pp. 62 - 68
Copyright
Copyright © Entomological Society of Canada 1956

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