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A TECHNIQUE FOR AGEING COCOONS OF THE SAWFLY NEODIPRION SERTIFER (HYMENOPTERA: DIPRIONIDAE)

Published online by Cambridge University Press:  31 May 2012

Fong-Ching Chai
Affiliation:
Department of Zoology, University of Guelph, Guelph, Ontario
S. E. Dixon
Affiliation:
Department of Zoology, University of Guelph, Guelph, Ontario

Abstract

A technique for ageing cocoons of Neodiprion sertifer (Geoff.) is outlined using the redox dye 2,6-dichloroindophenol. New cocoons reduce 1 ml of a 0.001% solution in 85% ethanol from blue to colorless in 15 minutes. This reducing power diminishes with age.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1971

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References

Chai, Fong-Ching. 1968. Studies on the darkening process of cocoons of the sawfly Neodiprion sertifer (Geoff.). M.Sc. Thesis, Department of Zoology, University of Guelph.Google Scholar