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NOTES ON THE EFFECTS OF PHYSICAL FACTORS ON THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (CLEM.)

Published online by Cambridge University Press:  31 May 2012

W. G. Wellington  and
W. R. Henson
W. G. Wellington
Affiliation:
Forest Insects Laboratory, Sault Ste. Marie, Ontario
W. R. Henson
Affiliation:
Forest Insects Laboratory, Sault Ste. Marie, Ontario
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Concerning the light reactions of the adults, it may be noted that males are photopositive when in a dark-adapted state, but they rapidly become adapted to any light intensity and become extremely sluggish. Females in the dark-adapted state exbihit either photonegative behaviour or compassing behaviour, with no evidence that there is any orderly transition from one type of behaviour to the other. Light-compass orientation of flying females makes it possible to collect some at light traps, despite their normally negative response.

Type
Articles
Information
The Canadian Entomologist , Volume 79 , Issue 11-12 , December 1947 , pp. 195
Copyright
Copyright © Entomological Society of Canada 1947

References

REFERENCES

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Swaine, J. M., Craighead, F. C. and Bailey, I. W., 1924. Studies on the spruce budworm Cacoecia fumiferana Clem. Canada Dept. Agric. Tech. Bull. No. 37 (N. S.), pp. 91.Google Scholar