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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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Graham, S. A. 1935. The spruce budworm on Michigan pine. Bull. Sch. For. Mich. No. 6, pp. 56.Google Scholar
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