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SEASONAL ACTIVITY OF THE NATIVE ELM BARK BEETLE, HYLURGOPINUS RUFIPES, IN CENTRAL ONTARIO (COLEOPTERA: SCOLYTIDAE)

Published online by Cambridge University Press:  31 May 2012

L. M. Gardiner
L. M. Gardiner
Affiliation:
Great Lakes Forest Research Centre, Canadian Forestry Service Sault Ste. Marie, Ontario P6A 5M7
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Abstract

Daily trapping of native elm bark beetles, Hylurgopinus rufipes (Eichh.), in central Ontario showed that the population is divided into fairly discrete overwintering adult and larval groups. Group proportions depend on the stage of development of the local beetle infestation and disease infection. Both beetles and disease are spread by mass movement of beetles, in late summer and fall, in search of living elm trees in which to feed and overwinter.

Résumé

Le piégeage quotidien du scolyte de l’orme Hylurgopinus rufipes (Eichh.), dans l’Ontario central a montré que la population de cet insecte se divise en groupes assez discrets d’adultes et de larves pour passer l’hiver. Les proportions des groupes sont fonction du stade de développement de l’infestation locale par le scolyte et d’infection de la maladie. Tant le scolyte et la maladie se disséminent par la migration massive de la population d’insectes, à la fin de l’été et à l’automne, à la recherche d’ormes vivants pour se nourrir et passer l’hiver.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 4 , April 1981 , pp. 341 - 348
Copyright
Copyright © Entomological Society of Canada 1981

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References

Finnegan, R. J. 1957. Elm bark beetles in southwestern Ontario. Can. Ent. 89(6): 275–280.CrossRefGoogle Scholar
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Gardiner, L. M. and Roden, D. B.. 1977. Rearing the North American native elm bark beetle. Dep. Environ., Can. For. Serv., Ottawa, Ont. Bi-mon. Res. Notes 33(5): 33–34.Google Scholar
Gardiner, L. M. and Webb, D. P.. 1980. Tests of chlorpyrifos for control of the North American elm bark beetle (Hylurgopinus rufipes Eichh.). Dep. Environ., Can. For. Serv., Sault Ste. Marie, Ont. Report O-X-311. 21 pp.Google Scholar