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INJURY OF DOUGLAS-FIR TREES BY MATURATION FEEDING OF THE DOUGLAS-FIR HYLESINUS, PSEUDOHYLESINUS NEBULOSUS (COLEOPTERA: SCOLYTIDAE)1

Published online by Cambridge University Press:  31 May 2012

K. J. Stoszek
Affiliation:
Entomology Department, Oregon State University, Corvallis, Oregon
J. A. Rudinsky
Affiliation:
Entomology Department, Oregon State University, Corvallis, Oregon

Abstract

For maturation feeding, the teneral adults of Pseudohylesinus nebulosus (LeConte) infest healthy twigs of Douglas-fir trees, where they excavate short, irregular galleries in the wood. Mechanically damaged twigs and smaller branches then break off, or a canker-like structure, vulnerable to further breakage, develops at the place of feeding. Some silvicultural and forest entomological implications are mentioned.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1967

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References

Chamberlin, W. J. 1958. The Scolytoidea of the northwest. Oregon State University Press.Google Scholar
Walters, J, and McMullen, L. H.. 1956. Life history and habits of Pseudohylesinus nebulosus (LeConte) (Coleoptera:Scolytidae) in the interior of British Columbia. Can. Ent. 88: 197202.CrossRefGoogle Scholar