NOTES ON THE BIOLOGY OF THE ENGELMANN SPRUCE WEEVIL, PISSODES ENGELMANNI (CURCULIONIDAE: COLEOPTERA) AND ITS PARASITES AND PREDATORS
- 31 January 1967
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 99 (2), 201-213
- https://doi.org/10.4039/ent99201-2
Abstract
The Engelmann spruce weevil, Pissodes engelmanni Hopkins, is an indigenous pest of spruce regeneration in western Canada and the adjacent United States. It is univoltine, overwintering as an adult in the duff beneath the host trees. Eggs are deposited in feeding punctures in the terminal leader. Larvae feed downward in the phloem causing two or more years loss of height growth. Deformities incurred by three or more consecutive years of weevil attacks produce a tree of no commercial value. The incidence of weevilling is most numerous in open grown, even-aged, young stands. Of 14 insect parasites and one predator, Dolichomitus terebrans nubilipennis (Viereck), Eurytoma pissodis Girault and Lonchaea corticis Taylor are considered principal natural control agents.Keywords
This publication has 4 references indexed in Scilit:
- Cytogenetic Pathways in Beetle SpeciationThe Canadian Entomologist, 1962
- Biology of the Mountain Pine Beetle, Dendroctonus monticolae Hopkins, in the East Kootenay Region of British Columbia II. Behaviour in the Host, Fecundity, and Internal Changes in the FemaleThe Canadian Entomologist, 1962
- The Arthropod Fauna of Coniferous Leaders Weeviled by Pissodes Strobi (Peck)Psyche: A Journal of Entomology, 1928
- Contributions to our knowledge of bees and ichneumon-flies, including the descriptions of twenty-one new genera and fifty-seven new species of ichneumon-fliesProceedings of the United States National Museum, 1912