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OCCURRENCE OF DEATHWATCH CONE BEETLE, ERNOBIUS BICOLOR WHITE (COLEOPTERA: ANOBIIDAE), IN CONES OF BLACK SPRUCE, PICEA MARIANA (MILL.) B.S.P., IN NOVA SCOTIA

Published online by Cambridge University Press:  31 May 2012

J.D. Sweeney ,
G. Gesner  and
G. Smith
J.D. Sweeney
Affiliation:
Forestry Canada — Maritimes Region, PO Box 4000, Fredericton, New Brunswick, Canada E3B 5P7
G. Gesner
Affiliation:
Forestry Canada — Maritimes Region, PO Box 4000, Fredericton, New Brunswick, Canada E3B 5P7
G. Smith
Affiliation:
Forestry Canada — Maritimes Region, PO Box 4000, Fredericton, New Brunswick, Canada E3B 5P7
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Extract

An extensive survey of black spruce, Picea mariana (Mill.) B.S.P., in Newfoundland in 1978 disclosed that up to 50% of the old cones remaining on the trees were damaged by the deathwatch cone beetle, Ernobius bicolor White (Schooley 1983; White 1983). This beetle infests black spruce cones produced in the previous year's growing season and also damages cones in storage. Eggs are deposited between the scales and larvae feed within the cone and pupate in the fall or the following spring; their feeding can reduce extracted seed yields by one-half (Schooley 1983).

Information

Type
Articles
Information
The Canadian Entomologist , Volume 125 , Issue 2 , April 1993 , pp. 403 - 404
Copyright
Copyright © Entomological Society of Canada 1993

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References

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Schooley, H.O., Hall, J.P., and Burry, W.. 1979. Quantity of viable seed retained in old spruce cones. Environment Canada, Forestry Service Bi-monthly Research Notes 35: 32.Google Scholar
Snow, K. 1982. Regeneration Survey Report, 1977–1980. Nova Scotia Department of Lands and Forests, Truro, Nova Scotia.Google Scholar
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