Hedlin, A.F.
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Douglas-fir cone moth and cone gall midge: relation to damage and prolonged diapause to seed cone abundance in British Columbia
Year: 1984
Catalog ID: 2277
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Chemical lure for male Douglas-fir cone moth, Barbara colfaxiana (Lepidoptera: Olethreutidae)
Hedlin, A.F.; Weatherston, J.; Ruth, D.S.; Miller, G.E.
Year: 1983
Catalog ID: 2269
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Induction of prolonged diapause in Barbara colfaxiana (Lepidoptera: Olethreutidae): correlations with cone crops and weather
Hedlin, A.F.; Miller, G.E.; Ruth, D.S.
Year: 1982
Catalog ID: 2178
Issued by: Pacific Forestry Centre
Availability: PDF (request by e-mail)
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Cone and seed insects of North American conifers
Hedlin, A.F.; Yates, H.O., III; Tovar, D.C.; Ebel, B.H.; Koerber, T.W.; Merkel, E.P.
Year: 1980
Catalog ID: 2026
Issued by: Pacific Forestry Centre
Availability: PDF (download)
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Observations on a twigminer, Argyresthia pseudotsuga Freeman (Lepidoptera: Yponomeutidae) in Douglas-fir seed orchards
Year: 1979
Catalog ID: 1818
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Examination of Douglas-fir clones for differences in susceptibility to damage by cone and seed insects
Year: 1978
Catalog ID: 1802
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Chemical and field studies on the sex pheromones of the cone and seed moths Barbara colfaxiana and Laspeyresia youngana
Weatherston, J.; Hedlin, A.F.; Ruth, D.S.; MacDonald, L.M.; Leznoff, C.C.; Fyles, T.M.
Year: 1977
Catalog ID: 1629
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Comparison of germinability of seed from insect-infested and uninfested cones
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Spruce cone insects in British Columbia
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Temperature treatment of Douglas-fir seeds to control the seed chalcid Megastigmus spermotrophus Wachtl
Year: 1974
Catalog ID: 29110
Issued by: Pacific Forestry Centre
Availability: PDF (request by e-mail)
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Barbara colfaxianna siskivouana (Kft.), a pest in cones of Abies grandis
Year: 1974
Catalog ID: 29100
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Cone and seed insects of British Columbia
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Spruce cone insects in British Columbia and their control
Year: 1973
Catalog ID: 28664
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Experiments in preventive treatment of Douglas-fir against attack by the ambrosia beetle (Trypodendron lineatum) (Oliv.) using benzene hexachloride methyl trithion and other insecticides
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A Douglas-fir twig mining beetle, Pityophthorus orarius (Coleoptera: Scolytidae)
Year: 1970
Catalog ID: 28210
Issued by: Pacific Forestry Centre
Availability: PDF (request by e-mail)
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Rearing the Douglas-fir cone moth, Barbara colfaxiana (Kearfott), on an artificial diet in the laboratory
Year: 1969
Catalog ID: 28015
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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A new species of Camptomyia (Diptera: Cecidomyiidae) from Douglas-fir cones
Year: 1968
Catalog ID: 27866
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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The pine seedworm, Laspeyresia piperana (Lepidoptera: Olethreutidae), in cones of Ponderosa pine
Year: 1967
Catalog ID: 27795
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Cone insects of grand fir, Abies gradis (Douglas) Lindley, in British Columbia
Year: 1967
Catalog ID: 27794
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Douglas-fir cone insects and their control
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Prevention of insect-caused seed loss in Douglas-fir with systemic insecticides
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Laspeyresia piperana (Kft.) in cones of Ponderosa pine, Pinus ponderosa Laws
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Cone and seed insects of grand fir, Abies grandis (Dougl.) Lindl
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Rearing cone insects in the laboratory on an artificial diet
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Results of a six-year plot study on Douglas-fir cone insect population fluctuations
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Life history and habits of a midge, Phytophaga thujae Hedlin (Diptera: Cecidomyiidae) in western red cedar cones
Year: 1964
Catalog ID: 23994
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Five systemic insecticides used against Douglas-fir cone insects
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Life history and habits of a midge, Contarinia washingtonensis Johnson (Diptera: Cecidomyiidae), in Douglas-fir cones
Year: 1963
Catalog ID: 23911
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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Two systematic insecticides phosphamidon and systox used against the Douglas-fir cone midge, Contarinia oregonensis Foote
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Attraction of Douglas-fir flowers to cone insects
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Some aspects of the cone and seed insect problem in the Pacific Northwest
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The life history and habits of a midge, Contarinia oregonensis Foote (Diptera: Cecidomyiidae) in Douglas-fir cones
Year: 1961
Catalog ID: 20881
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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An ecological study and damage appraisal of white spruce cone insects
Year: 1956
Catalog ID: 16133
Issued by: Laurentian Forestry Centre
Availability: PDF (request by e-mail)
