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HOST ASSOCIATIONS IN SYMPATRIC POPULATIONS OF CHORISTONEURA OCCIDENTALIS FREEMAN AND C. RETINIANA (WALSINGHAM) (LEPIDOPTERA: TORTRICIDAE) IN SOUTH-CENTRAL OREGON AT HIGH POPULATION DENSITIES

Published online by Cambridge University Press:  31 May 2012

Willis C. Schaupp Jr.
Willis C. Schaupp Jr.
Affiliation:
Entomology Department, University of California, Berkeley, California, USA 94720
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Extract

Sympatric, synchronous populations of conifer-feeding Choristoneura (Lepidoptera: Tortricidae) occur in western North America (Powell 1980). Choristoneura occidentalis Freeman, the western spruce budworm, co-exists with C. retiniana, the Modoc budworm, in mixed stands of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, and true firs, Abies spp. Choristoneura occidentalis has brown larvae and a broad geographic distribution associated with one of its principle hosts, Douglas-fir (Stehr 1967). Larvae of C. retiniana are green and feed on true firs, particularly white fir, Abies concolor (Gord. & Glend.) Lindl. (Stehr 1967; Carolin et al. 1987).

Type
Articles
Information
The Canadian Entomologist , Volume 123 , Issue 3 , June 1991 , pp. 713 - 715
Copyright
Copyright © Entomological Society of Canada 1991

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References

Carolin, V.M., Powell, J.A., Daterman, G.E., and Stock, M.W.. 1987. Budworm taxonomy. pp. 18–24 in Western Spruce Budworm. USDA For. Serv. Tech. Bull. 1694. 198 pp.Google Scholar
Dolph, R.E. 1980. Budworm activity in Oregon and Washington 1947–1979. USDA For. Serv. Rep. R6-FIDM-033. 54 pp.Google Scholar
Liebhold, A.M. 1986. Larval coloration of hybrids between Choristoneura occidentalis and C. retiniana (Lepidoptera: Tortricidae). Can. Ent. 118: 857–860.CrossRefGoogle Scholar
Liebhold, A.M., Volney, W.J.A., and Waters, W.E.. 1984. Evaluation of cross-attraction between sympatric Choristoneura occidentalis and C. retiniana (Lepidoptera: Tortricidae) populations in south-central Oregon. Can. Ent. 116: 827–840.CrossRefGoogle Scholar
Powell, J.A. 1980. Nomenclature of nearctic conifer-feeding Choristoneura (Lepidoptera: Tortricidae): Historical review and present status. USDA For. Serv. Gen. Tech. Rep. PNW-100. 18 pp.Google Scholar
Schaupp, W.C. Jr, 1988. Parasitoids of western budworms, Choristoneura occidentalis and C. retiniana (Lepidoptera: Tortricidae). Ph.D. thesis, University of California, Berkeley, CA. 88 pp.Google Scholar
Stehr, G.W. 1967. On coniferophagous species of Choristoneura (Lepidoptera: Tortricidae) in North America. II. Geographic distribution in accordance with forest regions. Can. Ent. 99: 456–463.CrossRefGoogle Scholar
Volney, W.J.A., Liebhold, A.M., and Waters, W.E.. 1983. Effects of temperature, sex and genetic background on coloration of Choristoneura spp. (Lepidoptera: Tortricidae) populations in south-central Oregon. Can. Ent. 115: 1583–1596.CrossRefGoogle Scholar
Volney, W.J.A., Liebhold, A.M., and Waters, W.E.. 1984. Host associations, phenotypic variation and mating compatibility of Choristoneura occidentalis and C. retiniana (Lepidoptera: Tortricidae) populations in south-central Oregon. Can. Ent. 116: 813–826.CrossRefGoogle Scholar
Waters, W.E., and Volney, W.J.A.. 1985. Sampling and analysis of endemic western spruce budworm populations. pp. 124–131in Bevan, D., and Stoakley, J.T. (Eds.), Site Characteristics and Population Dynamics of Lepidopteran and Hymenopteran Forest Pests (Proc. IUFRO Conf., 1–7 Sept. 1980, Dornoch, Scotland). For. Comm. Res. Devel. Pap. 135. U.K.Google Scholar