Predator release program for balsam woolly aphid, <i>Adelges piceae</i> (Homoptera: Adelgidae), in British Columbia, 1960-1969

Authors

  • J. W. E. Harris Pacific Forest Research Centre Canadian Forestry Service Environment Canada Victoria, B.C.
  • A. F. Dawson Pacific Forest Research Centre Canadian Forestry Service Environment Canada Victoria, B.C.

Keywords:

balsam woolly aphid, <i>Adelges piceae</i>, Homoptera, Adelgidae, <i>Aphidoletes thompsoni</i>, <i>Laricobius erichsonii</i>, <i>Pullus impexus</i>, <i>Cremifania nigrocellulata</i>

Abstract

Predators of the balsam woolly aphid, <i>Adelges piceae</i> (Ratz.), an introduced pest of <i>Abies</i> spp., were imported and released into southwestern British Columbia from 1960 to 1969. <i>Laricobius erichsonii</i> Rosen. and <i>Pullus impexus</i> (Muls.) became established and were still found in 1978. <i>Aphidoletes thompsoni</i> Mohn and <i>Cremifania nigrocellulata</i> Cz. also became established, at least briefly. These and a complex of native predators reduced or eliminated some stem infestations but did not reduce aphid-caused forest.

References

Chapman, J.A. and J.M. Kinghorn. 1957. Window flight traps for insects. Can. Ent. 87:46-47.

Clark, R.C., D.O. Greenbank, D.G. Bryant, and J.W.E. Harris. 1971. Adelges piceae (Ratz.), balsam woolly aphid (Homoptera: Adelgidae). In Biological control programmes against insects and weeds in Canada 1959-1968. Commonwealth Institute of Biological Control, Trinidad, Techn. Comm. No. 4. pp. 113-127.

Franz, J.M. 1958. Studies on Laricobius erichsonii Rosen. (Coleoptera: Derodontidae) a predator on Chermesids. Entomophaga 3:109-196.

Harris, J.W.E. 1973. Tree and site characteristics relative to progressive balsam woolly aphid damage to Abies spp., British Columbia 1959-1970. Pacific Forest Research Centre, Victoria, Internal Rep. BC-46. 60 pp.

Harris, J.W.E., J.C.V. Holms, and A.F. Dawson. 1968. Balsam woolly aphid predator studies, British Columbia, 1959-1967. Forest Research Lab., Victoria, Inform. Rep. BC-X-23. 18 pp.

McGugan, B.M. and H.C. Coppel. 1962. Biological control of forest insects — 1910-1958. In A review of the biological control attempts against insects and weeds in Canada. Commonwealth Inst. of Biological Control, Trinidad, Techn. Comm. No. 2. pp. 35-216.

Mitchell, R.G. and K.H. Wright. 1967. Foreign predator introductions for control of the balsam woolly aphid in the Pacific Northwest. J. Econ. Ent. 60:140-147.

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Published

2019-09-06

Issue

Vol. 76 (1979): Journal of the Entomological Society of British Columbia

Section

Articles

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