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Releases in North America and Reviews of Bionomics in Europe of Insect Predators of the Balsam Woolly Aphid, Adelges piceae (Ratz.) (Homoptera: Adelgidae)1

Published online by Cambridge University Press:  31 May 2012

B. C. Smith  and
H. C. Coppel
B. C. Smith
Affiliation:
Entomology Laboratory, Belleville, Ontario
H. C. Coppel
Affiliation:
Entomology Laboratory, Belleville, Ontario
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Extract

The balsam woolly aphid, Adelges piceae (Ratz.), causes serious damage to balsam fir, Abies balsamea (L.) Mill., in Eastern Canada. It was introduced from Europe before 1900 (Balch, 1952) and has also become established in the northeastern United States. In continental Europe A. piceae is common on Abies alba Mill. but is not so serious a pest as in Canada. It has an extensive complex of insect predators in both Canada (Balch, 1934) and Europe (Delucchi, 1954). Balch (1934, 1952) found those in Canada inadequate as control agents. Some of the predators of Pineus pini Koch and Pineus strobi (Htg.) studied by Wilson (1938) in England, and recommended for introduction to new areas, were imported to Canada and released against A. piceae. Predators were first introdnced from Ensland in 1933 and later from continental Europe beginning in 1951.

Type
Articles
Information
The Canadian Entomologist , Volume 89 , Issue 9 , September 1957 , pp. 410 - 420
Copyright
Copyright © Entomological Society of Canada 1957

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References

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