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Observations on the Spread of Cyzenis albicans (Fall.) (Tachinidae: Diptera), an Introduced Parasite of the Winter Moth, Operophtera brumata (L.), (Geometridae: Lepidoptera), in Nova Scotia1

Published online by Cambridge University Press:  31 May 2012

D. G. Embree
D. G. Embree
Affiliation:
Debert Forest Biology Sublaboratory, Truro, N.S.
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Extract

Cyzenis albicans (Fall.) has been introduced into Nova Scotia as a control measure against the winter moth, Operophtera brumata (L.). The parasite attacks the late larval stages of the winter moth, pupates within the host in the ground, and emerges in the spring. The first liberations were made at Oak Hill near Bridgewater and the dates of releases as well as the numbers released were reported by Graham (1958) as follows: 1954, 31; 1955, 1008; 1956, 1005; 1957, 250. Graham made recoveries of C. albicans from rearings of larvae collected at Oak Hill in 1956 and 1957 and found that parasitism was less than two per cent both years. While liberations have been made at other locations in the Province since 1957, no further releases have been made at or near Oak Hill.

Type
Articles
Information
The Canadian Entomologist , Volume 92 , Issue 11 , November 1960 , pp. 862 - 864
Copyright
Copyright © Entomological Society of Canada 1960

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References

Graham, A. R. 1958. Recoveries of introduced species of parasites of the winter moth, Operophtera brumata (L.) (Lepidoptera: Geometridae), in Nova Scotia. Can. Entomol. 90: 595–596.CrossRefGoogle Scholar
Morris, R. F., and Reeks, W. A.. 1954. A larval population technique for the winter moth (Operophtera brumata (Linn.) (Lepidoptera: Geometridae). Can. Entomol. 86: 433–438.CrossRefGoogle Scholar
Varley, G. C., and Gradwell, G. R.. 1958. Oak defoliators in England. Proc. Xth Internat. Congr. Entomol., Montreal, (1956) 4: 133–136.Google Scholar