Recoveries of Introduced Species of Parasites of the Winter Moth, Operophtera brumata (L.) (Lepidoptera: Geometridae), in Nova Scotia

Abstract

Five species of parasites reared from European material were released at Oak Hill, near Bridgewater, Nova Scotia from 1954 to 1956 as biotic agents against the winter moth, Operophtera brumata (L.) which had been established in Nova Scotia since before 1950. Recovery collections were made annually from 1955 to 1957. This work is still in progress, and in 1957 releases were made in four additional localities. Results of establishment of parasites from releases from 1954 to 1956 are reported below.