Abstract
The satin moth, Stilpnotia salicis (L.), has been a pest of shade trees in the Maritime Provinces for about 25 years. Surveys of its distribution were started by the Division of Plant Protection (9) immediately following the discovery of this introduced species in 1930 and later carried out annually by members of the Fredericton Laboratory and the sub-laboratories at Debert, N.S., and Corner Brook, Newfoundland. The surveys have been accompanied by periodic collections and rearings, but only the larger and more representative of these are discussed in the present paper.

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