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Title: Introduced Pine Sawfly
Author: Wilson, Louis F.;
Source: Forest Insect & Disease Leaflet 99. [Broomall, PA:] U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
Publication Series: Forest Insect and Disease Leaflet (FIDL)
Description: The introduced pine, sawfly (Diprion similis (Hartig)) in North America was first discovered in 1914 in a nursery in New Haven, Conn. This insect might have been introduced in the cocoon stage on nursery stock or packing material from Holland. Since its arrival, it has advanced steadily westward, reaching Pennsylvania before 1920 and Ontario by 1931. The present range in North America is along the Atlantic seaboard from Maine to Virginia, across the, Central and Lake States, through parts of southern Ontario and Quebec, and westward to Minnesota. In its homeland in the Eastern Hemisphere, this sawfly occurs throughout most of Eastern and Northern Europe and part of Russia.
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Wilson, Louis F. 1966. Introduced Pine Sawfly. Forest Insect & Disease Leaflet 99. [Broomall, PA:] U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
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