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Choristoneura freemani Razowski, 2008, western spruce budworm; Choristoneura fumiferana (Clemens, 1865), eastern spruce budworm; Choristoneura griseicoma (Meyrick, 1924) Choristoneura hebenstreitella (Muller, 1764), mountain-ash tortricid; Choristoneura heliaspis (Meyrick, 1909) Choristoneura improvisana (Kuznetsov, 1973)
The range of the eastern spruce budworm is the largest of all budworms and coincides with the range of its hosts: fir and spruce trees in eastern North America, primarily in Canada. [ 8 ] [ 9 ] It includes the Boreal Forest as well as the Great Lakes-St. Lawrence , Northern, and Acadian forest regions. [ 10 ]
The eastern spruce budworm is an example of a destructive insect in fir and spruce forests. Birds are a natural form of biological control, but the Trichogramma minutum, a species of parasitic wasp, has been investigated as an alternative to more controversial chemical controls. [64]
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First occurrence around Medford, Massachusetts (1888) Progressive spread of the gypsy moth (L. dispar) across north east US from 1900 to 2007; compiled from county data by US Forest Service The spongy moth ( Lymantria dispar ), formerly known as the gypsy moth, was introduced in 1868 into the United States by Étienne Léopold Trouvelot , a ...
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The property costs incurred by the flooding were estimated at $1,000,000, while the damage inflicted on crops and farms caused an economic loss of about $500,000. [19] View of Morehead State University. In the early 1960s, efforts were underway to establish a local hospital.