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Title: Mountain Pine Beetle
Author: Amman, Gene D.; McGregor, Mark D.; Dolph, Robert E. Jr.
Source: Forest Insect & Disease Leaflet 2. [Portland, OR:] U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region State & Private Forestry
Description: The mountain pine beetle, Dendroctonus ponderosae Hopkins, is a member of a group of beetles known as bark beetles: Except when adults emerge and attack new trees, the mountain pine beetle completes its life cycle under the bark. The beetle attacks and kills lodgepole, ponderosa, sugar, and western white pines. Outbreaks frequently develop in lodgepole pine stands that contain well-distributed, large-diameter trees or in dense stands of pole-sized ponderosa pine. When out-breaks are extensive, millions of trees may be killed each year. Periodic losses of high-value, mature sugar and western white pines are less wide-spread but also serious.
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Amman, Gene D.; McGregor, Mark D.; Dolph, Robert E. Jr. 1989. Mountain Pine Beetle. Forest Insect & Disease Leaflet 2. [Portland, OR:] U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region State & Private Forestry
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