Exotic Pest Reporting
USDA Forest Service - Region 2 - Rocky Mountain Region Archive, USDA Forest Service, Bugwood.org
Mountain pine beetle
Mountain pine beetle (Dendroctonus ponderosae) is an insect pest. It was first detected in Washington in 1955.
Mountain pine beetles inhabit pines, particularly the Ponderosa Pine, Lodgepole Pine, Whitebark Pine, Scots Pine and Limber Pine. The bristlecone pines and pinyon pines are less commonly attacked. During early stages of an outbreak, attacks are limited largely to trees under stress from injury, poor site conditions, fire damage, overcrowding, root disease or old age. As beetle populations increase, the beetles attack the largest trees in the outbreak area.
Summaries of State Plant Protection Laws and Regulations
04/03/2014 - Cut Down and Destroy Dead Pines
03/14/2014 - Cutting, chunking deadline draws near
02/27/2014 - Invasive Species Legislation Introduced
01/08/2014 - Study: Healthy trees cut in effort to fight beetle