description Western Pine Beetle Overview
The western pine beetle (Dendroctonus brevicomis) is a bark beetle native to western North America. It primarily attacks ponderosa pine, especially large or stressed trees, and breeds beneath the bark. Populations can increase during drought and other periods of tree stress, allowing infestations to kill mature pines and alter conifer forests.
help Western Pine Beetle FAQ
What is the scientific name of the western pine beetle?
The western pine beetle is Dendroctonus brevicomis. It is a bark beetle native to western North America.
Which trees does the western pine beetle mainly attack?
It primarily attacks ponderosa pine, especially large or stressed trees. The beetles breed beneath the bark rather than in exposed dead wood.
Why can western pine beetle populations increase during drought?
Drought can weaken pine trees and reduce their ability to defend themselves with resin. That stress can allow beetle populations to grow and attack more trees.
Where does the western pine beetle live in a pine tree?
It breeds beneath the bark, where adults and larvae use the tree's inner bark tissues. This feeding can disrupt the tree's transport systems and contribute to tree death.
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