An insect known for turning entire mountainsides the color of rust could be making a resurgence in Colorado. The pest is none ...

It’s native to western pine forests, especially lodgepole and ponderosa ... live in the U.S. and Canada. Most bark beetles lay eggs under the bark of trees that are already dead or dying.

An insect called the western spruce budworm continues to be the most widespread forest pest in Colorado, but a bark beetle ...