![](https://csfs.colostate.edu/wp-content/uploads/2017/01/AerialSurveybarkbeetlekill2014.jpg)
Spruce Beetle Epidemic Continues to Expand, Kill Trees in Colorado
FORT COLLINS, Colo. – Spruce beetle was the most damaging forest insect pest in Colorado for the fifth consecutive year, based on a 2016 forest health aerial survey conducted by the Colorado State Forest Service (CSFS) and U.S. Forest Service (USFS), Rocky Mountain Region.