Forestry & Range

Bark Beetle Information
Recent fires, storms and drought conditions have contributed to tree stress in the Columbia River Gorge. A newly documented bark beetle, the California fivespined Ips (Ips paraconfusus) has impacted ponderosa pine tree health in a few areas of the gorge.

Tree health

The California fivespined Ips (Ips paraconfusus)

Arizona Cooperative Extension: Managing Slash to Minimize Colonization of Residual Trees by Ips and Other Bark Beetle Species Following Thinning in Southwestern Ponderosa Pine (external pdf-note insecticide recommendations do not apply in Washington State, contact your local extension office for more information)