Thomas E. Hinds, USDA Forest Service, Bugwood.org

Thomas E. Hinds, USDA Forest Service, Bugwood.org

USDA Forest Service - Northern and Intermountain Region , USDA Forest Service, Bugwood.org

William Jacobi, Colorado State University, Bugwood.org

Mike Schomaker, Colorado State Forest Service, Bugwood.org

William Jacobi, Colorado State University, Bugwood.org

William Jacobi, Colorado State University, Bugwood.org

William Jacobi, Colorado State University, Bugwood.org