Whitney Cranshaw, Colorado State University, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org

William M. Ciesla, Forest Health Management International, Bugwood.org

William M. Ciesla, Forest Health Management International, Bugwood.org

William M. Ciesla, Forest Health Management International, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org

Whitney Cranshaw, Colorado State University, Bugwood.org