Emerald ash borer. Photo credit: Taylor Scarr, Ontario Ministry of Natural Resources, Bugwood.com

Phytophthora root rot Douglas fir. Photo credit: T. Olson, PA Dept of Ag

EAB damage. Photo credit: Eric Day, VA Tech, Bugwood.com

Lilac ash borer. Photo credit: Whitney Cranshaw, Colorado State University, Bugwood.com

Pupae and emergence holes. Photo credit: Whitney Cranshaw, Colorado State University, Bugwood.com