EmeraldAshBorerMontage

Counterclockwise from top are ash tree, ash leaves, emerald ash borer

The emerald ash borer has been spread from site to site by the transportation of firewood.
Tree and leaf photos by Paul Wray, Iowa State University, Bugwood.org. Emerald ash borer photo by David Cappaert, Michigan State University, Bugwood.org | Forestryimages.org