Utah State University Extension
Emerald ash borer (Order: Coleoptera: Family Buprestidae) (EAB) is an exotic, invasive wood-boring insect that specializes on true ash species (Fraxinus spp.). EAB is native to parts of China, Korea, Japan, Taiwan, and small areas of Russia and Mongolia. EAB was first discovered in North America in June 2002 near Detroit, Michigan, and Windsor, Ontario, and is thought to have arrived to North America via infested wood packing material. Evidence suggests that EAB is generally established in an area for several years before it is detected.
Spears, Lori R.; Davis, Ryan S.; and Ramirez, Ricardo A., "Emerald Ash Borer" (2014). All Current Publications. Paper 897.