The emerald ash borer, ''Agrilus planipennis'', is a green beetle native to Asia.



In North America the borer is an invasive species, highly destructive to ash trees in its introduced range. The potential damage of this insect rivals that of Chestnut blight and Dutch Elm Disease. Since its accidental introduction into the United States and Canada in the 1990s, and its subsequent detection in 2002, it has spread to and adjacent parts of Canada. It has killed at least 50 to 100 million ash.. more