About the Beetles
The Emerald Ash
Borer is an exotic beetle that was discovered in southeastern Michigan
near Detroit in the summer of 2002. The adult beetles nibble on ash
foliage but cause little damage. The larvae (the immature stage) feed on
the inner bark of ash trees, disrupting the tree's ability to transport
water and nutrients, in turn, killing the tree. The Emerald Ash Borer
probably arrived in the United States on solid wood packing material
carried in cargo ships or airplanes originating in its native Asia.