Echo
Emerald ash borer spreads through Wisconsin, Ohio, Minnesota, Indiana, Illinois, Michigan, Ontario, Quebec
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By Nick Mordowanec
Dec. 13, 2009
LANSING, Mich. — Ever since the emerald ash borer swept through Michigan in the summer of 2002, the state has spent tens of millions of dollars to subdue it. But the exotic beetle thought to have come to the United States through airplane or ship cargo remains rampant. Adult beetles cause minimal damage by nibbling on foliage, but the larvae feed on the inner bark of trees, disrupting nutrient and water flow.