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Adult emerald ash borers measure about half an inch long and sport a shiny green exoskeleton. Originally from Asia and first identified in the U.S. in Michigan in 2002, the invasive pest has decimated ash trees in North America, according to the U.S. Department of Agriculture.

opb.org‘It’s only a matter of time’: A beetle that decimates ash trees has arrived in southeast WashingtonTens of millions of ash trees in the U.S. have died in this way, according to the USDA.

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