The Emerald Ash Borer, an invasive species of bark beetle that was discovered in Colorado in 2013 and has been expanding through the state, has the potential to damage the Colorado landscape. And ...

Don Wirth examines an ash tree on property near Tangent, Ore., pointing to telltale signs of ash bark beetle. With the arrival of emerald ash borer, Wirth worries that it could wipe out ash trees in ...

An emerald ash borer in the adult beetle stage emerges from the bark of an ash tree. Beetles lay their eggs under the bark, and the larvae cause damage to the tree and eventually kill it. S-shaped ...

The beetle kills trees by burrowing into their inner bark and cutting off the flow of water and nutrients. Adult beetles ...

An exotic beetle is chomping on trees in the Upstate, and the damage it is causing to the environment may be inevitable. The critter has even earned the title of being "one of the worst invasive pests ...

Arborist Greg Ranallo and one of the ash trees he has recently treated against the emerald ash borer in Shelburne on Friday, July 19. Ranallo favors treating the trees to curb the spread of the ...

An emerald ash borer larva chews through the cambium layer of an infested ash tree in Armstrong, located in Emmet County. A buildup of feeding tunnels cut off the vascular or “plumbing system" of a ...

There’s a tree killer on the loose in Oregon, and nobody knows how to stop it. An invasive green beetle called the emerald ash borer arrived in the Midwest from Asia, and it’s killed over 100 million ...

After 15 years of relentless work to combat the spread of the Emerald Ash Borer beetles, the cities of Minneapolis and St. Paul have completed the removal of the last ash trees from public spaces, ...

If you're seeing lots of tiny holes on your tree's bark, you could be dealing with a major pest infestation. Find out which ...

New detections reveal the metallic-green beetle, about a half-inch long, has made its way into Marion, Yamhill and Clackamas counties — miles away from the previously known infestations in Washington ...