Oregon officials are warning about the spread of an invasive insect spreading across the Willamette Valley.

The emerald ash borer (EAB) is a deceptively beautiful insect. As the first part of the name implies, the one-centimeter long beetles are an iridescent, metallic green. They have large, dark eyes and ...

The emerald ash borer could impact more than one million ash trees, as experts urge residents to watch for signs.

There's another flying insect to watch out for.

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many ash trees that cool residential neighborhoods on hot summer days. On Wednesday, Oregon forestry officials ...

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 ...

The emerald ash borer, a tiny beetle responsible for killing ash trees across North America, was spotted in three new ...

A new study from the University of Minnesota found that several species of parasitic fungi were effective at killing emerald ash borer beetles, one of the most devastating forest pests to ever hit ...

DENVER (KDVR) — Emerald ash borer — it’s a name that has begun to pop up all over Colorado. A recent study by Colorado State University, Fort Collins, indicates why the name has spread and also ...

The invasive emerald ash borer beetle has been confirmed in the Dallas city limits, city officials say, including the Great Trinity Forest. The non-native small green beetle is devastating to ash tree ...

Getting your Trinity Audio player ready... CARBONDALE — Carl Meinecke sidles up to an ash tree and wraps a tape measure around the trunk, gathering both circumference and diameter in one move.