Bark beetles moving between trees routinely carry two fungi that are responsible for the Dutch elm tree disease outbreak.

On the northwest corner of Manito Park, dozens of ponderosa pines appear to stand strong. Joggers and dog walkers weave ...

After the city removed nearly 200 pine trees from public parks and golf courses due to bark beetle infestations, Spokane ...

Spruce bark beetles don’t just tolerate their host tree’s chemical defenses—they actively reshape them into stronger ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

Bark beetle damage has more than doubled for two consecutive years as warmer winters extend the insects' active season across ...

Adult spruce bark beetles in their galleries in the bark of a Norway spruce tree. The beetle in the middle is infected with the fungus Beauveria bassiana. Spruce bark is rich in phenolic compounds ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study from the University of Eastern Finland shows. Led by Dr Samuli Junttila, ...

Louisiana House lawmakers are convening an emergency panel to deal with an infestation of beetles attacking pine trees across the state and posing a public safety concern. Above, piñon ips bark ...

Bark beetles have hard, smooth, stout bodies and range from 1.3 to 2.9 mm in length, depending on gender and species. The majority of bark beetles are female; males are smaller and flightless. Adult ...

San Juan National Forest (SJNF) staff mislead the public on native bark beetle outbreaks in our forests, often wanting to just cut more trees to stop natural disturbances, but why, to save these trees ...

In 1997, a massive pine beetle infestation devastated the Black Hills, destroying pines across the region. Nearly three ...