They inhabit white, Lutz and Sitka spruce but only occasionally the black spruce. The beetles, just a quarter-inch long, can each lay up to 150 eggs in the phloem layer beneath a tree's bark on ...

A large outbreak of the eastern spruce budworm is defoliating trees and stressing or killing them, which can then help fuel ...

When metabolizing spruce bark, the insect's fungal partners release volatile compounds that bark beetles recognize through specialized olfactory sensory neurons Date: February 21, 2023 ...

Bark beetles may use receptors in their antennae to detect and feast on fungus-infected trees. The Eurasian spruce bark beetle (Ips typographus) – found in Europe, Asia and some parts of Africa ...

In a new study, an international research team led by the researchers from the Max Planck Institute for Chemical Ecology demonstrates that the European spruce bark beetle Ips typographus uses volatile ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study shows. Bark beetle-infested spruce trees begin to dry out already ...