Where do bark beetles typically form their galleries?

Bark beetles typically form their galleries in the cambium layer of trees. This layer is located just beneath the bark and is crucial for the transport of nutrients and water within the tree. When bark beetles infest a tree, they bore into this layer to create their tunnels or galleries, which is where they feed and lay their eggs. The cambium layer is essential for the tree’s health and growth, so when it is damaged by beetle activity, it can severely impact the tree's overall vitality, leading to further decline or death.

Understanding the location of these galleries helps in recognizing the signs of infestation and the subsequent impact on tree health, guiding appropriate management practices for affected areas.