Which insect pests specifically attack trunks, stems, or branches?

The insect pests that specifically attack trunks, stems, or branches are primarily grubs and borers. These pests have life cycles and feeding habits that target the woody parts of plants, causing significant damage.

Borers, for example, are known for drilling into the plant tissue, which can weaken the structure of the plant and create entry points for pathogens. They often lay eggs on the bark or in the crevices of the trunk, and once the larvae hatch, they tunnel under the bark or into the wood, disrupting the sap flow and potentially leading to the death of the plant.

Although scale insects and mealybugs can also cause damage to plants, they primarily feed on the foliage and may attach to the bark and stems. However, they do not typically infest or damage the inner structures to the extent that borers do, making them less relevant to this particular question focused on trunk, stem, or branch attacks.

Understanding the specific feeding behaviors of these pests helps in implementing appropriate pest management strategies to protect the health of trees and shrubs.