How do flatheaded borers primarily feed?

Flatheaded borers are known for their unique feeding behavior, primarily targeting the woody tissues of plants. They typically tunnel into the trunks, branches, and roots of trees and shrubs, which allows them to feed on the plant’s vascular tissues. This internal feeding results in damage that can compromise the structure and overall health of the plant, sometimes leading to its decline or death.

This behavior is significant because it not only affects the plant's ability to transport water and nutrients but can also make the plant more susceptible to secondary infections or other pests. The larval stage of flatheaded borers creates galleries or tunnels as they feed, which is a characteristic sign of their presence and damage. Understanding this feeding habit is crucial for effective pest management and treatment strategies in ornamental and turf settings.

The other options reflect feeding habits of different types of pests or plant interactions that do not pertain to flatheaded borers. For instance, some pests may feed on leaves or stems, while others might target the surface of the soil or specific plant features like fruit and flowers. However, these behaviors do not apply to flatheaded borers.