Which of the following is NOT a type of tree insect pest with chewing mouth parts?

Leafhoppers are not classified as tree insect pests with chewing mouthparts. Instead, they possess piercing-sucking mouthparts that allow them to feed on the sap of plants and trees. This feeding method typically causes different types of damage compared to chewing insects, which physically consume plant material.

In contrast, caterpillars, webworms, and weevils are all examples of insects with chewing mouthparts. Caterpillars, the larval stage of moths and butterflies, primarily feed on leaves and can cause significant defoliation. Webworms, which are also caterpillars that create silk webs to protect themselves while feeding, similarly chew on foliage, leading to increased plant stress and damage. Weevils, a type of beetle, utilize their chewing mouthparts to bore into plant material, which can also result in significant harm to trees and shrubs.

Understanding these distinctions is important for effective pest management and ensuring appropriate treatments are applied based on the type of damage and feeding behavior exhibited by different insect species.