Which pest is NOT classified as having piercing/sucking mouth parts?

Webworms are not classified as having piercing/sucking mouthparts because they possess chewing mouthparts. They primarily feed on foliage by chewing through the leaf tissue. This feeding method allows them to cause significant damage to plants as they consume large portions of the leaves.

In contrast, mealybugs, aphids, and scales all have piercing/sucking mouthparts, which they use to extract sap from plants. This feeding behavior can weaken plants and make them more susceptible to diseases, as well as lead to a variety of other issues such as sooty mold and leaf drop. Understanding the differing mouthpart structures and feeding behaviors of these pests is essential for effective pest management and control strategies.