Traits: Pear-shaped insect with winged and wingless forms in the same species; most have two tubes (called cornicles) on the top of their abdomens.

Habitat: Leaves and stems of plants

Foods: Sap of plants; they cause plant leaves to wilt, curl, and turn yellow

Eaten by: Ants, wasps, ladybugs, warblers, chickadees, kinglets, wrens, sparrows

Do You Know? Aphids produce a secretion, called honeydew. To obtain this honeydew, certain ants protect and tend aphids.