Catorhintha selector is a species of true bug in the family Coreidae, commonly known as leaf-footed bugs. The bug has a general brown to grayish appearance, with some having greenish tones. The body is elongated, and the thorax is flattened. Like most other Coreidae species, Catorhintha selector is a sapsucker, meaning it feeds on the sap of various plants. It pierces plant tissues using its piercing-sucking mouthparts.