This insect is easily identified by the coglike “wheel” on its back. Like most true bugs, it has membranous wings that fold flat along the back when at rest (creating an X pattern on the back), and mouthparts joined into a strawlike structure used for piercing and sucking. As with other members of the assassin bug family, the wheel bug has a clawlike beak with 3 segments that can fold into a groove beneath the insect’s body. The first segment on the first pair of legs is somewhat thickened, and the sides of the abdomen extend beyond wings. The head is very narrow, the antennae jointed. Adult wheel bugs are usually gray or brownish; the immature nymphs are red with black legs, and can look rather spiderlike.