Like other insects, the ladybug has an exoskeleton made of a protein like the one that forms our hair and fingernails. Its body has three parts: head, thorax, and abdomen. Each of the three body parts has a different function.
The head houses the ladybug’s mouthparts, compound eyes, and antennae. The thorax has three pairs of legs and two pairs of wings. The first pair of wings is the hardened elytra that protect the flight wings underneath. When the ladybug takes flight, the elytra open, and the thin, veined wings unfold. The abdomen contains organs for digestion, respiration, and reproduction. Adult ladybugs breathe air, but the air enters the body through openings, called spiracles, found on the sides of the abdomen and thorax.