Antenna- A jointed, movable part of an insect's body through which it may touch, smell or taste; antennae grow in pairs from insects' heads.

Exoskeleton- the hard outer covering of an insect or other animal that has no bone inside. Exoskeletons don't grow, so ladybug larvae must molt (see molt)

Larva- the immature stage of an insect that undergoes metamorphosis. Ladybug larvae are wing-less.

Metamorphosis- a big change or several changes in the life of an insect or other living thing--for example, a ladybug changes from larva to pupa to imago.

Molt- to shed a layer of feathers or skin. Ladybug larvae shed their exoskeleton at least three times before they pupate.