The butterfly's body is covered by tiny sensory hairs. The four wings and the six legs of the butterfly are attached to the thorax. The thorax contains the muscles that make the legs and wings move.

Butterflies and moths undergo complete ___________________ in which they go through four different life stages.

• Egg - A ___________________ starts its life as an egg, often laid on a ___________________.
• Larva - The larva (___________________) hatches from an ___________________ and eats leaves almost constantly. The caterpillar molts (loses its old ___________________) many times as it grows. The caterpillar will increase up to several thousand times in size before pupating.
• Pupa - It turns into a pupa (chrysalis); this is a resting stage.
• Adult - A beautiful, ___________________ adult emerges. This ___________________ will continue the cycle.