Butterflies as a group, are probably the most beautiful of all insects. They are named for the yellow color of some common species of butterflies.
The butterfly has a large eye on each side of its head. Each eye is made up of a large number of tiny eyes. Some butterflies have as many as 20,000 of these tiny eyes crowded close together in each eye. The butterfly’s mouth has the shape of a long hollow tube, called a proboscis. The butterfly uses the proboscis to suck up the flower nectar on which it feeds.
The young of the butterflies are called caterpillars. These are long, soft, wormlike creatures that eat the leaves of plants. Nobody would guess that an ugly crawling caterpillar could develop into a creature with jewel-like wings and take a life in the air.
Actually, a butterfly passes through four distinct stages in its life’s span. These are the egg stage, the larva or caterpillar stage, the pupa stage, and the adult (butterfly) stage. A newly hatched larva is tiny, but it has an enormous appetite and grows very rapidly. When it is fully-grown it is ready to enter the quiet stage of its life, the pupa stage.
It is in the pupa stage that a most wonderful transformation takes place. The caterpillar sheds its skin, and becomes covered with an oddly shaped case of hard skin, called a cocoon. Inside the case great changes are going on. The whole body turns to a soft, creamy liquid, out of which the wings, legs and other parts of the adult butterfly are slowly formed. When the adult insect is ready to come out, the shell of the pupa splits open. The full-grown insect, weak and covered with moisture, then pushes its way out of the shell. The butterfly crawls onto a twig or other resting place. Gradually the wings unfold, becoming flat and stiff, and the butterfly is ready to fly away and begin its life in the air. |