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What is that which has never been felt, seen, nor heard, never existed and still has a name?
What Is Metamorphosis?
Eggs
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Metamorphosis is a Greek word that means transformation or change in shape. Metamorphosis is the series of developmental stages insects go through to become adults. Butterflies and moths have four stages of life: the egg, the larva (the caterpillar stage), the pupa (the chrysalis phase) and the adult. They undergo a complete metamorphosis.
The first stage of the life cycle is th e egg. The small butterfly eggs are laid on plants by the adult female butterfly. They are usually laid on the underside of leaves that are edible by butterflies. These plants become the food for the hatching caterpillars. They can be laid in the spring, summer or fall depending on the species of the butterfly. They lay a lot of eggs at once so that at least some of them will survive. Many type s of insects, animals and birds eat the butterfly eggs. The eggs have a hard outer shell that protects the larva inside. Inside the egg it is lined with wax. This will keep the egg from drying out. The caterpillar emerges from the egg in approximately five days.
The second stage is the larva or caterpillar. Larve have three body parts - the head, thorax and abdomen. Caterpillars have six eyes - but it still cannot see very well. The antennae helps to guide the larva. They breathe through holes in the side of their bodies. The job of the caterpillar is to eat. The caterpillar has to eat as much food as it possibly can. The caterpillar begins by eating it’s own egg shell and then eats leaves. The caterpillar will grow several times it’s original size to around two inches. An example is th e Monarch butterfly egg is about the size of a pinhead and the caterpillar that hatches from this egg is not much larger. So, two inches is a whole lot of growth! Food that is ate at this time is stored and used later as an adult. As they grow, they molt. Molt means that they shed their skin 5 to 6 times over several weeks and then it begins to look for a place to start the next stage of becoming a b utterfly. The third stage is the pupa or chrysalis. When the caterpillar is full grown and stops eating, it becomes a pupa or chrysalis. Depending on the type of butterfly, the pupa may be suspended under a tree branch, hidden in leaves or buried underground. This stage lasts a few weeks, a month or even two years depending on the butterfly species. The outside of the chrysalis looks like a hard sac but the inside is a soft cocoon. Outside, it looks like nothing is going on but on the inside changes are happening. Special cells that were in the larva are now growing rapidly. These cells will become the legs, wings, eyes and other parts of the adult butterfly. The fourth stage begins as the adult butterfly emerges from the chrysalis. The adult butterfly has three body parts - the head, the thorax and abdomen. It has six long legs. It curls up the front ones so sometimes it looks like they only have four! They have two sets of wings that are called hindwings and forewings. They eat nectar from flowers or minerals from shallow water by sucking with their long straw-like tongue - although some butterflies do not eat at all! They fly using their large colorful wings. The only thing they can’t do is grow at this stage. The main goal for the adult butterfly is to find a mate and lay eggs. Most butterflies only have a lifespan of two weeks though some species hibernate during the winter and live several months! Adult Emerges Pupa (Chrysalis) Larvae (Caterpillar) Adult Butterfly
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