INSECT METAMORPHOSIS
Definition of an Insect:
To be a true insect, it must have:
? Three Body parts
? Six Legs
? Two Antenna
? Two Pairs of wings.
Flies are an exception in that they have one pair of wings and one pair of modified wings called "haltres", which are balance organs. If the ADULT insect does not have of the above structures, they are not insects. For example: a Spider has only two body parts, and no wings, therefore, it is not an insect.
Complete Metamorphosis:
This is the most common growth process for insects. There are four clearly defined different stages in a Complete Metamorphosis development, which are egg, larva, pupae, and adult. Each stage has a completely different form, mouthpart, food source, and lives in different locations. The egg stage is laid by the adult. It hatches into a larvae form, sometimes commonly called a caterpillar. The sole purpose of the larvae is to eat and prepare to incase itself into the next stage called the pupae, which looks much like a cocoon. When in the pupae stage the insect completely re-organizes its body form and hatches into the adult.
Samples of the Complete Metamorphosis are moth, butterflies, flies, fleas, ant's bees and wasps.
Gradual Metamorphosis:
This is not a common as the complete metamorphosis. There are many types of insects that do have the General Metamorphosis. With the General Metamorphosis there are three distinct stages of development, which are the egg, nymph, and adult. The eggs are laid by the adult. The eggs emerge into the nymph stage that look similar to the adult but is not the same. Nymphs and adults may look different, but live and feed in the same places. They have the same mouthparts and eat the same food. The nymph stage looks like an adult but is smaller, has no wings, and is not sexually mature. The nymph stage has to molt several times to develop completely into an adult. With each molt of the nymph the insect grows larger and more developed until it molts for the last time into an adult.
Samples of Gradual Metamorphosis are cockroaches, termites, grasshoppers, bedbugs, and earwigs.
Without Metamorphosis:
This is the least common form of development. There are only two types of insects having Without Metamorphosis development. There are three similar stages of the Without Metamorphosis development, which are the egg, an instaring stage, and adult. The eggs are laid by the adult. The eggs emerge out as young looking adults. The young grow up shedding their exoskeleton several times before reaching the adult stage. The young and adults live in the same place, have the same mouthparts, and eat the same food.
Samples of Without Metamorphosis are silverfish and the firebrat.Call, 239-455-4300,
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