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Created with Fabric.js 1.4.5 Types of Metamorphosis in insects Anamorphosis All insects begin as eggs and transform into adults through a process called metamorphosis. This process varies among insect orders and can be categorized into four types of metamorphosis; anamorphosis, ametamorphosis, simple metamorphosis, and complete metamorphosis. In all types, growth occurs when insects shed their exoskeletons, called molting. Within the types of metamorphosis, the duration, the number of molts, and types of stages vary greatly. Insectology.wordpress.comby Coraline egg--> larva --> adultAs larva grow into adulthood, they increase in body size and develop wings outside the body. There are two types of simple metamorphosis: gradual and complete. Complete metamorphosist egg--> larva --> pupa --> adultThis form of development include an additional stage after the larval stage called pupa. Pupa cannot feed and are immobile wrapped in a protective material, a cocoon or exoskeleton remaining from the larval stage. Larva have chewing mouthparts and differ greatly from adults. Wings develop outside the body. Megaloptera, Neuroptera, Diptera, Lepidoptera, and Hymenoptera. egg--> larva --> adultLarva emerge with fully-developed abdomens. This type of development is distinguished by the continuation of molting through adulthood. Insect orders that demonstrate this growth process are Collembola, Diplura, Microcoryphia, and Thysanura. Simple metamorphosis Ametamorphosis *Proturaegg--> larva --> adultlarva emerge with an underdeveloped abdomen. During several laval stages, they produce four aditional segments before adulthood. Insects from the order Protura are the only hexopods that go through anamorphosis Gradual metamorphosisLarva, called nymphs, resemble smaller adults and live on land. Blattodea, Isoptera, Mentodea, Grylloblattodea, Dermaptera, Orthopetra, Phasmida, Hemiptera. Incomplete metamorphosisLarva, called naiads, appear dramatically different from adults forms. While adults are completely terrestrial, naiads are aquatic. Odonata, Ephemeroptera, and Plecoptera are the only insects orders that undergo incomplete metamorphosis.
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