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Insects undergo considerable change in form during the pupal stage, and emerge as adults. Butterflies are well-known for undergoing complete metamorphosis; most insects use this life cycle. Some insects have evolved this system to hypermetamorphosis. Complete metamorphosis is a trait of the most diverse insect group, the Endopterygota. [82]
In some varieties of English, all terrestrial arthropods (including non-insect arachnids and myriapods) also fall under the colloquial understanding of bug. [a] Many insects with "bug" in their common name, especially in American English, belong to other orders; for example, the lovebug is a fly [9] and the Maybug and ladybug are beetles. [10]
The Pterygotes (winged insects) underwent a major radiation in the Carboniferous (358 to 299 million years ago) while the Endopterygota (insects that go through different life stages with metamorphosis) underwent another major radiation in the Permian (299 to 252 million years ago). Most extant orders of insects developed during the Permian period.
Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages thereof being egg, larva, pupa, and imago. The processes of entering and completing the pupal stage are controlled by the insect's hormones, especially juvenile hormone, prothoracicotropic hormone, and ecdysone. The act ...
Aquatic insects or water insects live some portion of their life cycle in the water. They feed in the same ways as other insects . Some diving insects, such as predatory diving beetles , can hunt for food underwater where land-living insects cannot compete .
Jul. 31—Professor Wyatt Hoback's love for bugs sprouted at a young age. "I'm basically Peter Pan," Hoback said. "I was chasing bugs at six, and I'm doing it now." Woback has taught for 10 years ...
The nymph is the dominant life history stage of the mayfly. Different insect species vary in their tolerance to water pollution, but in general, the larval stages of mayflies, stoneflies (Plecoptera) and caddis flies (Trichoptera) are susceptible to a number of pollutants including sewage, pesticides and industrial effluent.
Holometabolism, also called complete metamorphosis, is a form of insect development which includes four life stages: egg, larva, pupa, and imago (or adult). Holometabolism is a synapomorphic trait of all insects in the clade Holometabola. Immature stages of holometabolous insects are very different from the mature stage.