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د خزدکو د ژوند پړاؤ تر ډېره توپير لري ، خو ډېری د هګيو له لارې وده کوي د خزدکو وده د الاستيکه هډوانې په رابرسېره کېدو سره رامنځته کېږي. او هم د راز رازو کروزونو (د پوستکي څخه راوتلو) له لارې راولاړېږي . د هغوی د اومه پړاؤ له پخو د هغه څخه په بڼه کې توپير لري. همدارنګه په عاداتو او اوسېدنځایونو کې سره توپير لري او کولای شي چې د خزدکو د بشپړتابه (pupal)غیر فعاله بهیر ورسره مل وي. په همغو ګروپونو کې د بشپړتابه پړاؤ يا بهیر روانېږي . هغه خزدکي چې د دغو بهیرونو څخه په شا پاتې کېږي يا نا بشپړه پاتې کېږي هغو د پيوپال (د بشپړتابه د مرحلې بهیر) کې پاتې راځي او همدارنګه د پوخواله له پړاؤ څخه چې څه د لومړنيو رامنځته کېدو مرحلې بلل کېږي. د شپږپښو وال تر ټولو د اوچت پړاؤ بهیر لا پورې نامالومه دی . د لرغوني پېر پاتې شوني خزدکې په ډېر غټ غټ اندازه کې موندل شوي دي. لدې جملې څخه دغبرګو ښامارانو چې د وزرو اندازه ېې ۵۵ څخه تر ۷۰ سانتي ميټره (۲۲ــ ۲۸ انچ) پورې ياد شوي دي. تر ټولو بېلابېلو د خزدکو ګروپونه د ګلانو او بوټو پر سر د راټوکېدلو باندې اخته وي.
'''Insects''' ([[Class (biology)|Class]] '''Insecta''') are [[arthropod]]s, having a hard [[exoskeleton]], a three-part body ([[head]], [[thorax]], and [[abdomen]]), three pairs of jointed [[leg]]s, [[compound eye]]s, and two [[antenna (biology)|antennae]]. They are the most diverse group of [[animalia|animals]] on the planet and include approximately 30 [[Notoptera]], 35 ''[[Zoraptera]]'', 150 [[snakefly]], 200 [[Thysanura|silverfish]], 300 [[Megaloptera|alderfly]], 300 [[Embioptera|webspinner]], 350 [[Archaeognatha|jumping bristletail]], 550 [[Mecoptera|scorpionfly]], 600 ''[[Strepsiptera]]'', 1,200 [[Trichoptera|caddisfly]], 1,700 [[Plecoptera|stonefly]], 1,800 [[earwig]], 2,000 [[flea]], 2,200 [[Mantodea|mantis]], 2,500 [[mayfly]], 3,000 [[louse]], 3,000 [[Phasmatodea|walking stick]], 4,000 [[cockroach]], 4,000 [[Neuroptera|lacewing]], 4,000 [[termite]], 5,000 [[dragonfly]], 5,000 [[thrips]], 5,500 [[Psocoptera|booklouse]], 20,000 [[Orthoptera|cricket, grasshopper, and locust]], 82,000 [[Hemiptera|true bug]], 110,000 [[Hymenoptera|ant, bee, sawfly, and wasp]], 120,000 [[Diptera|true fly]], 170,000 [[Lepidoptera|butterfly and moth]], and 360,000 [[Coleoptera|beetle]] species described to date. The number of extant species is estimated at between six and ten million<ref name="Chapman"/><ref>{{cite journal |quotes=no |author=Vojtech Novotny, Yves Basset, Scott E. Miller, George D. Weiblen, Birgitta Bremer, Lukas Cizek & Pavel Drozd |year=2002 |title=Low host specificity of herbivorous insects in a tropical forest |journal=[[Nature (journal)|Nature]] |volume=416 |pages=841–844 |doi=10.1038/416841a}}</ref><ref>{{cite book|author=Erwin, Terry L. |year=1997 |title=Biodiversity at its utmost: Tropical Forest Beetles |pages=27–40}} In: {{cite book |author=Reaka-Kudla, M. L., D. E. Wilson & E. O. Wilson (eds.) |title=Biodiversity II |publisher=Joseph Henry Press, Washington, D.C.}}</ref>, with over a million [[species]] already described. Insects represent more than half of all known living organisms<ref name="Chapman">{{cite book |author=Chapman, A. D. |year=2006 |title=Numbers of living species in Australia and the World |pages=60pp |publisher=Canberra: [[Australian Biological Resources Study]] |isbn=978-0-642-56850-2 |url=http://www.deh.gov.au/biodiversity/abrs/publications/other/species-numbers/index.html}}</ref><ref>{{cite web|url=http://www.globalchange.umich.edu/globalchange2/current/lectures/biodiversity/biodiversity.html|title=Threats to Global Diversity|last=Wilson|first=E.O. |accessdate=2009-05-17}}</ref> and potentially represent over 90% of the differing life forms on Earth.<ref>{{cite journal|last=Erwin|first=Terry L.|year=1982|title=Tropical forests: their richness in Coleoptera and other arthropod species|journal=Coleopt. Bull.|volume=36|pages=74–75}}</ref> Insects may be found in nearly all environments, although only a small number of species occur in the oceans, a habitat dominated by another arthropod group, the [[crustacean]]s.
Adult modern insects range in size from a 0.139 mm (0.00547 in) [[fairyfly]] (''[[Dicopomorpha echmepterygis]]'') to a {{convert|56.7|cm|in|adj=on}} long [[stick insect]] (''[[Phobaeticus chani]]'').<ref>{{cite web |url= http://www.nhm.ac.uk/about-us/news/2008/october/worlds-longest-insect-revealed.html|title= World's longest insect revealed|accessdate=2008-10-16 |work= |publisher= [[Natural History Museum]]|date=2008-10-16 }}</ref> The heaviest documented present-day insect was a 70 [[gram|g]] (2½ [[Ounce|oz]]) [[Giant Weta]], though the [[Goliath beetle]]s ''[[Goliathus goliatus]]'', ''[[Goliathus regius]]'' and [[Cerambycidae|Cerambycid]] beetles such as ''[[Titanus giganteus]]'' hold the title for some of the largest species in general. The largest known extinct insect is an ancient dragonfly, ''[[Meganeura]]''.<ref name="RESPIRATION">{{cite journal|last= SCHNEIDERMAN |first=HOWARD A.|coauthors=WILLIAMS, CARROLL M. |date=1955|title=AN EXPERIMENTAL ANALYSIS OF THE DISCONTINUOUS RESPIRATION OF THE CECROPIA SILKWORM|journal=Biol. Bull.|publisher=Biol. Bull.|issue=109|pages=123–143}}</ref>
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