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[[image:robal.png|right|300px|thumb|Insect anatomy
A- Head   B- Thorax   C- Abdomen

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Wikipedia About Insect

[[image:robal.png|right|300px|thumb|Insect anatomy
A- Head   B- Thorax   C- Abdomen

Insects (Class Insecta) are arthropods, having a hard exoskeleton, a three-part body (head, thorax, and abdomen), three pairs of jointed legs, compound eyes, and two antennae. They are the most diverse group of animals on the planet and include approximately 2,200 species of praying mantis, 5,000 dragonfly, 20,000 grasshopper, 82,000 true bug, 120,000 fly, 110,000 bee, wasp, ant and sawfly, 170,000 butterfly and moth, and 360,000 beetle species described to date. The number of extant species is estimated at between six and ten million, with over a million species already described. Insects represent more than half of all known living organisms and potentially represent over 90% of the differing life forms on Earth. 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 crustaceans.

Adult modern insects range in size from a 0.139 mm (0.00547 in) fairyfly (Dicopomorpha echmepterygis) to a long stick insect (Phobaeticus chani). The heaviest documented present-day insect was 70 g (2½ oz) Giant Weta, though the Goliath beetles Goliathus goliatus, Goliathus regius and Cerambycid beetles such as Titanus giganteus hold the title for some of the largest species in general.

The largest known extinct insect is a kind of dragonfly, Meganeura.

Body structure

Insects possess segmented bodies supported by an exoskeleton, a hard outer covering made mostly of chitin. The segments of the body are organized into three distinctive but interconnected units, or tagmata; a head, a thorax, and an abdomen. The head supports a pair of sensory antennae, a pair of compound eyes, if present, one to three simple eyes or (ocelli) and three sets of variously modified appendages that form the mouthparts. The thorax has six segmented legs (one pair each for the prothorax, mesothorax and the metathorax segments making up the thorax) and two or four wings (if present in the species). The abdomen (made up of eleven segments some of which may be reduced or fused) has most of the digestive, respiratory, excretory and reproductive internal structures.

Nervous system

The nervous system of an insect can be divided into a brain and a ventral nerve cord. The head capsule (made up of six fused segments) has six pairs of ganglia. The first three pairs are fused into the brain, while the three following pairs are fused into a structure called the subesophageal ganglion.

The thoracic segments have one ganglion on each side, which are connected into a pair, one pair per segment. This arrangement is also seen in the abdomen but only in the first eight segments. Many species of insects have reduced numbers of ganglia due to fusion or reduction. Some cockroaches have just six ganglia in the abdomen, whereas the wasp Vespa crabro has only two in the thorax and three in the abdomen. And some, like the house fly Musca domestica, have all the body ganglia fused into a single large thoracic ganglion.

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News about Insect

The future of robots is rat-shaped

PhysOrgThe autonomy of robots today is similar to that of an insect," snorts Guillot, a researcher at France's Institute for Intelligent Systems and Robotics (ISIR), one of the "Psikharpax" team. Such failures mean it is time to change tack, argue some ... http://www.physorg.com/news163591762.html

Group Wants Insect Parts Out Of Food Color

Post ChronicleA Washington watchdog group applauded a new labeling rule governing food coloring made from insect parts but its leaders still want the substance banned. The U.S. Food and Drug Administration approved a new regulation, set to take effect in January ... http://www.postchronicle.com/news/strange/article_212234464....

Insect Biotech Co., Ltd - Company Report - companiesandmarkets.com ...

PR InsideThis report is an update to a previous version and is updated to 24th April 2009. These reports are updated on a fortnightly basis. If you are interested in purchasing this report, you will be sent the latest version. Private Company Reports provide ... http://www.pr-inside.com/insect-biotech-co-ltd-company-r1292...

Evolving Mosquitoes in the Galapágos

New York TimesSince then the insect has evolved so much it is practically a distinct species from the mainland variety. For one thing, the insect has adapted to be able to feast on the blood of lizards, tortoises and other reptiles and not solely on mammals, as it ... http://www.nytimes.com/2009/06/02/science/02obskeeter.html

Robots Borrow Hydro-Repelling Tech from Insect Legs to Walk on Water

Popular ScienceA robot that can walk on water: such a miracle is one step closer to reality, thanks to some new research that learns from the work nature has done with water striders. Walking on water may seem like a superpower and the name scientists have give the ... http://www.popsci.com/scitech/article/2009-06/robots-borrow-...

Search results for Insect

Insect Skateboards - Acceleration Science

Insect Skateboards: Builders of the finest carving longboards. 100% handmade in the USA.http://www.insectskateboards.com/

insect - Hutchinson encyclopedia article about insect

Any of a vast group of small invertebrate animals with hard, segmented bodies, three pairs of jointed legs, and, usually, two pairs of wings; they belong among the arthropods and ... http://encyclopedia.farlex.com/insect

Bugbios Shameless Promotion Of Insect Appreciation

The fascinating stories of insects and the roles they play in our lives. Cultural entomology, insect macrophotography, educational resources and links to other web sites.http://www.insects.org/

insect definition of insect in the Free Online Encyclopedia.

insect, invertebrate animal of the class Insecta of the phylum Arthropoda Arthropoda (ärthrŏp`ədə) [Gr.,=jointed feet], largest and most diverse animal phylum.http://encyclopedia2.thefreedictionary.com/Insect

insect - Definition of insect at YourDictionary.com

noun. any of a large class (Insecta) of small arthropod animals characterized, in the adult state, by division of the body into head, thorax, and abdomen, three pairs of legs on ... http://www.yourdictionary.com/insect

Wikipedia results for Insect

Insect - Wikipedia, the free encyclopedia

Insects (Class Insecta) are the biggest class of arthropods and the only ones with wings. They are the most diverse group of animals on the Earth.http://en.wikipedia.org/wiki/Insect

Beetle - Wikipedia, the free encyclopedia

Heteroptera - insect suborder that is superficially similar to beetles; Blister beetle dermatitis References General references. Poul Beckmann, Living Jewels: The Natural Design of ... http://en.wikipedia.org/wiki/Beetle

Insect bites and stings - Wikipedia, the free encyclopedia

Insect bites and stings occur when an insect is agitated and seeks to defend itself through its natural defense mechanisms, or when an insect seeks to feed off the bitten person.http://en.wikipedia.org/wiki/Insect_bite

Insect flight - Wikipedia, the free encyclopedia

Insects are the only group of invertebrates known to have evolved flight. Insects possess some remarkable flight characteristics and abilities, still far superior to attempts by ... http://en.wikipedia.org/wiki/Insect_flight

Cricket (insect) - Wikipedia, the free encyclopedia

Crickets, family Gryllidae (also known as "true crickets"), are insects somewhat related to grasshoppers and more closely related to katydids or bush crickets (family Tettigoniidae ... http://en.wikipedia.org/wiki/Cricket_%28insect%29
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Videos found for Insect

Eye On Health: Treating Summertime ...

Eye On Health: Treating Summertime Insect BitesDr. Michelle Ho with Baylor Health Care System explains what needs to be done when people get bitten by insects – including bees and spiders.Windows Media - Video

Super Friends: Insect Tracks

Super Friends: Insect TracksBatman and Robin search for clues that will help them to find the stolen missile.Flash - Video

Cyborg insects

Cyborg insectsRead more: http://technology.newscientist.com/channel/tech/mg19726461.800-the-cyborg-animal-spies-hatching-in-the-lab.html Watch some cyborg insects that are being developed and...Flash - Video

Animal Bites and Insect Bites/Sting...

Animal Bites and Insect Bites/StingsAnimal bites aren't only painful; they can lead to an infection, tetanus, even rabies. In this video, icyou's medical editor, Mona Khanna, MD, MPH, discusses first-aid treatment...Flash - Video

The Insect Guide - Liline

The Insect Guide - LilineFirst Video Taken Form New Album "6ft In Love"Windows Media - Video

Answers for Insect

MeemsWhat winged insect is flying during the winter?MeemsWelllllllllllllllllllllllllll... Where do you live (state, city, country, etc)? What did it look like? We need more details...colorfulbookswhat kind of insect live in flute paper and how to kill it ?colorfulbooksCan you put it in a freezer bag (ziplocked) and freeze it?I CareHow long after an insect bite does the area start to itch?I CareMost people start itching immediately after the bite because of the allergic reaction most people have. In your case, it sounds like something is bitting you that you have no allergic reaction to t...RjoyWhat insect leaves a residue behind as it moves?Rjoya snail or a slug will leave a residueJack MehofferWhat kind of insect would you prefer to eat with your breakfast cereal?Jack Mehoffercorm flakes with a bee. well its nice with a dash of honey on top, x
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