insect

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insect

 [in´sekt]
any individual of the class Insecta.
insect bites and stings injuries caused by the mouth parts and venom of insects (see also bee sting). Similar conditions are caused by members of the class arachnida, which includes the spiders, scorpions, ticks, and mites; see also spider bite. The most common biting insects are mosquitoes and ants. Bites and stings can be the cause of much discomfort, but there is usually no real danger, unless the individual experiences an allergic or anaphylactic reaction. More commonly, a local infection can develop from scratching the site of the bite. Some insects establish themselves on the skin as parasites, others inject poison, and still others transmit disease. A knowledge of first aid measures for bites and stings can do much to relieve discomfort, prevent infection, and sometimes even save a life.

insect

(ĭn′sĕkt′)
n.
1.
a. Any of numerous arthropod animals of the class Insecta, having an adult stage characterized by three pairs of legs and a body segmented into head, thorax, and abdomen and usually having one or two pairs of wings. Insects include the flies, crickets, mosquitoes, beetles, butterflies, and bees.
b. Any of various other small, chiefly arthropod animals, such as spiders, centipedes, or ticks, usually having many legs. Not in scientific use.
2. An insignificant or contemptible person.

in′sect′ adj.
in′sec·ti′val (ĭn′sĕk-tī′vəl) adj.
Insectclick for a larger image
Fig. 197 Insect . (a) Vertical section, and (b) front view of insect mouthparts.

insect

any small air-breathing arthropod of the class Insecta, containing organisms that normally in the adult have six legs, three distinct regions to the body (head, thorax and abdomen), one pair of antennae and one or two pairs of wings. Mouthparts are often adapted to the method of feeding, such as biting, piercing and sucking.

Abdominal appendages are absent except in the more primitive groups such as springtails. Most insects have a distinct juvenile stage, a nymph (see EXOPTERYGOTA or a larva (see ENDOPTERYGOTA). These undergo METAMORPHOSIS to form the adult. Insects comprise about five-sixths of all known animal species. The class contains the following groups:

Subclass: APTERYGOTA (wingless)

Orders: Protura

Collembola - springtails

Diplura - japygids

Thysanura - bristletails

Subclass: PTERYGOTA (normally winged) EXOPTERYGOTA (HETEROMETABOLA or HEMIMETABOLA)

Orders: Odonata - dragonflies

Ephemeroptera - mayflies

Orthoptera - grasshoppers

Dermaptera - earwigs

Plecoptera - stoneflies

Isoptera - termites

Embioptera - embiids

Mallophaga - biting lice

Anoplura - sucking lice

Psocoptera - book lice

Zoraptera

Hemiptera - bugs

Thysanoptera - thrips

ENDOPTERYGOTA (HOLOMETABOLA)

Mecoptera - scorpion flies

Neuroptera - lacewings

Trichoptera - caddisflies

Lepidoptera - butterflies and moths

Diptera - flies

Siphonaptera - fleas

Coleoptera - beetles

Strepsiptera - stylops

Hymenoptera - ants, bees and wasps

The more important insect orders are described under separate headings.

insect

any individual of the class Insecta.

insect bites and stings
injuries caused by the mouth parts and venom of insects and of certain related creatures, known as arachnids—spiders, scorpions, ticks—but popularly classified with insects. Bites and stings can be the cause of much discomfort. Usually there is no real danger, although a local infection can develop from scratching. Some insects, however, establish themselves on the skin as parasites, others inject poison, and still others transmit disease. See also bee sting.
insect growth regulators (IGRs)
substances found naturally in insects which regulate morphogenesis and reproduction; synthetic chemicals with similar activity are used topically and in the environment to control ectoparasites, particularly fleas, as a larvicide and ovicide. Called also juvenoids. See also methoprene, fenoxycarb.
insect larva
the second stage in the standard insect life cycle, the maggot or caterpillar.
insect pupa
stage 3 in the insect life cycle. Inert, dormant stage from which the adult emerges.
insect vector
insects may carry infection mechanically on feet or mouthparts, by passage through the digestive tract but without the insect being infected, or by becoming an intermediate host with some part of the parasite's life cycle taking place in insect tissues.
insect worry
swarms of biting insects cause sufficient worry to interfere with grazing and the animals lose weight.

Patient discussion about insect

Q. an insect bite seems infected and is bleeding... the area under the skin is hard and sore... when pressed it bleeds quite a bit

A. It sounds like you have cellulitis around the area of the bite, and you should see a doctor to decide whether or not this requires antibiotics.

Q. My friend told me that people who allergic to dust are actually allergic to small insect. Is he fooling with me?

A. thanks :)

Q. does mosquito bites considered as an edema a bet with a friend- please help solve an issue an help me win a new I pod :)

A. (don't take the mini i-pod, it sucks). it's true-the mosquito has a number of proteins and materials in his saliva that works as anticoagulants and vasodilators (blood vessel broadening). these causes the bite area to start an immune reaction and one of the consequences is an edema-"an increase of interstitial fluid in any organ", that means fluids are exiting blood system. in this case- not too much...

More discussions about insect