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insect definition in entomology

Entomology is the study of insects. Among social insects, queen termites may live for up to 50 years, whereas some adult mayflies live less than two hours. Please select which sections you would like to print: Corrections? LiveScience - 20 Startling Facts About Insects, insect - Children's Encyclopedia (Ages 8-11), insect - Student Encyclopedia (Ages 11 and up). All major entrance exams such as JRF, SRF, NET, CET and RAS include MCQ's from Entomology. Buzzing or swarming insects are often more than just nuisance pests.  “Fly worry” is recognized by poultry and livestock producers as a serious threat to their livelihood.  Large fly populations (even non-biting flies) can decrease milk production in a herd of dairy cattle, depress egg laying in a poultry house, or reduce daily weight gain of feeder pigs.  Economic losses associated with nuisance pests can range from negligible to severe.  At least a dozen species of bird lice (Mallophaga) are considered economic pests by poultry producers.  Although these lice feed only on feathers and dry skin, they cause enough irritation to induce sleeplessness, loss of appetite, and poor health.  Lice populations in excess of 35,000 individuals have been collected from the body of a single chicken. Entomology, branch of zoology dealing with the scientific study of insects. The mass media continually reinforces this belief with reports about killer bees, giant grasshoppers, poisonous spiders, and crops destroyed by marauding bands of insects.  This cultural indoctrination has produced a society that seems to be increasingly consumed by efforts to eliminate insects from all facets of daily life.  Pest control has become big business.  Nearly 75 million pounds of broad-spectrum insecticides are manufactured and sold each year for use in American homes and gardens.  Annual revenues from insecticide sales to homeowners exceed 450 million dollars. The minor must include at least 9 credits that are not used to meet any other department, college, or university requirement. Insects have segmented bodies, jointed legs, and external skeletons (exoskeletons). Today there are about 1 million known species, or types, of insect. (The plural of insectum, namely insecta, is used by scientists as the name of the taxonomic class that … The branch of zoology concerned with the study of insects. Many insect depend for their survival follow an odour trial to a source of food to host plant and animals to … Most insects have wings. Entomology: that branch of Zoology that deals with insects and, specifically, the Hexapods. In the past the term "insect" was vaguer, and historically the definition of entomology included the study of terrestrial animals in other arthropod groups or other phyla, such as arachnids, myriapods, earthworms, land snails, and slugs. Updates? An insect is a small animal that has six legs. Modes of reproduction are quite diverse, and reproductive capacity is generally high. See more. More about entomophobia They dominate the present-day land fauna with about 1 million described species. In: JH Byrd, JL Castner, (Eds. It is a very important branch of agriculture. Most entomologists go on to work in agriculture and conservation, in ecology and land management (national parks for example). And scientists are constantly discovering new species. Definition of Attractants in Entomology A chemical which causes the insect to make an oriented movement towards its source is known as attractant. So, if you don't know your Aculeates from your Zoraptera or your Blues from your Woolly bears then this is the glossary for you. and delusionary parasitosis Treatment of entomophobia and delusionary parasitosis is difficult because the fear is irrational.  Some success has been achieved with behavioral therapies that involve systematic desensitization, starting first with imagery (pictures) and gradually working up to more direct types of exposure. But how much do you really know about their behavior and origins? Some insects advertise their presence to the other sex by flashing lights, and many imitate other insects in colour and form and thus avoid or minimize attack by predators that feed by day and find their prey visually, as do birds, lizards, and other insects. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Get exclusive access to content from our 1768 First Edition with your subscription. Entomogenous: growing in or on an insect: e.g. Synonym: persian powder. We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. Origin: F.insecte, L. Insectum, fr. Entomon means an insect and logos means to study. In a popular sense, “insect” usually refers to familiar pests or disease carriers, such as bedbugs, houseflies, clothes moths, Japanese beetles, aphids, mosquitoes, fleas, horseflies, and hornets, or to conspicuous groups, such as butterflies, moths, and beetles. Insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. They threaten the welfare of useful plants or domestic animals, They damage stored products or structural materials. Omissions? The term ‘insect’ is derived from the Latin word insectum which means ‘cut into’. In fact, about 75 percent of all animals are insects. Entomology definition is - a branch of zoology that deals with insects. Insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. While Entomology is the study of insects, the persons who study insects are called entomologists. Most children are fascinated by the living organisms that share their environment; they love to watch an ant groom itself, a bee gather nectar, or a spider build its web.  But this interest is seldom encouraged in our busy society.  Adult attitudes toward insects (and related arthropods) are generally negative — the ant is a nuisance, the bee might sting, and the spider… well just look at what happened to little Miss Muffett! This notion of “pest” is unique to humans and completely anthropocentric.  We define pests in terms of our own standards of good and bad — standards that are often based largely on aesthetics, economics, and personal welfare, and shaped by cultural bias and personal experiences.  A “pest” is defined as any organism that causes annoyance or injury to human beings, human possessions, or human interests.  The injury may be physical (bites and stings), medical (causing illness or disease), or economic (monetary loss to goods or property).  Injury may arise directly from the pest itself, or may develop indirectly as a result of the actions or behavior of the pest. The human occupants of these environments are seldom tolerant of other species — even the most benign visitors are promptly executed (or forcibly evicted). From French entomologie, from Ancient Greek ἔντομον (éntomon, “insect”) + -logie (from Ancient Greek -λογία (-logía, “-logy”)). Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Our editors will review what you’ve submitted and determine whether to revise the article. When the study of entomology is used to aid in legal death investigations, it is called Forensic Entomology. Synonyms: bug, creepy-crawly [British, informal], gogga [South Africa, informal] More Synonyms of insect To some extent, a fear of insects is quite normal.  You may react instinctively to brush away an annoying fly or jump back at the sudden appearance of a spider.  But some people are so afraid of insects that it can affect their ability to function normally in society. These people suffer from entomophobia, an irrational and often debilitating fear of insects.  People with severe entomophobia are frequently confined to their homes; they are unable to enjoy gardening, walking in the woods, or visiting the beach because they dread an encounter with an insect.  Psychiatrists estimate that 1-2% of the adult U.S. population is affected by some degree of entomophobia that limits their activity or interferes with their quality of life. Insects are often used in investigations of hormonal action, nerve and sense organ function, and many other physiological processes. Entomology 28(1): 22-29. Professor of Biology, University of Cambridge, 1952–66; Director, Agricultural Research Council Unit of Insect Physiology, 1943–67. In many species the difference in body structure between the sexes is pronounced, and knowledge of one sex may give few clues to the appearance of the other sex. Aside from ladybugs (which are considered “cute”) and butterflies (they’re “pretty”), most insects are regarded with a certain degree of fear or revulsion.  A few, like honey bees and praying mantids, may be recognized as “useful”, but all others are just “pests”. Occasionally, a fear or loathing of insects is compounded by the victim’s own imagination.  Some people convince themselves that their body has become “infested with parasites” and go to great lengths to rid themselves of the imaginary vermin.  This type of paranoia, known medically as delusionary parasitosis, is generally regarded as a form of obsessive/compulsive behavior.  It is common enough to be recognized as a psychological disorder by the American Medical Association.  One case study, reported in 1957, documents a woman who believed she was infested with “termites” that would periodically emerge from the joints of her arms and legs.  Her physician sent her home to “collect some specimens” and a week later she returned with a plastic bag full of “termites” which, upon microscopic examination, proved to be scabs and skin fragments she had picked or scratched from her body. Jh Byrd, JL Castner, ( Eds Latin words entomon, “. 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