Key to insect orders a tool for insect identification. Quizlet flashcards, activities and games help you improve your grades. Sight recognition of insect orders laboratory exercise to follow. Insects class insecta have segmented bodies, jointed legs, and external skeletons. They have strong biting mouthparts with which to chew seeds, wood or leaves. A dichotomous key is a tool that uses paired statements or questions to guide you to the solution.
Some new classifications and new insect orders in current literature, but it is a good general reference. Classification of class insecta upto orders phylum. In head a pair of antenna and a pair of compound eyes are usually present. Oct 4, 2012 entomologists have classified insects in 30 different orders, some of them, like beetles or flies, are familiar to everyone, but others are more obscure. Portions of this work have been adapted or used directly from sources in the creative commons. More than 1 million of the categorized 2 million species are arthropods insects spiders. Pdf the importance of insects in agricultural ecosystems. This simplified key covers insects showing common characteristics for the order. Millions of years ago 500 400 300 200 100 present day wings can fold over backno external wing developmentfeeding on flowering plants diversification of pollinators of flowering plantssocial behavior ancestors of insects, spiders, and centipedes hit landfirst insects first winged insects moths bees, ants wingless wings cant fold. Taxonomy and classification of insects academicscope. Recent classification of orders of insects keywords. Classification of insects royal entomological society. Classification of insects refers to the arrangement of insects into groups and the groups into systems called classification taxonomy this is the science of identifying, naming and classifying organisms.
Classification of class insecta upto orders insect is a six legged arthropod. Although the affinities of the hemiptera with other insect orders need further clarification, there is no doubt about the monophyly of the order. Differential attraction of insect orders to different. More discussion about this classification, with a list of more detailed references, can be found in peter c. The class hexapoda is generally studied under a classification system with approximately 30 orders. The key included in this guide is only useful for keying adult insects to order. Also, this key does not cover other creatures related to insects, like spiders, sowbugs, and centipedes. The insects class insecta are divided into a number of orders. Classification of insects refers to the arrangement of insects into groups and the groups into systems called classification. Presented at seminar to entomology department 12 october 2015. Insect groups orders amateur entomologists society aes.
Taxonomy this is the science of identifying, naming and classifying organisms. This key covers insect orders commonly and occasionally observed. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Entomology the study of insects dominant groups of animals on earth today life on earth. Insect orders insect, bugs and spider identification. How to distinguish the orders of insects at this point, it may be useful to present a key to the orders of insects, which will serve both as an example of a key in use, and as a first step in identifying a specimen. Find out how insects are classified in orders, families, genera and species. Usually two pairs of wings absent in many insects such as lice, eas, ants.
Economically important insect orders purdue university. The purpose of these documents is to provide entomology instructors with a standard set of materials to teach the taxomony of orders and common families of insects. This means that you may have to use additional keys to determine the order of that specimen. Insects are small creatures whose bodies are divided into three different partsa head, a thorax, and an abdomenhave 3 pairs of legs, and often times have a pair of antennae and compound eyes. Termites are usually small or medium sized, whitish or colourless insects, with short antennae. The insect orders an introduction each to of the 32 orders of insects. They form a pupal case, inside of which the pupae change in form and in color and develop wings. Insect, class insecta or hexapoda, any member of the largest class of the phylum arthropoda, which is itself the largest of the animal phyla. Legs of insects vary greatly in size and form and are often used for classification purposes walking, jumping, diggings, grasping, feeling, swimming, carrying loads, building nests, and cleaning leg adaptations grasshoppers. Order coleoptera beetles b first pair of wings reduced in size, hind wings are large.
These are grouped together into two subclasses called the apterygota wingless insects and the pterygota winged insects. If it has more than 8 legs, it is neither an insect nor a spider. See the attributions section at the back of the book for a complete list of sources, authors, artists, and licenses. Coleoptera beetles, weevils life cycle complete metamorphosis. Insects have been hugely successful in terms of both species richness and.
Economically important insect orders insect feeding guilds characteristics and examples of economically important insects teaching objective. Ancestors of insects, spiders, and centipedes hit land. This order includes some of the best known and most important of our insect enemies. Insect orders about 28 different orders of insects divided into these orders based on structure of wings and. Insect identification part i classes of arthropoda, orders of insecta 5 key to the orders of insectsnormally found in insect collections once you have determined that the organism you have before you is an insect you may wish to further identify it. This stage is repeated a varying number of times, depending on species, until hormonal changes cause the larvae to pupate.
Apart from the hymenoptera bees, ants and wasps, termites are the only insects that live in social groups. Insects that eat pests parasites insects complete their life inside a pests parasitic wasp predators insects that consume other insects lady beetles pollinators insects that move pollen between plants wasps, bees and flies decomposers insects that feed on dead and decaying plant and animal matter. The questions in this quiz and worksheet will address these questions, helping you learn more about insects. If there are no forceps, it is probably a beetle, family. Barnards book the royal entomological society book of british insects, published by wileyblackwell in 2011, and obtainable from the res. Many orders wont be encountered or noticed because of their size, habitat, or life cycle. Usually two pairs of wings absent in many insects such as lice, fleas, ants. Unless your specimen is missing legs, insects have six legs whereas spiders have eight legs. Over 150,000 living species of hymenoptera have been described, in addition to over 2,000 extinct ones. Common true bugs and related insects orders hemiptera and homoptera in the wichita mountains and surrounding areas angel chiri entomologist introduction a word about common names the scientific name of an organism, whether plant or animal, consists of the genus and species, written in italics. Chewing insects chew off portions of plant piercingsucking insects pierce skin and suck up plant juices internal feeders gain entrance into plant and feed on the inside subterranean insects attack plant from below the soil surface injury by laying eggs nest materials remove tissue to use in nests. Insect images is a joint project of the university of georgia warnell school of forestry and natural resources, college of agricultural and environmental sciences department of entomology, center for invasive species and ecosystem health, georgia museum of natural history, the entomology society of america and usda identification technology. Not all insects will be able to be determined here. Modern humans200,000 years insects350 million years.
A list of the orders of insects with links to more information about each order. Common true bugs and related insects orders hemiptera. A pictorial key to the order of adult insects winged wingless go to page 64 front wings hardened, leathery or parchmentlike at least at the base front wings membranous go to page 61 chewing mouthparts sucking mouthparts without pincerlike cerci with pincerlike cerci front wings leathery at base and membranous at end front wings of uniform. If you decide that your specimen may not be included here, use the reference books.
Taxonomy is the day today practice dealing with organism kinds, handling and identification of specimen, publication of data, study of literature and analysis of. Scuttling along the forest floor, buzzing between flowers, or simply basking in the sun. Orders and selected families of insects department of. Insects are distinguished from other arthropods by their body, which is divided into three major regions. Similar to coleoptera but with short wing covers and with abdominal forceps. When they emerge from the egg, immature ametabolous insects look like tiny versions of their adult counterparts. But what are the different types and how are they classified. Of all the insect orders, orthoptera displays the most features found in other insects, including the sutures and sclerites. Because some insects, even ones from separate orders, can look almost exactly alike. Recent classification of orders of insects compiled by gary parsons presented at seminar to entomology department 12 october 2015. Just look at the picture and enter in the correct name. Insect orders introduction the class hexapoda is generally studied under a classi cation system with approximately 30 orders. The most primitive insects, such as springtails, silverfish, and firebrats, undergo little or no true metamorphosis over the course of their life cycles.
Coleoptera, diptera, hymenoptera, lepidoptera, neuroptera. Insect taxonomy is the study of the classification of insects. Key to the orders of insects the apterygota protura collembola springtails thysanura silverfish diplura two pronged bristletails. Insects literacy for anywhere leveled readers for the developing world and beyond. Common true bugs and related insects orders hemiptera and. Coleoptera is the largest order of insects, including about 14 of all known insects with about 280,000 di erent species in the world. The key that follows will help you determine many of the more commonly encountered orders of insects. Introduction to the identification of insects and related. Insects have been around for at least 350 million years over 900,000 described species u. In an order, there are classes, orders, suborders, families and genera, which constitute the living things that procreate with one another.
September 22, 2014 in addition to being a scientist, entomology professor, and editorinchief of american entomologist, gene kritsky is also an art enthusiast and a scholar of insects in literature and the arts. Without the activities of insects, human life on earth would eventually be extinguished. When you want to identify an insect the first step is to find out in which order it is classified. Remember that the more details you can offer, the better your chances of finding a match. Each of the insect orders are listed below and, by following the links, information on each order is provided main characteristics, life cycle and other interesting facts along with links to other web sites containing further information. The global challenge is to secure high and quality yields and to make agricultural production environmentally compatible. There are approximately 30 orders in the class insecta part of the phylum arthropoda, but only five were used in. Here, the vertex, or the apex dorsal region, is situated between the compound eyes for insects with a hypognathous and opisthognathous head.
What is the class insecta and what traits does it possess. Insects explained a basic guide to insect morphology and identification. Many of these are of minor importance and are studied only from the standpoint of scienti c interest. Females typically have a special ovipositor for inserting eggs into hosts or places that are otherwise inaccessible. Remember immature insects and adult insects are often very different. This activity familiarizes students with the six most populous orders of insects by producing minibooks with the name of each order on a separate page, examples of common insects in that order, a picture, identifying characteristics, and an interesting fact. Describe the characteristics that distinguish the principal families and orders of insects. Entomologists refer to these insects as ametabolous, from the greek for having no metamorphosis. Insects have segmented bodies, jointed legs, and external skeletons exoskeletons. Shipley and others published the orders of insects find, read and cite all the research you need on.
The key is in two parts, one for insects with wings, and one for those without. Taxonomy is the day today practice dealing with organism kinds, handling and identification of specimen, publication of. Individual orders can have insects in one or many feeding guilds. Hymenoptera is a large order of insects, comprising the sawflies, wasps, bees, and ants. Bugfinder allows for a quick search of the insect identification database by selecting primary color, secondary color, number of legs and the territory state in question. If only one color is present on your insect, select it again as its secondary color. Many of these are of minor importance and are studied only from the standpoint of scientific interest.
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