Only 1 % cause damage frequently enough to be considered pests. Classification insects orders illustrated 36th exploring nature. To do that, youll need to learn to recognize some of the characteristics that. You are probably familiar with many common insect orders already. Head has one pair of antennae thorax middle bit has three pairs of legs. Rostrum arises from front of head prognathous large, sclerotized gular region pentatomidae. Ppt insect classification powerpoint presentation free. Class insecta of phylum arthropoda has undergone and continues to undergo changes in its classification. These are grouped together into two subclasses called the apterygota wingless insects and the pterygota winged insects for further information on classes, orders and subclasses see the classification section. Insects are a class in the phylum arthropoda, so they have all of the characteristics of the arthropods. Introduction to the identification of insects and related arthropods 2003 p. Some of the most commonly used metagenomic classification methods do not provide a measure of confidence for the taxonomic assignments. Protura proturans collembola springtails diplura diplurans thysanura bristletails, silver. In addition to the class insecta there are three other classes of invertebrates that have six legs, these.
Rapid and accurate taxonomic classification of insect class insecta. The class entognatha is divided into 3 orders protura, collembola, and diplura. More than 1 million of the categorized 2 million species are arthropods. E, p a chewing mouthparts concealed in head antennae variable. The phylogeny of the different orders of insects has been disputed for the last two hundred years and numerous attempts have been made to recreate the relationships and divergences that have occurred since the insects arose in the devonian era. Some images used in this set are licensed under the creative commons through. Class insecta insects are the largest group of animals, which constitute 75% of all living animals. Class trilobita ancient trilobites class crustacea shrimp, crayfish, crabs, rolly polly potatoe bugs class diplopoda millipedes class chilopoda centipedes 12 class insecta insects the class insecta can be broken down into over 27 different order groups of classification.
Many of these are of minor importance and are studied only from the standpoint of scienti c interest. Classification of class insecta upto orders insect is a six legged arthropod. Class insecta contains all insects and belong to the phylum arthropoda. Insect groups orders amateur entomologists society aes. In addition to the class insecta there are three other classes of invertebrates that have six legs, these three classes are known as noninsect hexapods. Romalea microptera beauvois, eastern lubber grasshopper schistocerca americana drury, american grasshopper schistocerca ceratiola hubbell and walker, rosemary grasshopper. Introduction to the identification of insects and related. Below are some of the characteristics that are common to the class insecta. There are more than one million living species in the world and many more yet to be discovered. Three pairs of jointed legs 6 legs compound eyes which contain several thousand lenses leading to a larger field of vision two antenna one of the most diverse group of animals on earth. Abdomen contains the breathing organs, heart, digestive system.
Anatomy the three main parts of the body are the head, thorax, and adbomen. 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. 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. Part i classes of arthropoda, orders of insecta 3 abdomen. Insect orders introduction the class hexapoda is generally studied under a classi cation system with approximately 30 orders. In an order, there are classes, orders, suborders, families and genera, which constitute the living things that procreate with one another. Insects have segmented bodies, jointed legs, and external skeletons exoskeletons.
Body is divided into three parts, head, thorax and abdomen the distinguishing feature of insects. Thysanura silverfish firebrats bristle tail greek thysano meaning fringed ura meaning tail. Current methods to identify unknown insect class insecta cytochrome c oxidase coi barcode sequences often rely. Terminology, classification and use of scientific names.
Arthropoda classes crustacea crayfish, sowbugs 2 body segments and 5 pairs of legs arachnida. In this lab, youll get an overview of some of that diversity by learning to identify a few orders of insects. In fact, there are so many insects that no one knows quite how to count them all. When citing a website the general format is as follows. A number of insect orders are infrequently collected in freshwater habitats and have relatively low richness of aquatic species. Before one understands what social insects are it is first important to understand what an.
Classification of class insecta upto orders phylum. They were the first flying creatures and still the only invertebrates that can fly. They are the most successful animals inhabiting every conceivable ecological condition. Many of the divisions between the orders occurred over 230 million. At the museum, explore the nature gardens, and have students observe draw and identify insects to order using the insect. Click to see the original works with their full license.
Insect, class insecta or hexapoda, any member of the largest class of the phylum arthropoda, which is itself the largest of the animal phyla. Here, the vertex, or the apex dorsal region, is situated between the compound eyes for insects with a hypognathous and opisthognathous head. Order zygentoma old thysanura silverfish, firebrats. Insects are distinguished from other arthropods by their body, which is divided into three major regions. All mammals, for example, belong to the order mammalia. There are more species of insects than there are species of all other animals combined. Their numbers are nothing short of remarkable both in terms of how many individual insects there are, as well as how many species of insects there are. All habitats except saltwater replaced by crustacea there a. As you may have learned in science or biology class. Class insecta order hymenoptera family apidae genus apis. Class insecta orders with examples biology education. Considered here are some of the more important orders.
Of all the insect orders, orthoptera displays the most features found in other insects, including the sutures and sclerites. Insect injury 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. In head a pair of antenna and a pair of compound eyes are usually present. As you may have learned in science or biology class, an order is a group of related animals. Current methods to identify unknown insect class insecta cytochrome c oxidase coi barcode sequences often rely on thresholds of distances that can be difficult to define, sequence similarity cutoffs, or monophyly. Most insects are very small compared to birds, mammals, reptiles and fish. Recent classification of orders of insects keywords. What is the class insecta and what traits does it possess.
All of the orders but thysanoptera showed a strong attraction towards the black light wavelength of. The 8 major orders of the class insecta and characteristics thereof. The class hexapoda is generally studied under a classi cation system with approximately 30 orders. The insects class insecta are divided into a number of orders. The questions in this quiz and worksheet will address these questions, helping you. Some new classifications and new insect orders in current literature, but it is a good general reference. Insects are small arthropods with six legs and usually one or two. Differential attraction of insect orders to different wavelengths of light christopher m. As you move from class to order to family and perhaps to genus and species you will notice. Classification of insects zoology for ias, ifos and. Primarily winglessevolved from wingless ancestors winged or secondarily wingless evolved from winged ancestors. These are grouped together into two subclasses called the apterygota wingless insects and the pterygota. More than 1 million of the categorized 2 million species are arthropods insects spiders. Over one million species identified, thousands more exist.
Considered here are some of the more important orders which are likely to be encountered. For your 4h entomology collection, you need to know to which order each of your insects belongs. Use the exploring class insecta graphic organizer to familiarize students with some common orders of insects. Many orders wont be encountered or noticed because of their size, habitat, or life cycle.
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. Insects range in length from about l100th of an inch. Insects insecta are the most diverse of all animal groups. Differential attraction of insect orders to different. Here is an alphabetical list of insect orders in current usage with examples of insects types. Adelges tsugae annand 1928, hemlock woolly adelgid. Data and apps idaho fish and wildlife information system bringing information to bear on the management and conservation of fish, wildlife, and plants in idaho. Classification insects orders illustrated grade 36. It is the most diverse group of organisms on earth. Body relatively flat, tapered and often covered with scales. Home insects insect fact files insect groups orders. There are approximately 30 orders in the class insecta part of the phylum arthropoda, but only five were used in. Because there are so many different kinds of insects 1 million and counting, they are divided up into over 30 different orders.