Body relatively flat, tapered and often covered with scales. Clasification of insects ppt insects hexapoda free. Clasification of insects ppt free download as powerpoint presentation. This order is the smallest of all the insect orders, with perhaps only 25 known species living today. A pair of simosyrphus grandicornis hoverflies mating in flight. In an order, there are classes, orders, suborders, families and genera, which constitute the living things that procreate with one another. Insect, class insecta or hexapoda, any member of the largest class of the phylum arthropoda, which is itself the largest of the animal phyla. There are more species of insects than there are species of all other animals combined. Insect groups orders amateur entomologists society aes. In head a pair of antenna and a pair of compound eyes are usually present. Thysanura silverfish firebrats bristle tail greek thysano meaning fringed ura meaning tail.
They are the most successful animals inhabiting every conceivable ecological condition. Insect orders about 28 different orders of insects. Species in each order share unique characteristics that set them apart from other insects, yet have the same traits that all insects share. In fact, there are so many insects that no one knows quite how to count them all the. Anatomy the three main parts of the body are the head, thorax, and adbomen. Here is an alphabetical list of insect orders in current usage with examples of insects types. There are over thirty identified orders within the class insecta. Class insecta order hymenoptera family apidae genus apis.
Class insecta of phylum arthropoda has undergone and continues to undergo changes in its classification. There are more than one million living species in the world and many more yet to be discovered. Head has one pair of antennae thorax middle bit has three pairs of legs. Insects insecta are the most diverse of all animal groups. Episyrphus only a subset of the hoverflies species. Class insecta contains all insects and belong to the phylum arthropoda. 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. A number of insect orders are infrequently collected in freshwater habitats and have relatively low richness of aquatic species. Montana field guide contains a wealth of information about montanas diverse species.
Factors for insects abundance classification of phylum arthropoda upto classes. Classification of class insecta upto orders insect is a. Many taxonomists scientists who classify and name organisms disagree on the number of orders and. This binomial nomenclature allows there to be a two. Many taxonomists scientists who classify and name organisms disagree on the number of.
Brain is divided into protocerebrum, deutocerebrum and tritocerebrum. Phylum arthropoda, subphylum mandibulata, class insecta. Abdomen contains the breathing organs, heart, digestive system and sexual organs. Free how to download pdf book full guide agriculture at a glance book outlines of insect morphology and systematics history of entomology in india. More than 1 million of the categorized 2 million species are arthropods.
Many of these orders are of minor importance and are studied only because of scientific interest. Taxonomy and classification of insects academicscope. Adelges tsugae annand 1928, hemlock woolly adelgid. 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. Most of the orders represented then were already winged and, from their diversity, it seems certain that the power of flight had. Class insecta insects are the largest group of animals, which constitute 75% of all living animals. 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. Endopterygota 9 orders general characteristics of class arachnida 1. The class insecta is generally divided into about 30 orders. Insects have a chitinous exoskeleton, a threepart body head, thorax and abdomen, three pairs of jointed legs, compound.
Sometimes referred to as living fossils, the insects of the order grylloblatodea have changed little from their ancient ancestors. Insects are small arthropods with six legs and usually one or two. The 29 insect orders are numbered in an approximate series of evolutionary complexity with the. 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. Terminology, classification and use of scientific names. Body is divided into three parts, head, thorax and abdomen the distinguishing feature of insects. Insect morphology and systematics pdf book agrimoon. It is the most diverse group of organisms on earth. From this hierarchy we derive the scientific name for the marmalade hoverfly episyrphus balteatus. Insect scientists entomologists categorize groups of living entities as how they are related through the theory of evolution.
Insects class insecta have segmented bodies, jointed legs, and external skeletons. Arthropoda classes crustacea crayfish, sowbugs 2 body segments and 5 pairs of legs arachnida. Insects are distinguished from other arthropods by their body, which is divided into three major regions. Classification of insects zoology for ias, ifos and. Insect orders introduction the class hexapoda is generally studied under a classi cation system with approximately 30 orders. Many of these are of minor importance and are studied only from the standpoint of scienti c interest. Because there are so many different kinds of insects 1 million and counting, they are divided up into over 30 different orders. Order zygentoma old thysanura silverfish, firebrats. Kingdom animalia, phylum arthropoda, and order insecta. Insects are a class in the phylum arthropoda, so they have all of the characteristics of the arthropods. More than 1 million of the categorized 2 million species are arthropods insects spiders.
You are probably familiar with many common insect orders already. As you may have learned in science or biology class, an order is a group of related animals. Considered here are some of the most important or common orders likely to be encountered. Many of these are of minor importance and are studied only from the standpoint of.
A typical adult arachnid has two distinct body regions. The insects class insecta are divided into a number of orders. Aedes aegypti, a parasite, is the vector of dengue fever and yellow fever. All mammals, for example, belong to the order mammalia.
Construct comb of wax bees wax hexagonal chambers contain either growing larvae or honey storage regurgitated nectar 3. The class insecta from which we here exclude the entognathous hexapods, the collembola, protura and diplura is known with certainty in fossil form only from the upper carboniferous onwards, about 300 million years. They were the first flying creatures and still the only invertebrates that can fly. 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.
Classification of class insecta upto orders phylum. Taxonomy is the day today practice dealing with organism kinds, handling and identification of specimen, publication of data, study of literature and analysis of. Romalea microptera beauvois, eastern lubber grasshopper schistocerca americana drury, american grasshopper schistocerca ceratiola hubbell and walker, rosemary grasshopper. Before one understands what social insects are it is first important to understand what an. As you may have learned in science or biology class, an order is a group of. Class insecta orders with examples biology education. Recent classification of orders of insects keywords. Learn more about insects, both their similarities and their differences. Classification of class insecta upto orders insect is a six legged arthropod. Insects have segmented bodies, jointed legs, and external skeletons exoskeletons. Considered here are some of the most important orders likely to be encountered. As used here, the term insecta is synonymous with ectognatha.
Some new classifications and new insect orders in current literature, but it is a good general reference. Many orders wont be encountered or noticed because of their size, habitat, or life cycle. Many of these orders are of minor importance and are studied only because of scienti. Class insecta insects head of a wasp with three ocelli centre, and compound eyes at the left and right. Considered here are some of the more important orders which are likely to be encountered. The class insecta the insects being such a large class of organisms their taxonomy and hence their classification can, and in fact does, get extremely complicated, with a large number of people discussing the merits of various taxonomic schemes. The class insecta can be further divided into 2932 orders depending upon the classification system used. Classification of insects royal entomological society. Many of the divisions between the orders occurred over 230 million.
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