Usually one pair of antennae and a pair of compound eyes (a few exceptions to these characteristics are found) 1.4. General characters of class insecta • These are tracheated arthropods • It possesses 3 pairs of jointed legs • Body is segmented • Insect body is divided into 3 regions • Head • Thorax • Abdomen • It possesses a pair of compound eyes & antennae • Two pair of … General characteristics of Insects (class):- Insects are the most successful life form on the planet: they make up more than half of all living things on Earth- Some experts suggest that there are more than 10 million insects- Divided into 29 orders Class Insecta Characteristics: What kind of skeleton do they have? Choose from 349 different sets of class insecta flashcards on Quizlet. From the minuscule pesky flea to the majestic monarch butterfly, there are … Habitat: Some live on land and some can even live on top of the water. 5. Enter your e-mail address. These appendages are all jointed and usually elongate. The Class Insecta, or the slightly larger Superclass Hexapoda (which additionally includes the orders Collembola, Protura and Diplura), is the world's most species-rich group of organisms, with about 1 million described species. Insects (Insecta) are the most diverse of all animal groups.There are more species of insects than there are species of all other animals combined. Super-phylum: Ecdysosoa The insects take in air using tracheae which are a system of tubes placed throughout the body. Exoskeleton is covered with sensory organs such as compound eye. In majority of them larval stage is different from the adult and there is a distinct metamorphosis. 3 pairs of legs b. 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 exhibit organ system level of organization. Ø A large taxa, includes insects and a small group of wingless arthropods Ø Body plan: 3 parts, head, thorax and abdomen Ø Head with six segments Ø Thorax with three pairs of jointed legs (hence the name hexapoda) THE CLASS INSECTA. Basic Features: Insects are a class in the Phylum Arthropoda, so they have all of the characteristics of the Arthropods. Insects have some distinctive characteristics that set them apart from other arthropods. Characteristics a. It would be hard to get through the day without a close encounter with a six-legged species. The arthropoda characteristics are mentioned below: The body is triploblastic, segmented, and bilaterally symmetrical. Modern insects are highly adapted to an immense range of habitats throughout the world, from deserts to snowfields, from rainforest to savannah. In fact, there are so many insects that no one knows quite how to count them all — … These are tracheated arthropods. Insects are the only arthropods with wings. •Front wings (elytra) are hard and serve as covers for the hind wings; meet in a line down the middle of the back. Usually two pairs of wings (absent in many insects such as lice, fleas, ants; flies have one pair of wings) Ø Class Insecta includes more than half of the all known living species Ø Usually terrestrial, some are aquatic Ø Usually absent in marine environments Ø * Mouth … Johnston's organ in pedicel (second segment) of antenna. SHOW MORE a The insect tagmata consist of the cephalothorax and abdomen. In fact, most animal species are insects. For each of the following characteristics, indicate whether the trait is common to Phylum Arthropoda or specific to certain classes of arthropods: wings, chewing mouthparts, jointed Kingdom: Animalia Class - Insecta. Insects are small animals which have the body divided into three regions, the head, thorax and abdomen. Insects are many times thought to be bad for plants and animals. Insects can experience pigment changes from eating certain foods or in some cases they can be manufactured by the insect. the world. A body divided into three parts (head, thorax and abdomen) 1.2. Insects can live on land, in the water or both and are cold-blooded creatures that require the sun to warm them. In North America alone, there are about 8,000 arachnid species. Thorax (middle bit) has three pairs of legs. Characteristics of Insect Class Insecta 1. For example, a flowers success depends on the pollenation by bees. Have outer covering known as exoskeleton. In head a pair of antenna and a pair of compound eyes are usually present. 2 pairs of wings (most) except flies (1 pair of wings - Diptera) B. All insects have four pairs of appendages, one pair on the head and three pairs on the thorax. There are more species of insects than species of all other classes of animals combined. Sub-kingdom: Eumetazoa The ability to fly has played an important role in their spectacular radiation on land. Class Insecta is the most diverse class of arthropods due to their short life spans, rapid reproduction, increased variation, and the potential for new adaptations. Insects have segmented … ... Insects show a remarkable variety of morphological characteristics, but they are much more homogeneous in tagmatization than are Crustacea. Scientists describe more than 100,000 species of arachnids. Subphylum UNIRAMIA: Insects, Centipedes, Millipedes. Body is divided into three regions 2. Short life cycle, numerous egg laying periods. Class Insecta: Introduction. Insects are a class in the Phylum Arthropoda, so they have all of the characteristics of the Arthropods. Insect scientists (Entomologists) categorize groups of living entities as how they are related through the Theory of Evolution. Three pairs of legs 1.3. 471 People Used Ø  Characters explained for sub-phylum Hexapoa is common for classes of Insecta. They are found on land, in the air, and in the sea. Insects form the larger part of the land animals in They are largely terrestrial and solitary Animal, gathering only for mating. Insects have ability to fly and can still use legs effectively. Blattodea Cockroaches 2. It is of the importance in temperate countries, but is of considerable economic importance in tropical and sub-tropical parts of the world. The earth is literally crawling and buzzing with insects, otherwise known as members of the class insecta. Class Insecta - The insects A Introduction 1. Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.Definitions and circumscriptions vary; usually, insects comprise a class within the Arthropoda. Class Insecta characteristics 3 pairs of legs, segmented, antennae Subclass Pterygota winged insects 2 Divisions in Insecta? The phylum Arthropoda is the most diverse of all the animal phyla, and the class Insecta is the most diverse group of arthropods. Phylum: Arthropoda The name Arachnida is derived from the Greek aráchnē with ties to a myth.In Greek mythology, Aráchnē was a woman who was turned into a … Insects that experience this sort of complete change are called "holometabolous." Body is divided into three parts, head, thorax and abdomen - the distinguishing feature of insects: Head has one pair of antennae. Other species undergo a more gradual process, in which the newly hatched young are more similar to the adult but are small in size, lack wings, are sexually immature, and may differ in other, relatively minor ways as well. Coleoptera Beetles 3. Endopterygota; Exopterygota Division Endopterygota internally developed wings; fleas and flies +5 more terms 1.1. With so many catalogued insects in the world, it only makes sense for researchers to develop a contained system of orders. All Arachnids have multiple legs and look like Insects, the only difference is that Insects have six leg and Arachnids have 8 legs. 2. Class Insecta of Phylum Arthropoda has undergone and continues to undergo changes in its classification. The class Arachnida includes a diverse group of arthropods: spiders, scorpions, ticks, mites, harvestmen, and their cousins. These include (Kristensen, 1991): lack of musculature beyond the first segment of antenna. b The cuticle of each body segment is made of four plates, sclerites connected to each other by a flexible hinge joint c The heads of insects usually have a pair of large compound eyes, a pair of ocelli (simple eyes), and a pair of antennae. The number of insect species outnumbers all other terrestrial animals and plants together. In the class Insecta, only 9 out of 28 orders undergo complete metamorphosis, yet these 9 orders represent about 86% of all insect species alive today. Sub-phylum: Hexapoda An adult insect (imago) eventually emerges from within the pupal exoskeleton bearing little or no resemblance to its larval form. Difference between Centipedes and Millipedes. Here is an alphabetical list of insect orders in current usage with examples of insects types: 1. Most adult insects have the following characteristics: 1. Coleoptera (beetles and weevils) is the largest order in the class Insecta. Reproductive capacity is enormous and larval stages grow by molting (ecdysis). Its primary function is dispersal and reproduction. Arachnids are a Class (Arachnida) of joint-legged Invertebrate Animals in the subphylum Chelicerata. However, the members of this phylum, despite their incredible diversity and sheer numbers, share a number of important distinguishing characteristics. Class Insecta Insecta (L. insectus, cut into) are the most diverse and abundant of all groups of arthropods. All habitats except saltwater - replaced by crustacea there a. Freshwater b. Terrestrial c. … Most Distribution 1. The body is divided into head, thorax, and abdomen. Phylum Arthropoda, Class Insecta The focus is a typical insect, showing all the characteristics of the class. •Hind wings large, membranous, folded beneath the elytra. 3 main tagmata. The number of described insects is around 700,000 species and an estimate of the known and unknown species together is around 10,000,000. Class Insecta is divided into two subclasses, namely, Apterygota and Pterygota. An insect's body has three major body parts, including a head, thorax and abdomen. Although the insects numerically dominate the land as a group their predominance fades in the aquatic environment. Body is divided into three parts, head, thorax and abdomen - the distinguishing feature of insects: Head has one pair of antennae. Praying Mantis Lady Bug Metallic Ceiba Bug Organisms: Monarch Butterfly What are two examples of insecta? Class 1 : Insecta. •Chewing mouthparts (sometimes located at the tip of a beak). Arthropods, members of the phylum Arthropoda, are a diverse group of animals including insects, crustaceans, spiders, scorpions and centipedes. Insects are so prolific that added together they outnumber all other life forms combined. Because they lack backbones, they are invertebrates. In many cases this can be true however many species can be beneficial. And the diversity is astounding. Characteristics. Insects have a hard protective covering called an exoskeleton. 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. Very species rich 2. Characters of class Insecta 1. Thorax (middle bit) has three pairs of … Learn class insecta with free interactive flashcards. Insects have a large number of unique, derived characteristics, although none of these are externally obvious in most species. The additional characters includes: Ø  largest taxa of all animals and plants, Ø  Includes more than one million described species, Ø  Class Insecta includes more than half of the all known living species, Ø  * Mouth parts are ectognathous (=mouth parts expoed), Ø  * Characteristically possess wings for flight, Ø  Wings are on the second and third thoracic segment, (* Characters with separate class insect from Enthognatha, the second class of sub-phylum Hexapoda), @. Muliticellular or unicellular?
2020 class insecta characteristics