insectheadantenna.pdf
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The insect head is composed of sclerites that form the cranium. There are three main types of insect heads - hypognathous, prognathous, and opisthognathous - which differ in the orientation of the mouthparts. Antennae are jointed sensory appendages found in pairs on the insect head. They can have various shapes including filiform, capitate, clavate, geniculate, moniliform, pectinate, serrate, aristate, plumose, lamellate, and flabellate. The basic segments of antennae are the scape, pedicel, and multiple flagellomeres.
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insect head.pptx
This document discusses the anatomy and structures of the insect head and appendages. It begins by describing how the insect body is segmented and then grouped into three main tagmata: the head, thorax, and abdomen. It then focuses on the structures and segmentation of the insect head, including the sclerites, sutures, mouthparts, and types of heads based on mouthpart positioning. The document also discusses the antennae and its various modifications, as well as the structures and modifications of the legs between different insect orders.
INSECT ANTENNA Its origin, structure, function and modification in different ...
The document discusses insect antennae, including their origin, structure, function, and modifications across insect orders. It notes that antennae originate from the head and are composed of three parts: the scape, pedicel, and flagellum. The main function of antennae is sensory, detecting smell, taste, sound, touch, and more. Antennae are modified in different orders for these sensory functions and can take forms like filiform, moniliform, pectinate, and geniculate. Examples of antenna modifications are provided for many insect orders.
structural organisation of insect body
The document summarizes the structure and segmentation of the insect body. It is divided into three main parts:
1. The head, which is formed from the fusion of seven segments and contains the mouthparts, eyes, and antennae.
2. The thorax, which is composed of three segments - prothorax, mesothorax, and metathorax. Each segment contains a dorsal notum, lateral pleuron, and ventral sternum. The mesothorax and metathorax make up the pterothorax which bears the wings.
3. The abdomen, consisting of 9-11 segments. Each segment contains a dorsal tergum and ventral sternum
Insect head:- it’s origin, structure, function and modification in different ...
The insect head is composed of six segments that fuse during development. It bears sensory organs like antennae and eyes as well as feeding appendages. The head capsule hardens and its segmentation is not evident in adults. It has various sutures that delineate different regions and contain internal ridges. The tentorium forms an endoskeleton structure that supports the head. The positioning of the mouthparts varies between hypognathous, prognathous, and opisthognathous heads in different insect groups.
entomology 4.pptx
Insect morphology, Tagmosis, Types of head, Thorax, Abdomen, Sexual dimorphism, Antennae, function and types.
Insect antennae
The document discusses the structure and functions of insect antennae. It notes that antennae are borne on the second head segment and function primarily for sensory perception. The main parts of antennae are the scape, pedicel, and flagellum. Antennae allow insects to detect smells, sounds, humidity, mates, food, and danger. Their shape varies between insect orders and can be filiform, setaceous, moniliform, capitate, clavate, lamellate, serrate, pectinate, geniculate, bipectinate, aristate, or stylate depending on the insect. Antennae play important sensory roles in insect behavior and communication.
insect antenne-.pdf
The document discusses the structure and functions of insect antennae. It notes that antennae are borne from the second head segment and function primarily for sensory perception. The main parts of antennae are the scape, pedicel, and flagellum. Antennae allow insects to detect smells, sounds, humidity, mates, food, and danger. Their shape varies between insect orders and can be filiform, setaceous, moniliform, capitate, clavate, lamellate, serrate, pectinate, geniculate, bipectinate, aristate, or stylate depending on the insect. Antennae play important sensory roles in insect behavior and survival.
Character of insecta
This document discusses the classification of insects. It divides the class Insecta into two subclasses: Apterygota and Pterygota. Apterygota includes primarily wingless insects with no metamorphosis. Pterygota is further divided into Exopterygota and Endopterygota. Exopterygota undergo incomplete metamorphosis and include orders like mayflies, dragonflies, and grasshoppers. Endopterygota undergo complete metamorphosis through distinct larval, pupal and adult stages, and include orders such as butterflies, flies, beetles and ants. Examples are provided for most orders.
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insect head.pptx
This document discusses the anatomy and structures of the insect head and appendages. It begins by describing how the insect body is segmented and then grouped into three main tagmata: the head, thorax, and abdomen. It then focuses on the structures and segmentation of the insect head, including the sclerites, sutures, mouthparts, and types of heads based on mouthpart positioning. The document also discusses the antennae and its various modifications, as well as the structures and modifications of the legs between different insect orders.
INSECT ANTENNA Its origin, structure, function and modification in different ...
The document discusses insect antennae, including their origin, structure, function, and modifications across insect orders. It notes that antennae originate from the head and are composed of three parts: the scape, pedicel, and flagellum. The main function of antennae is sensory, detecting smell, taste, sound, touch, and more. Antennae are modified in different orders for these sensory functions and can take forms like filiform, moniliform, pectinate, and geniculate. Examples of antenna modifications are provided for many insect orders.
structural organisation of insect body
The document summarizes the structure and segmentation of the insect body. It is divided into three main parts:
1. The head, which is formed from the fusion of seven segments and contains the mouthparts, eyes, and antennae.
2. The thorax, which is composed of three segments - prothorax, mesothorax, and metathorax. Each segment contains a dorsal notum, lateral pleuron, and ventral sternum. The mesothorax and metathorax make up the pterothorax which bears the wings.
3. The abdomen, consisting of 9-11 segments. Each segment contains a dorsal tergum and ventral sternum
Insect head:- it’s origin, structure, function and modification in different ...
The insect head is composed of six segments that fuse during development. It bears sensory organs like antennae and eyes as well as feeding appendages. The head capsule hardens and its segmentation is not evident in adults. It has various sutures that delineate different regions and contain internal ridges. The tentorium forms an endoskeleton structure that supports the head. The positioning of the mouthparts varies between hypognathous, prognathous, and opisthognathous heads in different insect groups.
entomology 4.pptx
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The document discusses the structure and functions of insect antennae. It notes that antennae are borne on the second head segment and function primarily for sensory perception. The main parts of antennae are the scape, pedicel, and flagellum. Antennae allow insects to detect smells, sounds, humidity, mates, food, and danger. Their shape varies between insect orders and can be filiform, setaceous, moniliform, capitate, clavate, lamellate, serrate, pectinate, geniculate, bipectinate, aristate, or stylate depending on the insect. Antennae play important sensory roles in insect behavior and communication.
insect antenne-.pdf
The document discusses the structure and functions of insect antennae. It notes that antennae are borne from the second head segment and function primarily for sensory perception. The main parts of antennae are the scape, pedicel, and flagellum. Antennae allow insects to detect smells, sounds, humidity, mates, food, and danger. Their shape varies between insect orders and can be filiform, setaceous, moniliform, capitate, clavate, lamellate, serrate, pectinate, geniculate, bipectinate, aristate, or stylate depending on the insect. Antennae play important sensory roles in insect behavior and survival.
Character of insecta
This document discusses the classification of insects. It divides the class Insecta into two subclasses: Apterygota and Pterygota. Apterygota includes primarily wingless insects with no metamorphosis. Pterygota is further divided into Exopterygota and Endopterygota. Exopterygota undergo incomplete metamorphosis and include orders like mayflies, dragonflies, and grasshoppers. Endopterygota undergo complete metamorphosis through distinct larval, pupal and adult stages, and include orders such as butterflies, flies, beetles and ants. Examples are provided for most orders.
Lec. 6 Body segmentation Structure of head & its types.ppt
The insect head contains compound eyes, simple eyes, mouthparts, and antennae. It is formed by the fusion of six segments and can be divided into two regions: the procephalon and gnathocephalon. The head is attached to the thorax by the neck/cervix region. There are three basic head orientations in insects: hypognathous heads have mouthparts directed downward, prognathous heads have mouthparts directed forward as seen in carnivores, and ophisthognathous heads have an elongated proboscis sloping backwards.
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The document summarizes the segmentation and structure of the insect body. It is divided into three main sections - the head, thorax, and abdomen. The head is made up of 6 fused segments and contains the mouthparts, eyes, and antennae. The thorax contains 3 segments with pairs of legs and optionally wings. The abdomen contains 11 segments with genital appendages on segments 8 and 9. The head can be hypognathous, prognathous, or opisthognathous depending on the orientation of the mouthparts. It is made up of sclerites like the clypeus, frons, and epicranium joined by sutures.
Head
This document summarizes the key structures and features of insect heads and mouthparts. It notes that the insect head contains sensory organs, feeding appendages, and a major neuroendocrine center. The main mouthpart types are mandibulate (chewing), haustellate (piercing and sucking), and sponging. Mandibles and maxillae are used for chewing food, while haustellate mouthparts contain stylets for piercing tissues and sucking fluids. Antennae are segmented sensory organs located on the head that come in various shapes and serve to detect odors, sounds and other stimuli.
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The document summarizes the main body regions and structures of an insect's head. It discusses that the insect body is divided into three main regions: the head, thorax, and abdomen. The head contains important sensory structures like antennae, compound eyes, and specialized mouthparts. It also houses the brain. The hard outer covering of the head is called the head capsule or cranium. The head is formed of sclerites that fuse together during molting to form its specific shape.
INSECT ANTENNAE.pptx
Antennae are paired appendages on the head of insects that serve important sensory functions. They are multi-segmented and composed of three parts: the scape, pedicel, and flagellum. Antennae function as organs of smell, taste, hearing, and sexual recognition in different insect species. Their structure varies between species and can take forms like setaceous, filiform, moniliform, pectinate, and others. Antennae help insects identify food, mates, and detect threats through specialized sensory structures adapted to their environment and behaviors.
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The thorax is the middle body region of insects and contains three segments - the prothorax, mesothorax, and metathorax. Each segment contains a pair of legs and, in many adult insects, one or two pairs of wings. The thorax houses muscles that power the legs and wings. It is composed of rigid exoskeleton plates on the dorsal, ventral, and lateral sides of each segment. The thorax contains three pairs of legs and, in most adult insects, one or two pairs of wings that are adapted for functions like flight, protection, and sensory roles.
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ANTENNAE.pptx
The document discusses the different types of antennae found in insects. It begins by providing background on antennae, noting that they are sensory organs located on the head of most arthropods. It then describes 13 main types of insect antennae based on their shape, including filiform, ensiform, setaceous, moniliform, capitate, clavate, serrate, lamellate, flabellate, pectinate, bi-pectinate, plumose, and geniculate antennae. Each type is defined and examples are given of insect orders that possess that antenna type. The document aims to provide classification and identification of antennae among insects.
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This document summarizes the key structures and features of insect heads and mouthparts. It notes that the insect head contains sensory organs, feeding appendages, and a major neuroendocrine center. The main mouthpart types are mandibulate (chewing), haustellate (piercing and sucking), and sponging. Mandibles and maxillae are used for chewing food, while haustellate mouthparts contain stylets for piercing tissues and sucking fluids. Antennae are segmented sensory organs located on the head that come in various shapes and serve to detect odors, sounds and other stimuli.
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The insect head contains openings for the mouthparts and prothorax. Mouthparts can be hypognathous, prognathous, or opisthognathous depending on the orientation of the head. The head also contains compound eyes, ocelli, and segmented antennae. There are six fused segments that make up the mouthparts: preantennal, antennal, labral, mandibular, maxillary, and labial. Mouthpart structure varies between insects and can be mandibulate, lapping/chewing, siphoning, sponging, or piercing-sucking depending on the insect's feeding habits. Antennae serve sensory functions and come in various shapes
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Sensory Organs comparative study in vertebrates.
This document discusses sensory organs in higher vertebrates. It describes the five main senses - sight, smell, taste, touch, and hearing - and the sensory organs associated with each. For each sense, it outlines the sensory receptors and provides examples in different vertebrate groups including fish, amphibians, reptiles, birds, and mammals. It also discusses the brain structures involved in sensory perception for each vertebrate group, noting that mammals generally have larger, more complex brains compared to other groups.
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3) Pupae can be decticous or adecticous based on presence of mandibles, and exarate, obtect, coarctate or enclosed in a cocoon based on freedom of appendages.
typeoflarvaeandpupaininsect-.pdf
This document discusses the different life stages of insects: eggs, larvae, and pupae. It describes the various types of eggs insects lay, such as sculptured, rounded, floating, pedicellate, ootheca, egg rafts, and egg pods. The document outlines the three main types of larvae - oligopod, polypod, and apodous - and provides subtypes. It also discusses the three types of pupae - obtect, exarate, and coarctate - and gives examples for each. The document emphasizes that the pupal stage lacks mobility so pupae have protective cocoons made of different materials.
External Morphology of Red Cotton Bug.pptx
Mole crickets belong to the family Gryllotalpidae in the order Orthoptera. They have cylindrical brown bodies around 3 to 5 cm long. They have chewing mouthparts oriented below the head and long antennae and proboscis. Their eyes are compound and their legs are adapted for digging with the front legs and running with the back legs. Their forewings are thickened tegmina while their hindwings are membranous. They have cerci on their abdomen.
Parasitoids & Predators.ppt
This document discusses the role of parasitoids and predators in arthropod pest management. It covers definitions and concepts of biological control strategies including classical biological control, augmentation, and conservation. Classical biological control involves importing natural enemies from other regions to control exotic pests. Augmentation aims to increase natural enemy populations through periodic releases. Conservation modifies pesticide use and farming practices to preserve existing natural enemies. The document provides examples of successful classical biological control projects and challenges with mass rearing natural enemies for augmentation.
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What is greenhouse gasses and how many gasses are there to affect the Earth.
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Nucleophilic addition is the most important reaction of carbonyls. Not just aldehydes and ketones, but also carboxylic acid derivatives in general.
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Exposé invité Journées Nationales du GDR GPL 2024
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Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
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insectheadantenna.pdf
- 1. Structure and Modifications of Insect head and antenna Prepared by Dr. S. Sumaiya
- 3. Structure of insect head Head capsule is sclerotized and the head capsule excluding the appendages formed by the fusion of several sclerites is known as Cranium Sclerites of Head Vertex Frons Clypeus Gena occiput The surface of the head is divided into regions (sclerites) by a pattern of shallow grooves (sutures).
- 4. Sutures of head Epicranial Epistomal/ fronto clypeal Clypeo labral Post occipital
- 5. Posterior opening of the cranium through which aorta, foregut, ventral nerve cord and neck muscles passes is known as Occipital foramen. Endoskeleton of insect cuticle provides space for muscle attachment of muscles of antenna and mouthparts – Tentorium. Cephalic appendages : antenna, eyes, mouthparts Structure of insect head
- 6. Insect Heads 3 basic types Hypognathous Prognathous Opisthorhynchous
- 7. Hypognathous head (Hypo = below; gnathous = jaw) This type is called orthopteroid type. The long axis of the head is vertical. It is at right angles to the long axis of the body. Mouth parts hang ventrally downwards from head capsule. eg. Grasshopper, cricket, molecricket, cockroach, preying mantis, caterpillars, and most phytophagous insects living in open habitats.
- 8. Prognathous head (Pro = infront; gnathous = jaw) This type is also called coleopteroid type. The long axis of the head is horizontal. It is in line with the long axis of the body. Mouth parts are directed forward. eg. Ground beetle, soldier termite, and predators that actively hunt their prey (grub and adults of beetles and the grub of green lacewings).
- 9. Opisthognathous head (Opistho = behind; gnathous = jaw) This is also called hemipteroid type or opisthorhynchous type. Head is deflexed. Mouthparts are directed obliquely backwards (ventro- posteriorly) and held in between the forelegs. eg. Stink bug.
- 10. Types of Insect Antennae
- 11. Antenna One Pair on head Jointed Sensory (smell) Called “feelers” Filiform most common shape (segments = size) May be modified FILIFORM
- 12. Antennal suture Antennifer Pedicel Scape Flagellum Antennal socket Antennal sclerite Insect Antenna
- 13. Segments in antenna 1. Scape: The basal segment is called scape. It is conspicuously larger than succeeding segments. It is provided with intrinsic muscles. 2. Pedicel: The second antennal segment is called pedicel. A mass of sense cells called Johnston's organ is present in the pedicel, which is used as a ‘chordotonal organ’ (chord + tonal) in some of the insects like mosquitoes. Pedicel is also provided with intrinsic muscles. 3. Flagellum: The remaining annuli or flagellomeres are known as flagellum (plural - flagella) or clavola. Flagellomeres are not true segments because they lack intrinsic muscle. Surface of the flagellum is supplied with many sensory receptors that are
- 14. Setaceous antenna These are simplest type of antenna having bristle shape They are found in dragon fly
- 15. Capitate antenna Abruptly clubbed at the end. Example-butterfly
- 16. Clavate antenna Eg: Blister beetle
- 17. Filliform antenna They have thread like shape Example-ground beetles
- 20. Pectinate antenna (Unipectinate – comb like)
- 21. Bipectinate (Double comb like)
- 22. Serrate antenna They are saw toothed shape Example-click beetles or longicorn beetles
- 23. Aristate Antenna
- 24. Plumose antenna Segements with long whorl of hairs Ex: Male mosquito
- 25. Pilose (Hairy) Antenna is less feathery with fewer hairs at the junction of flagellomere e.g. female Culex mosquito.
- 26. Lamellate (Plate-like) Antennal tip is expanded laterally on one side to form that plates
- 27. Flabellate (Fan like) very small, third and subsequent segments with side processes giving fan like arrangements. Ex: Cedar beetle, Strepsipterans
- 28. Stylate antenna Terminal segment bear a style like process (Flagellum forms a long un segmented terminal hair Ex: Horse fly