Insect Abdomen, Antennae and Legs PDF

INSECT ABDOMEN, ANTENNAE AND LEGS GROUP C  A T A R E A N T E N N W H A ? ANTENNA ARE PAIRED ORGANS ON THE HEADS OF INSECTS (ALSO CALLED FEELERS). PRINCIPAL ORGANS OF INSECT SEGMENTED, VARY IN FORM AND STRUCTURE AID IN INCREASED SENSORY ACTIVITIES, SPE...

INSECT ABDOMEN, ANTENNAE AND LEGS GROUP C  A T A R E A N T E N N W H A ? ANTENNA ARE PAIRED ORGANS ON THE HEADS OF INSECTS (ALSO CALLED FEELERS). PRINCIPAL ORGANS OF INSECT SEGMENTED, VARY IN FORM AND STRUCTURE AID IN INCREASED SENSORY ACTIVITIES, SPECIALIZED FOOD/FEEDING, AND MATE LOCATION.  A T I S A N T E N N A W H E ? THE ANTENNA OF INSECTS ARE MODIFIED IN MANY WAYS: USED TO PROVIDE GREATER SURFACE AREA FOR SENSORY RECEPTORS USED FOR DETECTING SOUND VIBRATIONS, WIND SPEED, OR HUMIDITY BASIC PARTS OF ANTENNAE SCAPE - THE BASAL SEGMENTED THAT ARTICULATES WITH THE HEAD CAPSULE PEDICEL - THE SECOND ANTENNAL SEGMENT FLAGELLUM - ALL THE REMAINING "SEGMENTS" (INDIVIDUALLY CALLED FLAGELLOMERES)  TYPES OF ANTENNAE PLUMOSE ANTENNA SETACEOUS ANTENNA THESE TYPE OF ANTENNA HAVE SIMPLEST TYPE OF ANTENNA HORIZONTAL BRUSHES ON ROOT HAVING BRISTLE SHAPE LIKE ANTENNA. (EX: MOTH AND DRAGON FLY MOSQUITOES) TYPES OF ANTENNAE ARISTATE ANTENNA CAPITATE ANTENNA POUCH LIKE WITH A ABRUPLY CLUBBEB AT THE LATERAL BRISTLE. (EX: END. (EX: BUTTERFLY) HOUSE FLY). TYPES OF ANTENNAE CLAVATE ANTENNA FILIFORM ANTENNA GRADUALLY CLUBBED AT THEY HAVE A THREAD LIKE SHAPE (EX: GROUND THE END (EX: CARION BEETLES) BEETLES) https://www.agrostudy.in/2021/10/structure-and-modifications-of-insect.html TYPES OF ANTENNAE GENICULATE ANTENNA MONOLIFORM ANTENNA THEY ARE HINGED OR BENT THEY ARE BEAD LIKE IN LIKE AN ELBOW (EX: BEES SHAPE (EX: TERMITES) AND ANT)  TYPES OF ANTENNAE PECTINATE ANTENNA SERRATE ANTENNA COMB LIKE SHAPE (EX: THEY ARE SAW TOOTHED GLOW WORM AND FIRE SHAPE. (EX: CLICK BEETLES) COLORED BEETLES) INSECT LEGS STRUCTURE Composed of six legs Attached to thorax pro, meso, and metathorax bear a pair of segmented legs. Each consist of six segments: coxa, trochanter, femur, tibia, tarsus, and pretarsus https://extension.entm.purdue.edu/401Book/default.php?page=insect_anatomy  COXA Proximal leg segment Articulates with the cup like depression on the thoracic pleuron Attached to the body TROCHANTER Second leg segment Usually small and single segmented Two segmented in dragonfly and damselfly The apparent second trochanter is in fact a part of femur, which is called trochantellus  FEMUR Third segment Largest segment Fixated to trochanter TIBIA Long and provided with downward projecting spines which aid in climbing and footing Many are armed with large moveable spur near the apex TARSUS It is further sub-divided. The sub segment of the tarsus is called tarsomere The basal tarsal segment is often larger than others and is called basitarsus. PRETARSUS Terminal segment Contain claws In diptera, consists of a membranous pulvilli TYPES OF INSECT LEGS AMBULATORIAL Walking legs Femur and tibia are long Found in mantids, leaf beetles, and bugs (Hemiptera), among others CURSORIAL Running legs Thin & tubular with flattened femur Highly muscular coxa Tibia and tarsi slender and elongated Found in cockroaches, ground beetles, and tiger beetles, among others SALTATORIAL Jumping/hopping legs Often features an enlarged femur filled with bulky, strong muscles Found in grasshoppers and fleas, among others  RAPTORIAL Hunting legs Front pair of legs modified to grasp and hold prey for feeding Usually held out by insects in front of their bodies Found in wasps and praying mantises, among others NATATORIAL Swimming legs Flattened, broad, and fringed with dense hairs Found in diving beetles, among others FOSSORIAL For excavation or digging Tend to be very broad, very flat, and very dense, often with big, strong claws Found in mole crickets, among others CLASPING Specialized for holding e.g., holding the female during copulation Found in diving beetle (front legs), among others STRIDULATING For sound production Found in crickets and grasshoppers, among others SCANSORIAL For holding objects, clinging, or climbing Tibia is stout and at one side bears a thump like process Tarsus is single segmented and has a single large claw that usually fits against the thumb-like process Found in head lice, among others  FORAGIAL For collecting food materials The junction of the tibia and tarsus of the hindlegs houses the pollen basket or corbiculum (storage organ) Found in honey bees, among others BASKET-LIKE Spiny and closely placed Legs are situated just being the head anteriorly, and are used only for seizing and storing prey Found in dragonflies and damselflies, among others  STICKING Used to hold onto ground through adhesive pads found under a claw (pulvilli) Pulvilli are covered with dense mats of tiny glandular hairs (tenant hairs) Found in houseflies, among others CRAWLING Fleshy, false, unsegmented legs Found in catterpillars (abdomen), among others https://wildlifeanimalz.blogspot.com/2012/03/caterpillar-info-fact-and-photos.html?m=1 INSECT ABDOMEN  ABDOMEN Third function region of an insect body Located behind the thorax Reproduction and digestion Jointed by membranous pleural region which are commonly hidden beneath the sides of tergum Reproductive opening of male insect is usually on segment 9 Reproductive opening of oviduct is on or behind segment 8 and 9  ABDOMEN In diptera, coleoptera, and hymenoptera; there is no sclerotization and the abdomen consist of serious of membranous segments In ephemeroptera and dermaptera; tergum sternum and pleural element is sometimes fuse In acrididae; segments 9 and 10 of terga is fuse together In some coleoptera; the second sternum is fused with the next two sternum and the sutures between them is largely obliterated. ABDOMINAL STRUCTURES Spiracle - opening of the respiratory system near the pleural membrane on each side of the first eight abdomen ABDOMINAL STRUCTURES Anus - rear opening to the respiratory system present between the three protective sclerites ABDOMINAL STRUCTURES Cerci - pair of sensory organ located near the anterior margin of paratop ABDOMINAL STRUCTURES Clasper - external genitalia, may also include other sclerites ABDOMINAL STRUCTURES Pincers - heavily sclerotized Cerci and forceps, mostly for defense and folding of wings (EX: dermaptera) ABDOMINAL STRUCTURES Median caudal filament - thread like projection arising between the Cerci (EX: diplura, thynasura) ABDOMINAL STRUCTURES Cornicles - paired secretory structure located dorsally on the abdomen of aphids, repel of predators or symbiotic with ants. ABDOMINAL STRUCTURES Abdomen proleg - fleshy locomotory appendages found only in some insect larvae ABDOMINAL STRUCTURES Sting - modified ovipositor, found only in females of aculeate hymenoptera ABDOMINAL STRUCTURES Abdominal gills - respiratory organs found in nymphs of certain aquatic insects ABDOMINAL STRUCTURES Furcula - jumping organ found in collembolan on the ventral side of the fifth abdominal segment. ABDOMINAL STRUCTURES Collophore - fleshy peg like structure. Found in collembolan on the ventral side of the first abdominal segment. Stabilization  THANK YOU FOR LISTENING! Don't hesitate to ask any questions!  REFERENCES https://www.slideshare.net/slideshow/insect-leg-249783793/249783793 https://www.slideshare.net/slideshow/insect-leg-249783793/249783793 https://keys.lucidcentral.org/keys/cpitt/public/Insects/html/filiant.htm https://australianbutterflies.com/whats-difference-butterflies-skippers-moths/ FREE RESOURCE PAGE FREE RESOURCE PAGE FREE RESOURCE PAGE