Ecdysozoa:! Basic characteristics:! Symmetry? Development?! What is it named for?! Hormone involved?!
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2 Ecdysozoa:! Basic characteristics:! Symmetry? Development?! What is it named for?! Hormone involved?! Also includes Nematoda and Tardigrada! Which one of these is not like the other?!
3 Arthropoda:! Also includes:! Trilobitomorpha! Chelicerata! Phalangium, Pandinus, Sarcoptes, Ixodes, Haplopelma, Nephila! Myriapoda! Scolopendra, Glomeris! Crustacea! Daphnia, Triops, Homarus, Stenopus, Birgus, Oniscus! Biramous appendages! Coelomate! Where is it located?! Hemocoel! What function does it take in insects?!
4 Hexapoda:! Three thoracic segments! Three pairs of legs! ʻTripodʼ walking! Wings?! Podura aquatica! Also includes entognaths! Collembola springtails! Short legs, plump oval body, few abdominal segments! Furcula ʻtailʼ held under tension under the body allows jumping!
5 Insecta:! Latin insectum divided body! Primarily land and air who rules the sea?! Metamorphosis! Anamorphosis! Simple metamorphosis hemimetabolous! Nymph, instar! True metamorphosis holometabolous! First appear in the Devonian period ~400 million years ago!
6 Insect morphology!
7 Thysanura: Silverfish! Greek thysanos oura tassel tail! Two lateral abdominal cerci and a caudal filament! Wingless! Long flat body, simple mouthparts, reduced or no eyes, long antennae! Unique life cycle effectively no metamorphosis! Continue to molt after sexual maturity! Unspecialized chewing mouthparts! Often mistaken for earwigs - Dermaptera! Lepisma saccharina!
8 Pterygota:! Winged insects! Many secondarily wingless! Odonata: Dragonflies! Greek odontos tooth! Toothed mandibles (bad name, lots of other insects also have this)! Carnivorous chewing mouthparts! Large compound eyes! Short filiform antennae! Hemimetabolous development! Libellula vibrans!
9 Neoptera:! Able to fold wings back over the abdomen! Dictyoptera:! Greek diktuon pteron net wing! Also includes Mantodea, the mantids! Blattaria: Cockroaches! Latin blatta cockroach! Thickened forewings tegmina! Prominent cerci, flat body, small head under extended pronotum, long filiform antennae! Chewing mouthparts! Hemimetabolous young are often very pale! Blattabacterium cuenoti mutualistic! endosymbiont found in all Blattaria! Blatta orientalis!
10 Isoptera: Termites! Iso pter same wings! Winged individuals have two sets of nearly identical wings! Typically wingless! Winged alates are reproductive! Eusocial caste system! Differential caste morphology! Thorax-abdomen connection is often not distinct! Macretermes! glivus!
11 Orthoptera: Grasshoppers, crickets! Greek ortho ptera straight wing! Prominent tympanum ʻeardrumʼ! Chewing mouthparts! Simple metamorphosis! Schistocerca pallens! Tettigonia viridissima!
12 Phthiraptera: Lice! Greek phtheir a ptera louse no wings! Obligate parasites of mammal and avian species! Which mammals donʼt get lice?! Biting/sucking mouthparts - parasitic! Dorsoventrally flattened body! Generally colorles! Often eyeless, or very reduced eyes! Reduced filiform antennae! Adapted tarsal hooks! Pediculus humanus!
13 Hemiptera: Generic ʻbugsʼ cicadas, aphids, stink bugs! Hemimetabolous howʼd you guess?! Wingless young slowly develop wings through successive instars! Some have half-and-half forewings! Half leathery and half membranous! X marks the bug! Donʼt mistake them for beetles!! Visibly crossed wings! Piercing mouthparts Rostrum! Feed on fluids! Varied antennae! Cicadella viridis! Aphis pomi!
14 Endopterygota:! Endo ptery internal wings! Wings develop within true metamorphosis! AKA holometabola! All orders of endopterygota are holometabolous! Siphonaptera: Fleas! Siphon a ptera tube no wing! Piercing/sucking mouthparts! Powerful jumping legs! Elastic protein resilin stores energy in tarsi! Sexual maturity in fleas is influenced by hormones in host blood! Laterally flattened body! Allows movement between hairs! Short recessed antennae! Pulex! irritans!
15 Coleoptera: The Beatles! Also includes weevils! Greek koleos pteron sheath wing! Thickened forewings elytra! Hind wings are membranous flight wings! Pronounced pronotum! Downward pointing head! Often enlarged specialized mandibles! Carabus nemoralis! Psylliodes! affinis! Curculio! villosis! Agrilus albogularis!
16 Hymenoptera: Bees, wasps, ants! Greek hymen ptera membranous wing! Complete metamorphosis! Two pairs of wings act as one! Hamuli hooks on hind wings attach to forewings! Some mouthparts modified to sucking proboscis! Distinctive pinched abdomen! Major modification of ovipositor to sting! Vespa crabro! Apis mellifera! Urocerus gigas! Rhyssa amoena!
17 Lepidoptera: Butterflies, moths! Greek lepis ptera scale wing! Larval chewing mouthparts, adult sucking mouthparts! Large compound eyes! Proboscis! Acronicta americana! Geometra papilionaria! Papilio! ulysses! Macroglossum pyrrhosticta!
18 Diptera: Flies, mosquitoes! Greek di ptera two wings! A winged insect with only one pair of wings? Thatʼs unpossible!! Halteres greatly reduced wings! Originate from which segment?!! Highly modified mouthparts! Short simple antennae! Well developed eyes! Tabanus bovinus! Eristalis! tenax! Drosophila melanogaster! Culex quinquefasciatus!
19 Drosophila!! Sexing! Identifying virgins! Common mutant phenotypes! Well, at least two out of three sound exciting! Commonly observed mutations: eye and body color, wing shape, hair morphology! Virgins are much lighter in color with a dark splotch in the abdomen the meconium! Male: Sex combs on forelegs, rounder darker abdomen, dark spots on wings in some species! Female: Pointed abdomen, often larger!
20 Tricky bugs! Who am I?! Whoʼs who?! Which one of these is not like the others?!
21 Insect behavior! Lots of mimicry! Complex social interactions! Colonial populations relatedness influences behavior! Sex determination by chromosome count! Learning and memory! Symbolic communication!
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