Introduction to phylum arthropoda
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Introduction to Phylum Arthropoda. Phylum Arthropoda. Segmented body. Paired segmented appendages. Bilateral symmetry. Chitinous exoskeleton. Tubular alimentary canal with mouth and anus. Open circulatory system, a tubular dorsal blood vessel. Body cavity or coelom.

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Introduction to Phylum Arthropoda

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Introduction to phylum arthropoda

Introduction to Phylum Arthropoda


Phylum arthropoda

Phylum Arthropoda

  • Segmented body.

  • Paired segmented appendages.

  • Bilateral symmetry.

  • Chitinous exoskeleton.

  • Tubular alimentary canal with mouth and anus.

  • Open circulatory system, a tubular dorsal blood vessel.

  • Body cavity or coelom.

  • Nervous system of anterior ganglia and paired nerve cords.

  • Striated muscles in skeletal system.

  • Respiration by gills, tracheae, or spiracle.


Phylum arthropoda1

Phylum Arthropoda

  • Insects

  • Arachnids (spiders, ticks, mites, etc.)

  • Crustaceans

  • Millipedes

  • Centipedes

Cottonwood Leaf Beetle,Chrysomela scripta

CUES, http://www.entomology.umn.edu/cues/IPM-turf/sodwebworms.htm

Sod Webworm Moth, Crambus sp.


Class crustacea crabs lobsters sowbugs

Class Crustacea: Crabs, lobsters, sowbugs

  • Two main body sections.

  • Five to seven pairs of legs.

  • Twopairs ofantennae.

  • Simpleeyes.

O.F.A.H.http://www.invadingspecies.com/

Crayfish


Class crustacea crabs lobsters sowbugs1

Class Crustacea: Crabs, lobsters, sowbugs

Pillbugs


Class chilopoda centipedes

Class Chilopoda: Centipedes

  • One pair of legs per body segment.

  • Flattened body.

  • First pair of legs modified as venomous fangs.

  • Nocturnal predators.

  • Few are dangerous to humans.

Garden Centipede,Lithobius forficatus

Department of Entomology,University of Nebraska-Lincoln


Class chilopoda centipedes1

Class Chilopoda: Centipedes

Georgia ForestryCommission ArchivesGeorgia ForestryCommissionwww.forestryimages.org

Fangs of Scolopendrid Centipede (above)House Centipede,Scutigera coleoptrata (right)

Department of Entomology,University of Nebraska-Lincoln


Class diplopoda millipedes

Class Diplopoda: Millipedes

  • Two pairs of legs per body segment.

  • Cylindrical body.

  • Feed ondecayingplantmaterial.

  • Nocturnal.

  • Harmless.

Emily G. Tenczar

Pet African Giant Millipedes


Class diplopoda millipedes1

Class Diplopoda: Millipedes

Photos by William Leonard, Tree of Life Web Project, http://tolweb.org/tree/phylogeny.html


Class arachnida spiders ticks mites harvestman scorpions etc

Class Arachnida: Spiders, ticks, mites, harvestman, scorpions, etc.

Tick

Mite

Yellow Garden Spider


Class arachnida

Class Arachnida

Ronald F. BillingsTexas Forest Servicewww.forestryimages.org

  • Mouthparts are calledchelicerae.

  • Most contain venom.

  • Antennae are absent.

  • Four pairs of legs.

  • Book lungs for respiration.

Blacklegged Tick, Ixodes scapularis

Yellow Garden Spider,Argiope aurantia

Scott Bauer, USDA Agricultural Research Service, www.insectimages.org


Class arachnida order araneae spiders

Class Arachnida:Order Araneae: Spiders

  • Two body regions(cephalothorax, abdomen).

  • Fangs (chelicerae), mostare venomous.

  • Most are not dangerous.

  • Most make webs.

  • Most have poor eyesight;hairs compensate for it(jumping spiders are an exception).

  • Potentially dangerous spiders (bites are uncommon):Brown recluse spider, Black widow spider

David Cappaert, www.insectimages.org

Jumping Spider, Phidippus audax


Class arachnida order araneae spiders1

Class Arachnida:Order Araneae: Spiders

David Keith, Department of EntomologyUniversity of Nebraska-Lincoln

Crab Spider,Misumenoides formosipes

Wolf Spider,Lycosa carolinensis

James O. Howell, The University of Georgia, www.forestryimages.org


Class arachnida order opiliones harvestman daddy longlegs

Class Arachnida:Order Opiliones: Harvestman (Daddy Longlegs)

  • One apparent bodyregion.

  • Abdomen andcephalothorax short.

  • Common and harmless.

  • Nocturnal.

  • Feed on detritus, fruit,or other animals.

Leiobunum sp.

Joseph Berger, www.insectimages.org


Class arachnida order scorpiones scorpions

Class Arachnida:Order Scorpiones: Scorpions

  • Long tail with sting.

  • Pedipalps are modifiedas pinchers.

  • Most scorpion stingsare no worse than beestings; only a minorityof species arepotentially dangerous.

  • Nocturnal.

  • Common in warmclimates.

  • Feed on other animals.

E. Tenczar

Striped Bark Scorpion, Centruroides vittatus,gravid female from Texas


Class arachnida order scorpiones scorpions1

Class Arachnida:Order Scorpiones: Scorpions

E. Tenczar

E. Tenczar

Emperor Scorpion,Pandinus imperator,female eating cockroach, native to West Africa

Northern Desert Hairy Scorpion, Hadrurus spadix,native to US


Class arachnida order scorpiones scorpions2

Class Arachnida:Order Scorpiones: Scorpions

E. Tenczar

Arizona Bark Scorpion, Centruroides exilicauda, mating


Class arachnida order scorpiones scorpions3

Class Arachnida:Order Scorpiones: Scorpions

E. Tenczar

E. Tenczar

Flat Rock Scorpion,Hadogenes troglodytes,female, native toSouth Africa

Lined Devil Scorpion,Vaejovis spinigerus,female from Arizona with young


Class arachnida order scorpiones scorpions4

Class Arachnida:Order Scorpiones: Scorpions

E. Tenczar

Slenderbrown Bark Scorpion,Centruroides gracilis,male from Central America

E. Tenczar

Pandinus imperator; scorpions glow under UV/ black light


Class arachnida order scorpiones scorpions5

Class Arachnida:Order Scorpiones: Scorpions

E. Tenczar

E. Tenczar

Black Thick-Tailed Scorpion, Parabuthus transvaalicus, a highly venomous species native to South Africa


Class arachnida order acari ticks

Class Arachnida: Order Acari: Ticks

  • Ticks have two body regions.

  • Young have six legs, adults have eight.

  • There are hard and soft-bodied ticks.

  • Ticks are much larger than mites, some females as large as a nickel.

Jim Occi, BugPics, www.insectimages.org

Blacklegged Tick, Ixodes scapularis


Class arachnida order acari mites

Class Arachnida:Order Acari: Mites

  • Mites have only one noticeable body region.

  • Many are microscopic or close to it.


Mites

Mites

  • Female: round abdomen

  • Male: pointed abdomen

  • Larva 3 pairs of legs


Family phytoseiidae predatory mites

Family Phytoseiidae: Predatory mites

Predatory mites:

Phytoseiulus persimilis


Family tetranychidae spider mites

Family Tetranychidae: Spider mites

Clover Mite, Bryobia praetiosa

  • Found in turf.

  • Long front legs.

  • Make webbing in fall.


Epiclass hexapoda insects springtails diplurans proturans

Epiclass Hexapoda:Insects, springtails, diplurans, proturans

  • Three distinct bodyregions: head, thorax,abdomen.

  • One pair antenna.

  • One pair of mandibles.

  • One pair of maxillae.

  • Three pairs of legs onthorax.

  • Tracheal respiratory system- composed of tubes with holes (spiracles) through the body that admit air.

Japanese Beetle,Popillia japonica


Class insecta insects

Class Insecta: Insects

  • Protruding mouthparts, unlike non-insect hexapods.

  • Ametabolous, hemimetabolous, parametabolus, or holometabolous.

  • Most have wings.

David Cappaert, www.insectimages.org

Milkweed Leaf Beetle,Labidomera clivicollis


Class insecta order thysanura silverfish

Class Insecta:Order Thysanura: Silverfish

  • Ametabolous: simple metamorphosis.

  • Three tail-like appendages.

  • Body flattened and covered with scales.

  • Wingless adults.

  • Differencebetween nymphsand adults is size.

  • Found inwet places.

Lepisma saccharina

Clemson University - USDA Cooperative Extension Slide Serieswww.insectimages.org


Class insecta pterygota winged insects

Class Insecta: Pterygota: Winged Insects

Lacy L. HycheAuburn Universitywww.insectimages.org

  • Most adult forms have wings.

  • Hemimetabolous, parametabolus, or holometabolous.

Polyphemus Moth, Antheraea polyphemus


Class insecta order odonata dragonflies and damselflies

Class Insecta:Order Odonata: Dragonflies and damselflies

  • Hemimetabolous metamorphosis: simple, incomplete.

  • Toothed mandibles (chewing mouthparts).

  • Winged adults.

  • Nymphs and adults different in appearance.

  • Aquatic nymphs with gills.

  • Indicate good water quality.

David Cappaert, www.insectimages.org

Damselfly


Class insecta pterygota neoptera

Class Insecta: Pterygota, Neoptera

  • These insects can fold their wings back over the body.

Green Stink Bug, Acrosternum hilare

David Cappaert, www.insectimages.org


Class insecta order orthoptera grasshoppers katydids and crickets

Class Insecta: Order Orthoptera: Grasshoppers, katydids, and crickets

  • Straight wings.

  • Winged adults.

  • Chewing mouthparts.

  • Nymphs and adults in same habitat.

  • Nymphs and adults similar in appearance.

Redlegged Grasshopper,Melanoplus femurrubrum

Russ Ottens, The University of Georgia www.insectimages.org


Class insecta order mantodea mantids

Class Insecta:Order Mantodea: Mantids

Clemson Universityhttp://entweb.clemson.edu/cuentres/cesheets/benefici/ce178.htm

  • Winged adults.

  • Chewing mouthparts.

  • Nymphs and adults insame habitat.

  • Nymphs and adultssimilar in appearance.

Praying Mantis


Class insecta order blattaria cockroaches

Class Insecta:Order Blattaria: Cockroaches

  • Winged adults.

  • Chewing mouthparts.

  • Nymphs and adults in same habitat.

  • Nymphs and adults similar in appearance.

Clemson University - USDA Cooperative Extension Slide Series www.insectimages.org

American Cockroach, Periplaneta americana


Class insecta order isoptera termites

Class Insecta:Order Isoptera: Termites

  • Equal wings.

  • Winged adults.

  • Chewingmouthparts.

  • Nymphs andadults in samehabitat.

  • Nymphs and adults similar in appearance.

Gerald J. Lenhard, www.insectimages.org

Formosan Subterranean Termite,Coptotermesformosanus


Class insecta order dermaptera earwigs

Class Insecta:Order Dermaptera: Earwigs

  • Skin-like front wings.

  • Winged adults.

  • Chewing mouthparts.

  • Nymphs and adults in same habitat.

  • Nymphs and adults similar in appearance.

Striped Earwig,Labidura riparia

Joseph Berger, www.insectimages.org


Class insecta order phthiraptera mallophaga and anoplura lice

Class Insecta: Order Phthiraptera (Mallophaga and Anoplura): Lice

  • Wingless adults.

  • Chewing or suckingmouthparts.

  • Nymphs and adultsin same habitat.

  • Nymphs and adultssimilar in appearance.

Sucking Louse,Haematopinus eurysternus

Iowa State University''s Entomology Image Gallery


Order hemiptera suborder auchenorhyncha cicadas hoppers formerly order homoptera

Order Hemiptera: Suborder Auchenorhyncha Cicadas, hoppers (formerly Order Homoptera)

Spittlebug

Leafhopper


Class insecta pterygota neoptera endopterygota holometabolous complete metamorphosis

Class Insecta: Pterygota, Neoptera, Endopterygota: Holometabolous/complete metamorphosis

  • Lacewings

  • Beetles

  • Scorpionflies

  • Fleas

  • Flies

  • Caddisflies

  • Moths andbutterflies

  • Sawflies, wasps,and bees

Herbert A. "Joe" Pase III, Texas Forest Service, www.insectimages.org

Forest Tent Caterpillars, Malacosoma disstria


Class insecta order neuroptera lacewings antlions owlflies

Class Insecta: Order Neuroptera:Lacewings, antlions, owlflies

Bradley Higbee, Paramount Farming, www.insectimages.org

Green Lacewing, Chrysoperla sp., Adult (left) and Larva (right)


Class insecta order coleoptera beetles

Class Insecta:Order Coleoptera: Beetles

Japanese Beetle,Popillia japonica, Adult (left)and Scarab Larva (below)


Class insecta order coleoptera beetles1

Class Insecta:Order Coleoptera: Beetles

  • Hardened forewings (elytra).

  • Winged adults.

  • Chewing mouthparts.

  • Larvae and adults in same habitat.

  • Larvae and adults not similar in appearance.


Class insecta order siphonoptera fleas

Class Insecta:Order Siphonoptera: Fleas

David R. Maddison, Tree of Life Web Projecthttp://tolweb.org/tree/phylogeny.html

  • Wingless adults.

  • Sucking mouthparts.

  • Larvae and adultsnot similar inappearance.

  • Often pests of mammals.

Oriental Rat Flea, Xenopsylla cheopis


Class insecta order diptera flies

Class Insecta:Order Diptera: Flies

Michigan State Universityhttp://www.msue.msu.edu/vanburen/fappmag.htm

Fly Larva (maggot)

Tachinid Fly Adult


Class insecta order diptera flies1

Class Insecta:Order Diptera: Flies

  • Winged adults.

  • 2nd pair of wings are halteres.

  • Larvae and adults often in same habitat.

  • Larvae and adults not similar in appearance.

  • Some spread diseases to humans and livestock.

  • Some are parasitoids.


Class insecta order lepidoptera moths and butterflies

Class Insecta:Order Lepidoptera: Moths and butterflies

Cankerworm Larvae (right)and Adult (below)

CUEShttp://www.entomology.umn.edu/cues/dx/vk/canker.htm


Class insecta order lepidoptera moths and butterflies1

Class Insecta:Order Lepidoptera: Moths and butterflies

  • Winged adults.

  • Larvae and adults not similar in appearance.

  • Most larvae feed on plant tissue.

  • Many moths are pests; most butterflies are not.


Class insecta order hymenoptera sawflies wasps bees ants

Class Insecta:Order Hymenoptera: Sawflies, wasps,bees, ants

John H. GhentUSDA Forest Servicewww.forestryimages.org

CUES, http://www.entomology.umn.edu/cues/dx/sk/pine11.htm

Introduced Pine Sawfly, Diprion similis, Adults (left) and Larva (right)


Class insecta order hymenoptera sawflies wasps bees ants1

Class Insecta:Order Hymenoptera: Sawflies, wasps, bees, ants

  • Membranous wings.

  • Winged adults.

  • Larvae and adults not similar in appearance.

  • Sawflies are phytophagous.

  • Some wasps are parasitoids.

  • Many wasps, bees, and all ants are social.


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