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Introduction to Phylum ArthropodaPhylum ArthropodaSlide 3Class Crustacea: Crabs, lobsters, sowbugsSlide 5Class Chilopoda: CentipedesSlide 7Class Diplopoda: MillipedesSlide 9Class Arachnida: Spiders, ticks, mites, harvestman, scorpions, etc.Class ArachnidaClass Arachnida: Order Araneae: SpidersSlide 13Class Arachnida: Order Opiliones: Harvestman (Daddy Longlegs)Class Arachnida: Order Scorpiones: ScorpionsSlide 16Slide 17Slide 18Slide 19Slide 20Class Arachnida: Order Acari: TicksClass Arachnida: Order Acari: ChiggersClass Arachnida: Order Acari: MitesMitesSlide 25Mite Life CyclesWarm/Cool Season MitesMites in the GreenhouseMites in the LandscapeFamily Phytoseiidae: Predatory mitesFamily Tetranychidae: Spider mitesEpiclass Hexapoda: Insects, springtails, diplurans, proturansClass Entognatha: Order Diplura: DipluransClass Entognatha: Order Collembola: SpringtailsClass Entognatha: Order Protura: ProturansClass Insecta: InsectsClass Insecta: Order Thysanura: SilverfishClass Insecta: Pterygota: Winged InsectsClass Insecta: Order Ephemeroptera: MayfliesClass Insecta: Order Odonata: Dragonflies and damselfliesClass Insecta: Pterygota, NeopteraClass Insecta: Order Plecoptera: StonefliesClass Insecta: Pterygota, Neoptera: Paurometabolous/ gradual MetamorphosisClass Insecta: Order Phasmatodea: WalkingsticksClass Insecta: Order Orthoptera: Grasshoppers, katydids, and cricketsClass Insecta: Order Mantodea: MantidsClass Insecta: Order Blattaria: CockroachesClass Insecta: Order Isoptera: TermitesClass Insecta: Order Dermaptera: EarwigsClass Insecta: Order Phthiraptera (Mallophaga and Anoplura): LiceClass Insecta: Order Hemiptera: Suborder Heteroptera: True bugs Suborder Sternorrhyncha: Aphids, whiteflies, scales Suborder Auchenorrhyncha: Cicadas, hoppersClass Insecta: Order Hemiptera: Suborder Heteroptera: True bugsOrder Hemiptera: Suborder Sternorrhyncha Soft Scale (formerly in Order Homoptera)Order Hemiptera: Suborder Sternorrhyncha Armored Scale (formerly in Order Homoptera)Order Hemiptera: Suborder Auchenorhyncha Cicadas, hoppers (formerly Order Homoptera)Class Insecta: Order Thysanoptera: ThripsClass Insecta: Pterygota, Neoptera, Endopterygota: Holometabolous/ complete metamorphosisClass Insecta: Order Neuroptera: Lacewings, antlions, owlfliesSlide 59Class Insecta: Order Coleoptera: BeetlesSlide 61Class Insecta: Order Mecoptera: ScorpionfliesClass Insecta: Order Siphonoptera: FleasClass Insecta: Order Diptera: FliesSlide 65Class Insecta: Order Trichoptera: CaddisfliesClass Insecta: Order Lepidoptera: Moths and butterfliesSlide 68Class Insecta: Order Hymenoptera: Sawflies, wasps, bees, antsSlide 70Introduction to Phylum ArthropodaDr. Vera Krischik, Department of Entomology, University of Minnesota•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 Arthropoda•Insects•Arachnids (spiders, ticks, mites, etc.)•Crustaceans•Millipedes•CentipedesPhylum ArthropodaSod Webworm Moth, Crambus sp.Cottonwood Leaf Beetle,Chrysomela scriptaCUES, http://www.entomology.umn.edu/cues/IPM-turf/sodwebworms.htmClass Crustacea: Crabs, lobsters, sowbugsCrayfish•Two main body sections.•Five to seven pairs of legs.•Twopairs ofantennae.•Simpleeyes.O.F.A.H.http://www.invadingspecies.com/Class Crustacea: Crabs, lobsters, sowbugsPillbugsClass 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.Department of Entomology,University of Nebraska-LincolnGarden Centipede,Lithobius forficatusClass Chilopoda: CentipedesGeorgia ForestryCommission ArchivesGeorgia ForestryCommissionwww.forestryimages.orgFangs of Scolopendrid Centipede (above)House Centipede,Scutigera coleoptrata (right)Department of Entomology,University of Nebraska-LincolnClass Diplopoda: Millipedes•Two pairs of legs per body segment.•Cylindrical body.•Feed ondecayingplantmaterial.•Nocturnal.•Harmless.Emily G. TenczarPet African Giant MillipedesClass Diplopoda: MillipedesPhotos by William Leonard, Tree of Life Web Project, http://tolweb.org/tree/phylogeny.htmlClass Arachnida: Spiders, ticks, mites, harvestman, scorpions, etc. Yellow Garden SpiderTickMiteClass Arachnida•Mouthparts are calledchelicerae.•Most contain venom.•Antennae are absent.•Four pairs of legs.•Book lungs for respiration.Blacklegged Tick, Ixodes scapularisRonald F. BillingsTexas Forest Servicewww.forestryimages.orgYellow Garden Spider,Argiope aurantiaScott Bauer, USDA Agricultural Research Service, www.insectimages.org•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 spiderClass Arachnida:Order Araneae: SpidersDavid Cappaert, www.insectimages.orgJumping Spider, Phidippus audaxClass Arachnida:Order Araneae: SpidersDavid Keith, Department of EntomologyUniversity of Nebraska-LincolnCrab Spider,Misumenoides formosipesWolf Spider,Lycosa carolinensisJames O. Howell, The University of Georgia, www.forestryimages.org•One apparent bodyregion. •Abdomen andcephalothorax short.•Common and harmless.•Nocturnal. •Feed on detritus, fruit,or other animals.Class Arachnida:Order Opiliones: Harvestman (Daddy Longlegs)Leiobunum sp.Joseph Berger, www.insectimages.org•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.Class Arachnida:Order Scorpiones: ScorpionsStriped Bark Scorpion, Centruroides vittatus,gravid female from TexasE. TenczarClass Arachnida:Order Scorpiones: ScorpionsNorthern Desert Hairy Scorpion, Hadrurus spadix, native to US E. TenczarEmperor Scorpion,Pandinus imperator,female eating cockroach, native to West AfricaE. TenczarClass Arachnida:Order Scorpiones: ScorpionsArizona Bark Scorpion, Centruroides exilicauda, matingE. TenczarClass Arachnida:Order Scorpiones: ScorpionsLined Devil


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U of M ENT 4015 - Introduction to Phylum Arthropoda

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