Slide 1Phylum OnychophoraSlide 3Slide 4Slide 5Slide 6Slide 7Phylum ArthropodaCharacteristics of the ArthropodaSlide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Classification of Phylum ArthropodaClassification of the ArthropodaSubphylum ChelicerataSlide 29Slide 30Slide 31Slide 32Subphylum Chelicerata: Horseshoe crabsHorseshoe crabsSlide 35Subphylum Chelicerata: Class Pycnogonida: sea spidersSlide 37Slide 38Class Pycnogonida: sea spidersSubphylum Chelicerata: Class Arachnida: Order Aranae: spidersSpidersSlide 42Slide 43Slide 44Slide 45Slide 46Slide 47Slide 48Slide 49Bolas spidersGladiator spiderSilk-spinningSlide 53Web buildingSlide 55Reproduction in spidersSlide 57Slide 58Toxic spidersSlide 60Slide 61Slide 62Slide 63Slide 64Slide 65Slide 66Slide 67Slide 68Slide 69Slide 70Slide 71Slide 72Slide 73Slide 74Slide 75Subphylum Chelicerata: Order Scorpionida: ScorpionsScorpionsSlide 78Slide 79Slide 80Slide 81Slide 82FeedingScorpion toxicitySlide 85Scorpion courtshipSlide 87Slide 88Order Uropygidi: whip scorpions and Order Amblypygi: tail-less whip scorpionsSlide 90Slide 91Uropygids and AmblypygidsSlide 93Subphylum Chelicerata: Order Opiliones: harvestmenSlide 95HarvestmenSlide 97Slide 98Subphylum Chelicerata: Order Acari: ticks and mitesSlide 100Ticks and mitesDisease carrying ticksSlide 103Slide 104Lyme DiseaseSlide 106Slide 107Commensal mitesSlide 109Commensal MitesSlide 111ChiggersSlide 113OnychophoraTardigradaArthropodaNematodaNematomorphaKinorhynchaPriapulidaLoriciferaEcdysozoaPhylum OnychophoraPhylum OnychophoraPhylum Onychophora: Velvet worms, Peripatus.Phylum Onychophora: Velvet worms, Peripatus.All modern Onychophorans are terrestrial but fossils, All modern Onychophorans are terrestrial but fossils, which date back to the Cambrian, are mainly from which date back to the Cambrian, are mainly from marine sediments.marine sediments.Onychophorans look a bit like slugs with legs and when Onychophorans look a bit like slugs with legs and when first described in 1825 were thought to be mollusks.first described in 1825 were thought to be mollusks.However, now placed at the base of the Arthropod family However, now placed at the base of the Arthropod family tree. tree.http://www.jennifermarohasy.com/blog/archives/Peripatus.jpgPhylum OnychophoraPhylum OnychophoraAbout 10 genera and approximately 110 species. 1.4-About 10 genera and approximately 110 species. 1.4-15cm in length.15cm in length.Geographically widely distributed in suitable moist, humid Geographically widely distributed in suitable moist, humid habitats such as tropical (e.g. Congo, northern South habitats such as tropical (e.g. Congo, northern South America, Himalayas) and southern temperate forest (e.g. America, Himalayas) and southern temperate forest (e.g. New Zealand, Australia, South Africa, Andes).New Zealand, Australia, South Africa, Andes).Limited habitat distribution (and exclusively nocturnal Limited habitat distribution (and exclusively nocturnal behavior) related to problem of water loss.behavior) related to problem of water loss.Like other arthropods, Onychophorans have a chitinous Like other arthropods, Onychophorans have a chitinous cuticle, which is molted as they grow, but it is thin and cuticle, which is molted as they grow, but it is thin and flexible, non-waxy and permeable. flexible, non-waxy and permeable.Phylum OnychophoraPhylum OnychophoraOnychophorans do not have jointed legs, Onychophorans do not have jointed legs, but possess other arthropod but possess other arthropod characteristics including a reduced coleom characteristics including a reduced coleom and a hemocoel.and a hemocoel.The 14-43 pairs of legs are large and The 14-43 pairs of legs are large and conical with terminal pads and claws. conical with terminal pads and claws. They move using their legs and by They move using their legs and by extending and contracting the body.extending and contracting the body.Phylum OnychophoraPhylum OnychophoraMost are predators and use glue which Most are predators and use glue which they can spray from a pair of oral papillae they can spray from a pair of oral papillae to catch their prey.to catch their prey.They can spray two streams of glue up to They can spray two streams of glue up to 50cm and this hardens almost 50cm and this hardens almost immediately trapping the prey in a net of immediately trapping the prey in a net of sticky threads.sticky threads.Phylum OnychophoraPhylum OnychophoraPeripatus video 3 minutesPeripatus video 3 minuteshttp://www.youtube.com/watch?http://www.youtube.com/watch?v=FbVDYSiH-Vwv=FbVDYSiH-VwPhylum ArthropodaPhylum ArthropodaThe Arthropoda (from the Greek Arthron, The Arthropoda (from the Greek Arthron, joint and podus, foot) are the largest group joint and podus, foot) are the largest group of organisms and they occur in all of organisms and they occur in all environments on earth.environments on earth.The group includes: spiders, ticks, mites, The group includes: spiders, ticks, mites, centipedes, millipedes, crustaceans, centipedes, millipedes, crustaceans, insects and others.insects and others.Characteristics of the ArthropodaCharacteristics of the ArthropodaBilaterally symmetrical with a segmented Bilaterally symmetrical with a segmented (metameric) body divided into head, (metameric) body divided into head, thorax and abdomen; cephalothorax and thorax and abdomen; cephalothorax and abdomen; or fused head and trunk.abdomen; or fused head and trunk.http://members.fortunecity.com/nrbq1/gal4arthropod9.jpg Rove beetleGoliath bird-eating spiderhttp://animal-world.com/encyclo/reptiles/spiders/images/GoliathBirdEatingSpiderWHSp_AP7I.jpghttp://static.howstuffworks.com/gif/tick-1.jpg http://repairstemcell.files.wordpress.com/2009/09/tick-bird.jpghttp://www.butterflyrevolt.com/wp-content/uploads/2009/04/centipede.jpgCharacteristics of the ArthropodaCharacteristics of the ArthropodaJointed appendages. Primitively one pair Jointed appendages. Primitively one pair per segment, but number often reduced. per segment, but number often reduced. Appendages often greatly modified for Appendages often greatly modified for specialized tasks.specialized tasks.Characteristics of the ArthropodaCharacteristics of the ArthropodaExoskeleton of cuticle. Exoskeleton of cuticle. Exoskeleton secreted by underlying Exoskeleton secreted by underlying