1. Phylum Arthropoda Jointed appendages Exoskeleton Bilateral symmetry Open Circulatory System Well developed nervous system with a Brain Well developed muscles

2. Subphylum Uniramia Unbranched appendages

4. Subphylum Uniramia Unbranched appendages Jaws

7. Subphylum Uniramia Unbranched appendages Jaws One pair of antennae

9. Class Insecta Six walking legs Three body sections

11. Mosquito

12. Dragonfly

13. Wasp

14. Ants

15. Grasshopper

16. Praying Mantis

17. Monarch Butterfly

18. Butterfly Metamorphosis

19. Zebra Butterfly

20. Bee

22. Walking stick

23. Class Chilopoda Has many body segments Each segment has one pair of legs Centipedes

24. Centipede fangs

25. Class Diplopoda Each segment has two pairs of legs millipedes

27. Subphylum Chelicerata Specialized Mouth Parts: –Chelicerae Move up & down (stab) Often have fangs –Pedipalps (used to grab prey)

30. Chelicerae with Fangs Pedipalps

31. Subphylum Chelicerata Specialized Mouth Parts 2 body sections cephalothorax abdomen

33. Class Arachnida 8 Walking Legs

34. Spiders 8 Simple eyes Silk glands

35. Banana Spider

36. Crab Spider

37. Flame Tarantula

38. Tarantula Chelicerae

39. Scorpion

40. Chelicerae

41. Scorpion Chelicerae

42. Deer Tick

43. Tick under a microscope Chelicerae

44. Mite

45. Water mite

46. Class Merostomata Horseshoe Crab Only living member of this class

47. Horseshoe crab chelicerae

48. Horseshoe Crab Compound eyes Book gills

51. Many Taxonomists split the class Merostomata into two classes: Xiphosura – horseshoe crabs Eurypterida - eurypterids

52. Subphylum Crustacea 10 legs Two pair of antennae Mandibles (chewing mouthparts)

53. Blue Crab Mandibles

54. Subphylum Crustacea 10 legs Two pair of antennae Mandibles (chewing mouthparts) 2 or 3 body parts Predominantly aquatic

55. Spiny Lobster

56. Banded Coral Shrimp

58. Anemone Shrimp

60. Peterson’s Shrimp

61. Shrimp

62. Red Night Shrimp

63. Spider Crab

64. Arrow Crab

65. Star-eyed Hermit Crab

66. Decorator Crab

67. Gooseneck Barnacles

68. http://www.oceanfootage.com/video_clips/HH10_012

69. Pill Bug