1. Arthropods are a phylum of joint-legged invertebrate animals including insects, arachnids, crustaceans and others. 2. They have segmented bodies, jointed appendages, a hard exoskeleton and molt to grow. 3. Major groups include insects, arachnids like spiders and scorpions, crustaceans like crabs and lobsters, and extinct trilobites.

1. Gk. “arthros” – joint + “podos” – foot ARTHROPODA

2. VARIETY

3. Hermit Crab Fairy Shrimp Centipede Horseshoe Crab

5. Size Color Shape Method of Movement

6. Jointed Legs Exoskeleton Segmented Body Distinct Head Compound Eyes (most cases)

17. CLASS INSECTA Ants, Beetles and Bugs ORDER HYMENOPTERA Fire ant Solenopsis invicta ORDER ORTHOPTERA Migrating locust Locusta migratoria ORDER COLEOPTERA Weevil Beetle

18. MAJOR PARTS OF AN INSECT

19. Insects that have piercing and sucking mouthparts are called BUGS while BEETLES are insects distinguished as those having forewings modified into hard wing cases that cover and protect the hind wings and abdomen!

20. CLASS ARACHNIDA Spiders, Ticks and Scorpions Wolf spider Lycosa tarentula

21. The Goliath Bird-eating tarantula ( Theraphosa blondi) But can grow as much as 1 ft in diameter!

22. CLASS MEROSTOMATA Horseshoe crabs

23. CLASS CHILOPODA Centipedes Peruvian Giant

24. CLASS DIPLOPODA Millipedes Harpaphe haydeniana

25. CLASS TRILOBITA Trilobites

26. LIFE CYCLES OF SOME INSECTS

27. LIFE CYCLE OF A DRAGONFLY (CLASS INSECTA ORDER ODONATA)

28. LIFE CYCLE OF A FRUIT FLY (CLASS INSECTA ORDER DIPTERA)

29. LIFE CYCLE OF A BUTTERFLY (CLASS INSECTA ORDER LEPIDOPTERA) (Larva) Caterpillar (Pupa) Chrysalis

30. LIFE CYCLE OF A GRASSHOPPER (CLASS INSECTA ORDER ORTHOPTERA)

31. MIMICRY AND CAMOUFLAGE Mimicry - take on the appearance of (another animal or plant) in order to deter predators Camouflage - the natural coloring or form of an animal which enables it to blend in with its surroundings