What is an Arthropod?10 -- What is an Insect? 12 -- What is an Arachnid? 16 -- What is a Crustacean? 18 -- What is a Myriapod? 19 -- Life Cycle 20 -- Sensory System 24 -- Food and Feeding 26 -- Arthropod Behavior 28 -- Social Insects 30 -- Habitats 32 -- Studying Insects 34 -- Identification Key 36 -- Insects 46 -- Bristletails 46 -- Silverfish 47 -- Mayflies 48 -- Damselflies and Dragonflies 51 -- Stoneflies 56 -- Rock Crawlers 59 -- Crickets and Grasshoppers 60 -- Stick and Leaf Insects 66 -- Earwigs 69 -- Mantids 71 -- Cockroaches 74 -- Web-spinners 77 -- Termites 78 -- Angel Insects 80 -- Barklice and Booklice 81 -- Parasitic Lice 83 -- Bugs 85 -- Thrips 101 -- Alderflies and Dobsonflies 103 -- Snakeflies 104 -- Antlions, Lacewings, and their Relatives 105 -- Beetles 109 -- Strepsipterans 132 -- Scorpionflies 133 -- Fleas 135 -- Two-winged Flies 136 -- Caddisflies 156 -- Moths and Butterflies 158 -- Bees, Wasps, Ants, and Sawflies 178 -- Noninsect Hexapods 207 -- Springtails 207 -- Proturans 210 -- Diplurans 211 -- Crustaceans 212 -- Isopods 212 -- Arachnids 213 -- Scorpions 213 -- Pseudoscorpions 215 -- Sun-spiders 217 -- Whip-scorpions 219 -- Whip-spiders 220 -- Harvestmen 221 -- Ticks and Mites 223 -- Spiders 228 -- Myriapods 238 -- Pauropods 238 -- Symphylans 239 -- Centipedes 240 -- Millipedes 242.