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Phylum Arthropoda-Class Insecta Monarch Butterfly Praying Mantis Fire Ant Dung Beetle Lady Bug House Fly Characteristics • 3 body segments-head, thorax and abdomen • 6 legs • 1 pair of antennae • Usually 1-2 pairs of wings • Simple brain • Have a hard exoskeleton-external skeleton, made of chitin • When skeleton gets too small, they molt Help! I’m molting, molting…oh what a world! Facts • More insect species then all other species of animal combined! • Found in nearly all environments on Earth • Been on Earth for about 400 million years • Many insects are beneficial-they help pollinate plants and some even eat other “bad” insects! Growing up Insect • All start out as eggs • Complete metamorphosis- larvae and adults of these insects are very different looking. Exbutterflies • Incomplete metamorphosis-the larvae looks like a smaller version of the adult. Exgrasshopper Complete Metamorphosis Incomplete Metamorphosis