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external skeleton that protects the animal from its environment and other pray. like a shell


a animal that doesn't have a back bone


legs or antennae that grow out of the body of an animal. they are used for sensing, walking, feeding, and mating.


shedding the exoskeleton and secreting a larger one

head, thorax, abdomen (main body segmentation)

the main body segments of most animals, top, middle, end


head and thorax fused into one segment, like spiders

tracheal tubes

branching network of hollow tubes that carry air throughout the body


openings on the thorax and abdomen that connect to the tubes


a sharp digging structure on the tip of the abdomen used for depositing eggs into plant structures


the transformation of a larva into an adult

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