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Middle body region of an arthropod consisting of three fused main segments that may bear legs and wings. Thorax
Posterior body region of an arthropod that contains fused segments, digestive structures, and reproductive organs. Abdomen
The structure formed from the thorax region fused with the head. Cephalothorax
A structure such as a leg or an antenna that grows and extends from the outside body covering. Appendage
The periodic shedding of the protective exoskeleton so their bodies can continue to grow. Molting
One of a pair of mouth-parts adapted for biting and chewing food Mandible
One of a system of tubes that branch into smaller tubules and carry oxygen throughout the body. Tracheal tube
In spider and some other arthropods, the respiratory structure with highly folded walls whose membranes look like book pages. Book lung
Opening in the arthropod body through which air enters and waste gases leave. Spiracle
The waste-excreting structure that also helps maintain homeostatic water balance. Malpighian tubule
Chemical secreted by an animal species to influence the behavior of other members of the same species. Pheromone
In most crustaceans, the first pair of legs, which has large claws to trap and crush food. Cheliped
Crustacean appendage used as a flipper during swimming. Swimmeret
One of a pair of arachnid appendages modified to function as fangs or pincers. Chelicera
One of a pair of arachnid appendages used for sensing and holding prey and in male spiders used for reproduction. Pedipalp
In spider, the structure that spins silk from a fluid protein secreted by their glands. Spinneret
In most insects, the series of changes from a larval form to an adult form. Metamorphosis
Non-feeding stage of complete metamorphosis in which the insects changes from the larval form to the adult form. Pupa
The immature form of insects that look like small adults without fully developed wing. Nymph
A group of individuals within a society that perform specific tasks. Caste
Created by: jessc14
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