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Anatomy of a Wolf Spider

All spiders have in common a two-segmented body, eight legs, spinnerets and the absence of chewing mouthparts or wings. The eight non-compound eyes of the wolf spider arranged neatly in three lines of two.

Chelicerae, or jaws, are used to hold prey, inject venom and eat. The chelicerae of the wolf spider resemble pink ovals. Two sharp, horizontal fangs are present at the extreme bottom of these jaws. Also present near the jaw are the palps, which serve as sperm storage in the male wolf spider.

The circulatory system of the wolf spider is open and contains haemolymph, a respiratory protein similar in function to hemoglobin. Haemolymph is pumped through the arteries by the heart and is carried into spaces known as sinuses, which surround internal organs. 

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