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Jumping spiders do not make webs; instead they actively hunt their prey by creeping up and then jumping on them, disabling them with their jaws (5). They are equipped with excellent eyesight, and probably have the most developed eyes of any arthropod. Four of the eight eyes are large and forward-facing giving it stereoscopic vision; the other eyes are arranged so that the spider can see completely around its own body (3). If you slowly wave a finger at a zebra spider it is likely to turn so that it has a good view. They leave a line of silk behind them in case they should lose their footing (3). In males, a pair of leg-like appendages called the pedipalps (or simply 'palps') are used to transfer sperm to females during copulation. During courtship, a male has to be very careful when approaching the female, or she may react aggressively or even mistake him for a prey species. He signals to the female with his front legs before mating. If successful, he transfers his sperm to the female's reproductive organ (the epigyne) (3).


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Source: ARKive

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