Pulvilli are soft, cushionlike pads on the feet of insects and other arthropods, such as the housefly and ixodid ticks. They are located at the base of the claws (#2 in the figure at right).
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The pulvilli function as an adhesive system. Their sticking power comes partly from Van der Waals force, and partly from an adhesive fluid secreted from the extremities onto surfaces.
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