SEM: Arachnids: Ticks: Ixodes ricinus, Leg: Ticks are blood-sucking mites. They sense their warmblooded host animals through vibrations and scent. This species of Ixodes has developed a specific organ for smelling on its leg, the Haller's Organ (upper left, inside the dent). If a host draws near, they drop from grasses and bushes on their victims, search for a warm, thin-skinned area and drill their mouth parts in to the host. The blood-sucking process can last several days, during which the tick takes up to 200 times its weight in blood. The foot also has two pillow-shaped clasping appendages that allow the tick to grip smooth surfaces. Magnification = 900x

Credit: Eye of Science / Science Source

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