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Synchronized and powerful legs
The six legs of the gray cicada (Cicada orni) are covered with hair and ended by claws that allow the female to cling to the plant stems in which she lays her eggs and the male to the bark of tall trees to cymbalize. During the larva's underground life, they work in perfect synchrony: the two front legs dig, excavate, and unseal while the middle ones provide support for the cicada and clean the gallery. Very mobile and orientable in all directions, the front legs sweep the rubbles towards the hind limbs, which push them outwards, behind the cicada.
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