Gear mechanism in natural world Gear

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issus coleoptratus



a functioning gear mechanism discovered in issus coleoptratus, planthopper species common in europe


the gear mechanism considered exclusively artificial, in 2013, scientists university of cambridge announced discovery juvenile form of common insect issus (species issus coleoptratus), found in many european gardens, has gear-like mechanism in hind legs. each leg has joints form 2 180° helix-shaped strips 12 interlocking spur-type gear teeth, including filleted curves @ base of each tooth reduce risk of shearing. joint rotates mechanical gears , synchronizes issus s legs when jumps.









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