functioning mechanism in leafhopper.jpg

Electronic systems can have bugs, Mechanical systems are based on bugs!

The gear teeth on the opposing hind-legs of a leaf hopper lock together like those in a car gear-box, ensuring almost complete synchronicity in leg movement - the legs always move within 30 'microseconds' of each other. Each gear strip in the juvenile Issus was around 400 micrometres long and had between 10 to 12 teeth, with both sides of the gear in each leg containing the same number – giving a gearing ratio of 1:1.

Read more at: http://phys.org/news/2013-09-functioning-mechanical-gears-nature.html#jCp