Movie S1.

(Left) The reaction of a hair to a localized electric field generated by applying an AC voltage (400 V Sin wave, 1 Hz) to a needle 2 mm away from a body hair. Electric fields can produce visible motion in body hairs of a bumblebee. (Right) The reaction of a hair to a localized electric field generated by applying an AC voltage (400 V Square wave, 1 Hz) to a needle 2 mm away from a body hair. Electric fields can produce visible motion in body hairs of a bumblebee.