STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Moth antenna. Coloured scanning electron micrograph (SEM) of part of the antenna of a moth (order Lepidoptera). The antenna is a sensory structure. It is covered in sensory scales and hairs (red). The sensory structures are called sensilla and are loosely anchored in holes in the main part of the antenna (yellow). Air movements move the scales and this is felt by the moth, allowing it to use its antenna to sense movement. Different sensilla can detect things like smell, temperature, and sounds.
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