Sensillum

A sensillum (plural sensilla) is an arthropod sensory organ protruding from the cuticle of exoskeleton, or sometimes lying within or beneath it. Sensilla appear as small hairs or pegs over an individual's body. Inside each sensilla there are two to three sensory neurons. These neurons, or receptors, gather information about environment the arthropod is in: A sensillum (plural sensilla) is an arthropod sensory organ protruding from the cuticle of exoskeleton, or sometimes lying within or beneath it. Sensilla appear as small hairs or pegs over an individual's body. Inside each sensilla there are two to three sensory neurons. These neurons, or receptors, gather information about environment the arthropod is in: