scent sensilla

The term "scent sensilla" refers to sensory structures in arthropods, particularly insects, that are involved in detecting chemical stimuli, akin to taste and smell in humans. These sensilla are typically hairlike extensions of the cuticle that enclose the nerve endings of receptor cells.12

There are two main types of sensilla based on their pores: uniporous, with a single pore at the tip, and multiporous, with many small pores scattered over the surface. Uniporous sensilla are generally associated with taste, while multiporous sensilla are linked to olfaction (smell).1

These structures allow insects to detect a wide range of chemicals, including food sources, pheromones, and environmental cues like carbon dioxide. The sensitivity and specificity of these sensilla are crucial for various behaviors, such as finding food, mates, and host plants. While some hair sensilla might vibrate in response to sound, their primary function is likely tactile, with sound reception being incidental.123