One of the paired anterior appendicular sensory organs of the insect head. In adult mosquitoes, consisting of a narrow ring-like basal segment (scape), a second globular and cup-shaped segment (pedicel) and a third segment (flagellum) comprised of a series of 13 or 14 flagellomeres. In mosquito larvae, inserted anterolaterally; consisting of a narrow ring-like scape, which is often united with a large distal part, the fused pedicel and flagellum. In mosquito pupae, curved upward and backward over the side of the thorax beneath the lower edge of the wing.
General: antenna