Culex annulirostris, commonly known as the common banded mosquito, is an insect native to Australia, Fiji, Micronesia, the Philippines and Indonesia. It is regarded as a serious pest species throughout its range. Frederick Askew Skuse described the species in 1889 from specimens collected in the Blue Mountains and Berowra. The species name is derived from the Latin words annulus "ring" and rostrum "bill". The female is a moderate-sized brown to dark brown mosquito, with a single pale prominent broad band on the middle third of its proboscis, and similar bands on its legs.