Hyposmocoma menehune is a species of moth of the Cosmopterigidae family. It is endemic to Nihoa. The type locality is Miller Canyon. The wingspan is 7.2–7.4 mm. The larval case is burrito-shaped and 3.7–4.0 mm in length. It is similar to that of Hyposmocoma nihoa, but without the distinctly curved pointed distal end. Adults were reared from case-making larvae. Larvae were collected on the ground.