Hyposmocoma nihoa

Hyposmocoma nihoa is a species of moth of the family Cosmopterigidae. It is endemic to Nihoa, Northwestern Hawaiian Islands. The type locality is Miller Canyon.

The wingspan is 6.3–7.6 mm.

The larval case is burrito-shaped and 3.4–4.8 mm in length.

Adults were reared from case-making larvae. Larvae were collected on small bushes and rocks.