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

Hyposmocoma papahanau
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Cosmopterigidae
Genus: Hyposmocoma
Species:
H. papahanau
Binomial name
Hyposmocoma papahanau
Schmitz and Rubinoff, 2009

The wingspan is about 8.8 mm.

The larval case is burrito-shaped and 4.5–8.7 mm in length. It is similar to that of Hyposmocoma nihoa.

Adults were reared from case-making larvae. Larvae were collected on the ground.

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