Hyposmocoma malornata is a species of moth of the family Cosmopterigidae. It was first described by Lord Walsingham in 1907. It is endemic to the Hawaiian islands of Necker, Nihoa, Kauai, Oahu, Molokai, Maui and Hawaii. The type locality is Olinda, where it was collected at an elevation of 4000feet.
The larva is probably a case-maker, and it may feed on lichen.
. Elwood Zimmerman . 1978 . Insects of Hawaii . 9 Microlepidoptera . The University Press of Hawaii, Honolulu. 10125/7338 .