Hyposmocoma lupella is a species of moth of the family Cosmopterigidae. It was first described by Lord Walsingham in 1907. It is endemic to the Hawaiian island of Kauai. Examples have been collected at Kaholuamano, at an altitude of .
The moth's food source is unknown, but the larvae are expected to be found on dead wood and are presumed to be case-makers.
. Elwood Zimmerman . 1978 . Insects of Hawaii . 9 Microlepidoptera . The University Press of Hawaii, Honolulu. 10125/7338 .