Hyposmocoma nipholoncha is a species of moth of the family Cosmopterigidae. It was first described by Edward Meyrick in 1935. It is endemic to the Hawaiian island of Oahu. The type locality is Mount Tantalus.
The larvae feed on Euphorbia species. The naked larvae are stem-borers.
. Elwood Zimmerman . 1978 . Insects of Hawaii . 9 Microlepidoptera . The University Press of Hawaii, Honolulu. 10125/7338 .