The Oahu aulu thyrocopa moth (Thyrocopa sapindiella) is a moth of the Xyloryctidae family. It is endemic to the Hawaiian island of Oahu. It is possibly extinct. The length of the forewings is about 9 mm. Adults are on wing at least in November. The ground color of the forewings is very light whitish-brown, with a few brown scales scattered throughout. The discal area has one very small, faint brownish spot in the cell. The hindwings are very light whitish-brown. The pupa is about 9 mm and medium brown. The pupa is formed within the spun-together leaves where the caterpillar fed.