Hyposmocoma tantala

Hyposmocoma tantala is a species of moth of the family Cosmopterigidae. It is known only from Mount Tantalus on Oahu.

The length of the forewings is 5.5 mm for males and 6.2 mm for females.

The larval case is dark brown, smooth, 9 mm in length and 2 mm wide. Adults were reared from case-making larvae collected on bark of a damp dead tree covered partially with lichen.

Etymology
The species is named tantala after Mount Tantalus, from where the type specimen was collected.