Stegasta postpallescens is a moth of the family Gelechiidae described by Walsingham in 1897.

It is found in the West Indies, where it has been recorded from Grenada[1] and Cuba.

The forewings are brownish fuscous, sparsely sprinkled with ochreous scales.

A creamy-ochreous dorsal streak occupies one-third the width of the wing and runs from the base through the tornal cilia.

A small creamy-ochreous costal spot lies at one-fourth from the apex, and a few pale ochreous scales are visible at the base of the brownish-fuscous terminal cilia.