Sceptea decedens is a moth in the family Autostichidae.

It was described by Thomas de Grey, 6th Baron Walsingham, in 1911.

The forewings are pale ochreous, suffused and sprinkled with olivaceous fuscous, tending to become concentrated in an ill-defined streak along the fold, a spot on the middle of the cell, another at the end of the cell becoming absorbed in an indistinct oblique transverse fascia from costal to dorsal the cilia, a subterminal shade, and a few dark spots around the apex and termen.

The hindwings are brownish grey.

This article on a moth of the subfamily Symmocinae is a stub.