Sceptea decedens is a moth in the family Autostichidae. It was described by Walsingham in 1911. It is found in Mexico (Tabasco).[1]
The wingspan is about 9 mm. 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.[2]