What feature distinguishes *E. sarcitrella* forewings from the Clothes Moth?

Dark, transverse markings or spots

The forewings serve as the most distinguishing visual element of the adult moth. While the general base color is pale (creamy or dirty white), it is interrupted by a pattern composed of dark, often brownish or blackish, patches or streaks arranged transversely across the surface. These darker markings, sometimes manifesting as two distinct bands, are the key differential feature when comparing *E. sarcitrella* to relatives like the common Clothes Moth, which typically displays a uniform, plain light brown or dull gold coloration lacking such defined patterning. The presence of these dark transverse markings against a pale background is fundamental to positive identification.