The wingspan is 18–20 mm.
The forewings are blackish-fuscous, irrorated with white.
Both the first and second line are white.
The hindwings are grey.
Adults have been recorded on wing in December.
 As a result of further study of the male genitalia, it has been argued that this species should be placed in the genus Eudonia.
Based on this as well as the wing pattern, it has also be postulated that S. illota belongs to the same species as Eudonia pachyerga.
The wingspan is 18–20 mm. The forewings are blackish-fuscous, irrorated with white. Both the first and second line are white. The hindwings are grey. Adults have been recorded on wing in December.  As a result of further study of the male genitalia, it has been argued that this species should be placed in the genus Eudonia. Based on this as well as the wing pattern, it has also be postulated that S. illota belongs to the same species as Eudonia pachyerga.
Scoparia illota