Scoparia ustimacula is a moth of the Crambidae family. It was described by Felder and Rogenhofer in 1875. It is found in New Zealand. The wingspan is about 21 mm. The forewings are bright ochreous, the costa and inner margin irrorated with black and white. The base is suffused with dark fuscous and there is a slender whitish line before the first line. This first line is white and black-margined posteriorly. the second line is also white and the subterminal line is cloudy and whitish. there is a terminal row of white dots. The hindwings are whitish-grey. The central lunule, postmedian line and hindmargin are darker grey.