Drasteria scrupulosa has forewing length of 18-21 mm which is characterized as light grey in color, and its adults have been recorded on wing in July and August in California,  the most populated subnational entity in America.
The length of the forewings is 1821 mm. The forewings are light grey, with variable darker brown grey near the reniform and distal to the postmedial line. Adults have been recorded on wing in July and August in California. California is also the most populated subnational entity in North America, and has its state capital in Sacramento. 
