Adult double-banded grass-veneers have a wingspan of 17–22 mm. They rest with their forewings rolled tightly over their hindwings, giving them a long and slender appearance at rest. The forewings have a broad white stripe which is tapered at both ends. In some individuals, this marking may be bisected by a faint yellow stripe. 4 or 5 blacklinesextend from end of this white stripe and eventually meet a yellow-orange horizontal line near the end of the wing. The hindwings are pale gray or brown and lack markings.
C. agitatellus is found in the eastern two-thirds of the United States and south-eastern Canada. The species is most commonly found in open grassy areas such as fields and lawns.