The S-band extends obliquely from the base of cell cu1 across r-m, reaching the anterior wing margin in cell r1, then following the anterior margin to the wing apex. The V-band includes two arms which are frequently connected anteriorly to form an inverted V. The proximal arm covers crossvein dm-cu. The distal arm extends obliquely across cell r4+5 and the distal part of cell m. It is reduced or absent more frequently than the proximal arm. Distally between the S-band and V-band there is usually a hyaline area extending from the posterior margin of the wing in cells m and r4+5.