Stenopsestis bruna is a moth in the Drepanidae family. It was described by Jiang, Yang, Xue and Han in 2015. It is found in China (Hubei, Hunan). The length of the forewings is 20–21 mm. The forewings are dark brown with blackish brown transverse lines and a dark grey dot basally. The basal half and area outside the postmedial line are diffused with reddish-brown scales. The antemedial line is double and the inner line indistinct. The area between the inner antemedial line and the postmedial line is pale grey, suffused with dark grey scales on the upper part. The hindwings have indistinct transverse lines.