Tridrepana flava, Moore

Song, Wenhui, Xue, Dayong & Han, Hongxiang, 2011, A taxonomic revision of Tridrepana Swinhoe, 1895 in China, with descriptions of three new species (Lepidoptera, Drepanidae), Zootaxa 3021, pp. 39-62 : 52

Group flava Moore

There is only one species in this species group. The hind tibia of the male bears two pairs of spurs. The double wavy postmedial lines and the submarginal line composed of grayish black lunate spots are present on the upperside of the forewing; the discal spot is visible; the posterodistal spot is a garland-shaped patch; there is a straight oblique brownish black band from apex to the inner margin on the ventral side of the forewing. In the male genitalia, the uncus is divided into two lobes, each lobe with a digitiform process and two broad lateral processes; the socii are stout; the anellus is not developed; the valva is long, tapered and arcuate; two processes are present on the basal and submedial parts of the valva; the aedeagus is slender; the cornutus is a spinose band. In the female, the ovipositor is short and narrow; two small round processes are near the ostium bursae; the signum is absent.