Belongs to the nepalensis group; general coloration black; antennae black throughout; legs black, only the tibiae somewhat paler; wings dark brown, the costal border conspicuously bright yellow; a narrow white discal area before cord; numerous macrotrichia on outer radial veins, more restricted on distal portion of vein M1+2; Rs more than twice the length of R; R2 transverse; m-cu at or beyond midlength of lower face of cell 1st M2; abdomen black, the basal rings of the tergites broadly nacreous; hypopygium black; genital shield of female fiery orange. Male. - Length, about 13-14 mm.; wing, 11-12 mm.; antenna, 3.5 mm. Female. - Length, about 22 mm.; wing, 15.5 mm.; antenna, 5.2 mm.