Male has the upper forewing with inner margin of the black area on apex and termen not smoothly curved but sinuate (curved); an elongate narrow black spot, sometimes faint and ill defined but always traceable, in interspace 3.
Male has the upper forewing with a roughened inner margin of the black area at the apex and termen; an elongated, narrow black spot in interspace 3 that may appear faint or unclear but is always recognizable.