For both males and females, the wingspan is between 23 and 26 mm. The head, palpi, antennae, thorax, abdomen, and legs are snow white. The forewings are broad, the costa strongly arched, the apex obtuse, hindmargin straight, while not oblique; white, with a faint greenish or emerald tinge between the veins; all the veins are marked at regular intervals with faint minute dark grey dots. There is a more conspicuous dark grey dot in disc beyond the middle, and a very slender indistinct dark grey hindmarginal line: cilia white. The hindwings and cilia are white. Considered a very delicate and conspicuously distinct species.[1]
^Felder, Cajetan; Rogenhofer, Alois Friedrich (1864–1867). "Reise der österreichischen Fregatte Novara". Reise der österreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. Von W (in German). pt.9:Bd.2:Abt.2 (1864-1867) Atlas: Plate CHL fig 40 – via Biodiversity Heritage Library.