Description from
Charles Thomas Bingham (1907)
The Fauna of British India, Including Ceylon and Burma, Butterflies. Volume II. Male and female. Differs from
Troides helena cerberus as follows. • Male: Hindwing: the black along the dorsal and terminal margins both on upper and undersides much broader; on the upperside entirely filling interspace 1, on the underside with only a narrow streak of yellow at the angle between the median vein and vein 2; the cone-shaped black markings on the terminal margin shorter and broader; on the costal margin the black is narrower than in
cerberus, barely extended below vein 8 except at the base and apex of the wing where it broadens; the abdomen is dull yellow above and below not shaded with black. • Female: Hindwing: the black on the costal margin as in
cerberus, but there is always a large yellow spot at base of interspace 7; interspace 1 black, with a pale patch in the middle; the black terminal border broader, the inwardly extended cone-shaped markings prominent, those in interspaces 2 and 3 with pale buff lateral edgings, extended inwards to the postdiscal spots. In both male and female the hindwing on the upperside is clothed with soft, silky, long brownish-black hairs from base along the dorsal area. ==Range==