Description Pycnophallium elna

upperside: black; medial broad oblique white band across both forewings , hindwings broadening on latter, on forewing extends further towards costa in female in male , in specimens, both male , female, produced outwards above vein three.

at jayanti in buxa tiger reserve in jalpaiguri district of west bengal, india

underside: white following black markings: broad band, broader in of other forms, base of hindwing produced obliquely across forewing far discocellular veinlets, thence bent @ right angles , extended costal margin; beyond discal markings on both forewings , hindwings in pycnophallium roxus, terminal markings narrow , more or less obsolescent, apex of forewing however, more broadly black, while subterminal line of linear white spots on same wing , transverse subterminal series of black lunules on hindwing more or less obsolescent. antennae, head, thorax , abdomen black; beneath: shafts of antennae speckled white, palpi, thorax , abdomen longitudinal medial white line, sides of abdomen barred white.