Delias descombesi, the Redspot Jezebel is a medium sized butterfly

Butterfly

A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

of the Family Pieridae, that is, the Yellows and Whites.

Male

Upperside : opaque white. Fore wing : costa and terminal margin very narrowly black ; extreme base, apex broadly and termen submarginally more or less thickly irrorated with black scales, the width of this blackish border decreases posteriorly along the termen. Hind wing : termen narrowly black, the black markings of the underside show dusky bluish through transparency.
Underside, fore wings : black ; an obliquely placed short broad bar along the discocellulars and a subterminal series of outwardly pointed spots, of which the anterior three lengthen into streaks, white ; the anterior and posterior margins of the cell and broad streaks, that do not reach the terminal margin, on each side of veins 1 to 4, grey. Hind wing : rich chrome-yellow ; costa and termen broadly black ; interspaces 1 to 7 with outwardly pointed, broadly triangular, yellowish-white diffuse spots on the black terminal margin, the black on the inner side of these spots produced conically inwards ; the black in interspace 7 centred with an
elongate, outwardly somewhat diffuse, oval vermilion streak.

Female

Upperside : black. Fore wing : a broad oblique apical cell-bar and a curved subterminal series of somewhat hastate spots, white. Hind wing : apical two-thirds of costa and the termen broadly black, the rest of the wing yellowish white sparsely irrorated with black scales ; the vermilion streak in interspace 8 on the underside shows through by transparency, and the broad terminal black border has a subterminal very obscurely marked series of whitish spots. Underside: fore wing as in the male but the grey bordering restricted to very narrow streaks along the median vein and veins 2 to 4. Hind wing : differs from that of the male as follows : the rich chrome-yellow replaced by dull white touched with yellow along the dorsal margin and in the cell and lightly irrorated in cell and interspaces with black scales, the inner margin of the black terminal border produced in the interspaces into more elongate cones. In both sexes : antennae black, head, thorax and abdomen above greyish ; beneath white.

Wing expanse of 83-90 mm.

Distribution

Found in Sikkim; Bhutan; Assam; Burma: Tenasserim ; extending to Siam, Cochin-China and the Malay Peninsula.