Great Helen Swallowtail

P. iswara. Very similar to P. helenus. Palpi entirely white; the white area of the hindwing consists of 4 patches, of which the 3rd is the largest; the area in the male smaller beneath than above, with the exception of the 4th spot, which is larger beneath, between it and the red anal eye-spot in the female two more white spots, of which at least the upper one is also distinct in the mostly only 2 red submarginal spots present, both large, usually forming a ring-spot with the marginal spots, before the anal submarginal spot no red discal spot as in P. helenus, but always 3 blue lunules. The disc of the upper surface of the forewing in the with pilose hairs. The female paler than the male, the red submarginal spots larger on both surfaces. The genitalia similar to those of P. helenus, the harpe of the more spoon-shaped and the infra-anal processes shorter. Like P. helenus occurring in wooded districts, principally in the hills. The early stages not known. Distributed from South Tenasserim to Sumatra and Borneo; only locally plentiful. -— iswara White (21 c). The white area of the hindwing posteriorly broad; the yellow-red spots of the underside of the hindwing large, the anterior ring-spot also in the male entire, the black pupils of both the eye-spots in the female small. Lower Tenasserim, Malay Peninsula, Penang, Sumatra, Banka. …