23-5-2023 SUKAU RIVER LODGE, BORNEO - BLACK AND WHITE HELEN SWALLOWTAIL BUTTERFLY (Papilio nephelus)

Papilio nephelus is a species of swallowtail butterfly belonging to the family Papilionidae. Subspecies include P. n. chaon, the yellow Helen, and P. n. sunatus, the black and white Helen.

This species can be found the Asian part of the Palaearctic realm and partially in the Australasian realm and in the Indomalayan realm, from Nepal, Sikkim, Assam, to the south of China, and from Myanmar to Thailand, Cambodia and Indonesia.

These butterflies are mainly present in the lowlands in the primary forests.