Papilio polytes, the common Mormon, is a common species of swallowtail butterfly widely distributed across Asia. This butterfly is known for the mimicry displayed by the numerous forms of its females which mimic inedible red-bodied swallowtails, such as the common rose and the crimson rose. Names The common name is an allusion to the polygamy formerly practiced by members of the Mormon sect according to Harish Gaonkar, of the Natural History Museum in London: The scientific name is constructed from the Latin word for butterfly, papilio, and the Greek word for many, poly. Range Pakistan, India, Bangladesh, Nepal, Sri Lanka, Maldives, Myanmar, Thailand, Singapore, southern and western China (including Hainan and Guangdong provinces), Taiwan, Hong Kong, Japan (Ryukyu Islands), Vietnam, Laos, Cambodia, Andamans, Nicobars, eastern and Peninsular Malaysia, Brunei, Indonesia (except Moluccas and Irian Jaya), Philippines, and Northern Marianas (Saipan). Status Very common. Not threatened. Description Jet black butterfly with row of white spots along the middle part of hindwing. 90–100 mm. Male The male has one morph. It is a dark-coloured swallow-tailed butterfly. The upper forewing has a series of white spots decreasing in size towards the apex. The upper hindwing has a complete discal band of elongated white spots. It may or may not have marginal red crescents. The males are generally smaller in size than the females but not always. Both male and all forms of the female of P. polytes can vary considerably in size depending on climatic region. Female The female of the common Mormon is polymorphic. In the Indian Subcontinent, it has several forms or morphs. These are as follows: Form cyrus This form is similar to the male, differing in that it always has strongly marked red crescents. It is the least common of the three forms. It is normally abundant where the common rose or crimson rose do not occur, such as in Himachal Pradesh around Shimla; although a few specimens of form romulus have also been caught alongside. Form stichius This female form of the common Mormon mimics the common rose very closely. This is the commonest form wherever the common rose flies. Form romulus This female form mimics the crimson rose and is common over its range. It is not such a close mimic as the previous form being duller than its model. It is easy to differentiate the mimics from models by the colour of their body—the models are