Here, it is a pair of Common Mormons mating. Found them between the bushes nearby to my house on a cloudy day. The one seen in the front is female.
Scientific name is Papilio polytes. As I had said in my previous post, it is also a swallowtail butterfly – that is, black swallowtail. See its body is black in color.It is a very usually seen butterfly in Kerala.
Another post on black swallowtail:
Black and White Striped Butterfly – Black Swallowtail