Federick, since you asked. In my blog article, I only featured the female form-polytes which resembles the Common Rose. The other female, form-cyrus looks like the male, except that it typically has longer tails as well as a red tornal spot in space 1a on the upperside of the hindwing. Do look out for it when you are observing the Common Mormons.

Excerpt from the blog : "The female is polymorphic in Malaysia and Singapore, with the form-cyrus resembling the male but has a red tornal spot in space 1a on the upperside of the hindwing. The female form-polytes resembles the Common Rose (Pachliopta aristolochiae asteris) but her black abdomen (as opposed to the Common Rose's red abdomen) instantly gives her away."