A species of Phoebis? Doesn't look like a Catopsilia with those reddish colors.
Could also be, but the underside of this butterfly looks very much like a Catopsilia florella, so I thought that that could be the correct species.
Catopsilia florella seems to be yellower, but I don't know if your photo is darker than the real colour of the specimen.
no, this are the real collors. So as you can see the underside of the wings are a bit orange...
Greetings Wessel Herrewijnen