White breasted water hen
Looks like a Chrysomelid beetle. Compare with Aulacophora lewisii.
I think it is Tephritidae, something like Bactrocera dorsalis? The body looks like it, but the wing pattern looks different from what I’d expect.
Ah, it turns out it’s Zeugodacus cucurbitae, also in Tephritidae:
A wasp in Pompilidae, aka the spider wasps. I think I count 11 flagellomeres in the antenna, so perhaps a male; females have only 10.
Birds do it, butterflies do it. I didn’t realize they were mating until I took a closer look at the photo. They are in Pieridae.