Here's a very native orange sulphur (Colias eurytheme) feeding on a very exotic and very invasive border privit (Ligustrum obtusifoium).
I would be irresponsible to plant this privet today (this specimen is probably 50 years old), but you can't say native species don't know what to do with it simply because they didn't evolve together.
Orange sulphur feeding on a privet alongside the Hudson River Greenway