Alex, I think that caterpillar/moth is pretty widespread, but also, if there is one eating spearmint in my region there is likely another similar one in yours, if not the same one.
LOL! I have no idea if what I wrote makes sense. I think I am trying to speak of ecological niches. In other words, somebody has to do it?
That's a real interesting observation you made, about which parts of the plant the different ones eat. Cool!
