They're Everywhere

What about this spotted pyralid, Nomophila nearctica? An average person much like Crumby could go through his or her entire lifetime not espying one of these, and possibly, be none the worse fer it. Yet maybe Crumby is better off now than before. Only the WG knows.

In any event, as often happens, once you espy one of these, you may espy many? But why not before now if there are so many now? Is it man-made climate change?