I think insect variety in that case is restricted to a few species that keep thriving due to the sudden lack of predators. Like that brown marmorated stink bug that's killing the crops.
Yeah, after hand scrubbing the "grill" of my car several times this year (the concave plastic bit that replaces a grill on lower-end Teslas), it definitely seems like a lot of flies, but I'm no entomologist.
That stink bug, along with the spotted lantern fly, were invasive species from Asia which were first discovered in the USA --- in Allentown Pennsylvania! That's right, the same place referenced in the article.
