A very good question. As far as I know, the polilla is a scourge all along the coast, but I doubt they survive the cold of the highlands, but who knows. Hardy bastards. As for the jungle, they have other, more ferocious bugs to worry about. Funny story: We are doing some construction now and I bought some beams made from - I hope I get this right - "huayruro" wood. One of the beams had a few bug holes in it, and I drew this to the attention of the maestro de obras, expressing my concern, since I had expressly asked for hardwood that would not be damaged by the polillas. He laughed and reassured me that the polilla (or termite) wouldn't be able to chew into this wood for a thousand years, but the tree had been damaged by another type of bug while still standing. Now that's a chomp!