According to an October 25, 2008, Quirks and Quarks podcast, pine cones give off infrared heat. When viewed with infrared technology, or as “seen” by a particular kind of beetle, the cones actually glow. The beetle that is the subject of the podcast does not actually see the infrared with its eyes, as far as scientists can tell, but it has special sensors on its abdomen that allow it to sense the heat from a great distance, with an acuity that is probably as good as insect vision.
So maybe the Christmas tree lights used to decorate trees during the holidays aren’t so far off after all. They are somewhat cone-shaped. To beetles they may seem perfectly natural!
very interesting! I had my dad listen to it as he loves nature news like that.