Foxfly eggs glow with a soft luminescence from within. If the cracks in your walls glow slightly there is a good chance there are Foxfly eggs in there.
The light from thousands of Foxflies is a common sight on warm Leila evenings. Not only does the orb on the end of a Foxfly's tail glow, it's eyes and wings do as well. While this does make them larger targets for nocturnal predators they make up for this by being extremely fast and agile while flying helping them avoid slower predators.
Foxflies posses a trait that makes them very valuable to Leila's gardening population, they prey primarily upon Goggies.