Each autumn the world seems aglow with foliage and jack-o-lanterns. But they’re not the only glowing things lighting up this season. Fall is also a great time to spot the crawling, glow-in-the-dark stage that all juvenile fireflies pass through.
Hatched from eggs laid during summer months, these firefly larvae can now be seen crawling along roadsides or wooded paths, glowing dimly from two tiny lanterns. Photuris and Pyractomena larvae are the two types seen most often in the U.S. But one reader in Portland, Oregon even spotted the much rarer Douglas fir glow-worm, Pterotus, along a path in Mt. Tabor Park. Continue reading