When do glow warms glow??

The glow worm is not really worm at all. It is a firefly in an early stage of development called larval stage. Most adult fireflies never eat because they did all their eating when they were larvae. They hide during the daytime among the vegetation. After dark, the female climbs up the plant stems and the top of her abdomen glows. The light from the larvae’s glowing body attracts tiny flies and mosquitoes for the larvae to eat. The waitomo caves in New Zealand house a memorable type of glow worm. Tourists entering the Glowworm Grotto in small boats see thousands of lights on the cave ceiling. The glow worms look like stars in the sky. But if you cough or use a camera flash, the lights instantly go off.