A lightning bug larva crawls along a rock in Saranac Lake. This small creature, known in these younger stages as a “glowworm,” has the same luminescent organs as the adults, but instead of using its light for mate selection, for now it uses it as a warning to predators of the toxic and distasteful chemicals it carries. These larvae hunt slugs, snails and worms at night, injecting them with digestive enzymes that immobilize them and liquefy the remains. These insects can stay in larval form for up to two years as they grow, and this one is around as large as they get — three-quarters of an inch. (Enterprise photo — Aaron Cerbone)