Do Fireflies Have Antennae?
Do Fireflies Have Antennae? Do fireflies have antennae? Firefly eyes grow bigger, more bug-like, as the insects’ light organs enlarge. Their antennae, used like a nose to follow pheromones, shrink into stubs. What is the difference between a firefly and a lightning bug? Fireflies and lightning bugs are the same insect, and are actually beetles.