Peak firefly season runs from mid-June through July. Just let them go when you’ve finished looking at them,” said Edwards. Photograph: Nori Yuasa/Getty Images The Observer Conservation Why the lights are going out for fireflies Fireflies face a dim future. “I would never discourage anyone from catching them and putting them in a jar. Fireflies in a cedar forest in Tamba, Hyogo Prefecture, Japan. He said it’s ok to catch fireflies, on one condition: “They prefer longer grass and they like to be in the leaf litter from the leaves that have fallen from last year,” Edwards said, “That will make a much better firefly habitat.” Fireflies or lightning bugs thrive in meadows, woods, and along bodies of water, all of which are shrinking because of our sprawl. Since the majority of firefly species utilize bioluminescent courtship signals, they are also. And the way they do that is by opening up little holes on the side of their body that lets oxygen in.”Īnother way to help, he said, is to planting trees and native grasses, and to allow log and leaf litter to accumulate. Light pollution is an especially concerning threat to fireflies. It’s like the reaction you get in glow sticks,” he said, “So you see them flash, they turn the light on and off. This is mostly due to the loss of habitat for one reason or. “It is a chemical reaction that produces light, but doesn’t make any heat. The IUCN estimates that 14 of firefly species are either threatened or endangered of extinction. He explained that the glowing light produced by fireflies, called bioluminescence, comes from their lantern-like organs. People can help with firefly conservation by avoiding pesticides, he said, and turning off outdoor lights, which confuse the bugs’ mating habits.
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