Dirunal fireflies mating

Lampyridae is a family of insects in the beetle order Coleoptera. They are winged beetles, and commonly called fireflies or lightning bugs for their conspicuous crepuscular use of bioluminescence to attract mates or prey. Fireflies produce a "cold light", with no infrared or ultraviolet frequencies. The most commonly known fireflies are nocturnal, although there are numerous species that are diurnal. Most diurnal species are nonluminescent; however, some species that remain in shadowy areas may produce light.