Some give off reddish-orange light, such as Luciola kagiana; others emit yellow-orange light, like Luciola anceyi and Luciola trilucida); others shine with yellow-green light, including Luciola hydrophila, the mountain firefly (Lychnuris praetexta), Curtos obscuricolor, and the orange firefly (Diaphanes citrinus); and still others glow blue-green (Cyphonocerus sanguineus).
有的發出橙紅色光（紅胸黑翅螢）；有的是橙黃色光（大端黑螢、三節熠螢）；有的閃爍黃綠色光芒（黃胸黑翅螢、山窗螢、暗褐脈翅螢、橙螢）；有的是綠色螢光（赤翅雙櫛角螢）。