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客家人把螢火蟲稱作「火焰蟲」，也是臺語俗稱的「火金姑」。東眼山每年於四五月會舉辦「火燄蟲傳說」活動，邀請民眾欣賞黑夜裡的螢光點點之餘，也能藉此機會觀察其他如蛙、蛇等森林居民，窺視夜間的森林生態。
事實上，螢火蟲並非只能在夏天見到，其實一年四季都是賞螢的時機，只是每一種螢火蟲喜歡的生活環境、海拔高度及成蟲發生期都有不同。像四五月份的東眼山是紅胸黑翅螢、黑翅螢、端黑螢等大量出沒的時機。
#螢火蟲的日與夜
有些民眾認為螢火蟲只在晚上出現，其實不完全正確。根據成蟲活動時間的不同，螢火蟲可分為晝行性、夜行性與晝夜行性，例如鹿野氏黑脈螢就是晝行性的。螢火蟲屬完全變態，需經歷卵、幼蟲、蛹、成蟲四個階段。其中，幼蟲是螢火蟲生命史中最長的階段，可以長達10個月，而成蟲的壽命卻只有20天左右。
#火燄蟲的光亮
螢火蟲發光的目的有很多， 成蟲發光的主要目的是溝通和求偶；而幼蟲發光則有照明和警戒作用。不同種類的螢火蟲，發光的型式不同，所以能透過不同的發光特性辨認不同種螢火蟲。像黑翅螢的螢光是偏綠色的，而大端黑螢的螢光是偏暗淡的橙色。
#希望螢光傳承
螢火蟲生存在乾淨、無污染的環境，是一種環境指標生物。由於土地過度開發、除草劑的使用、水污染、光害等人為破壞，危及螢火蟲的生存。因此，我們要珍惜並維護現有能見到螢火蟲的場域，並在欣賞牠們的同時，不打擾破壞棲地，讓這些神奇的生物能夠在地球上繼續閃耀著獨特的光芒。
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Fireflies are known as "火焰蟲" (huǒ yàn chóng) in the Hakka language and "火金姑" (huǒ jīn gū) in Taiwanese. Dongyanshan(Mountain Dongyan) holds the annual event called the "Firefly Legend" in April and May, where people can observe fireflies and other forest creatures at night and learn about the forest's ecology.
Contrary to popular belief, fireflies can be seen year-round, as different species have different habitats, altitudes, and periods of occurrence. For example, the 𝙇𝙪𝙘𝙞𝙤𝙡𝙖 𝙠𝙖𝙜𝙞𝙖𝙣𝙖 Matsumura , 𝙇𝙪𝙘𝙞𝙤𝙡𝙖 𝙘𝙚𝙧𝙖𝙩𝙖 Oliver , and 𝘼𝙗𝙨𝙘𝙤𝙣𝙙𝙞𝙩𝙖 𝙘𝙝𝙞𝙣𝙚𝙣𝙨𝙞𝙨 are abundant in April and May in Dongyanshan.
#DayAndNight
Fireflies can be divided into diurnal, nocturnal, and crepuscular based on their activity times. For example, 𝙋𝙮𝙧𝙤𝙘𝙤𝙚𝙡𝙞𝙖 𝙛𝙤𝙧𝙢𝙤𝙨𝙖𝙣𝙖 is diurnal. Fireflies undergo complete metamorphosis, with four stages: egg, larva, pupa, and adult. The larval stage is the longest, lasting up to ten months, while the adult stage lasts only around 20 days.
#Shining
Fireflies emit light for various reasons. Adults use light for communication and mating, while larvae use light for illumination and warning. Different species emit different types of light, which can be used to identify them. For example, the light of 𝙇𝙪𝙘𝙞𝙤𝙡𝙖 𝙘𝙚𝙧𝙖𝙩𝙖 Oliver is predominantly green, while the light of 𝙇𝙪𝙘𝙞𝙤𝙡𝙖 𝙥𝙧𝙖𝙚𝙪𝙨𝙩𝙖 is dim orange.
#PassHopeDown
Fireflies are an indicator species that thrive in clean, unpolluted environments. However, human activities such as land destruction, herbicide use, water pollution, and light pollution can threaten their survival. To protect these magical creatures, it is essential to preserve their habitats and refrain from disturbing them while enjoying their beauty.
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