Aquatic fireflies lay their eggs on clay mounds by the water's edge, so when concrete embankments are laid by streams and drainage ditches, suitable egg-laying spots are eliminated, hampering firefly reproduction. In Taiwan, only three such species remain: Luciola ficta, Luciola hydrophila and Luciola substriata.
將卵產在水邊土堤上的水生螢火蟲，因排水溝、河川整治時，總是鋪上水泥護岸，導致連產卵落腳的地方都沒有，當然難以繁衍，如今在台灣僅存黃緣螢、黃胸黑翅螢和條背螢 3 種。