PROBLEM TO BE SOLVED: To provide a technique for rearing fireflies in surroundings similar to natural.SOLUTION: The insectary for fireflies is provided with a water channel 4 where water from a water source 1 flows in a prescribed flow rate and firefly larvae live, wherein the water flows at the flow rate of 3-30 cm/sec in the water channel 4, and the depth of the water channel 4 is 30 cm or less.COPYRIGHT: (C)2012,JPO&INPIT【課題】自然に近い形で蛍を飼育する技術を提供する。【解決手段】水源1からの水が所定流量で流れる、蛍の幼虫が生息する水路4を備え、水路4には、流速3~30cm/secの水が流れ、水路4の水深は、30cm以下である。【選択図】図1