Problem to be solved: to provide a method capable of stably supplying a high quality winter worm insect body substance.Inoculated with the host insectThe mycelium formation process that forms the mycelium by growing the Cordyceps species in the body of the host insectTo the host insect in which the mycelium was formedA monochromatic light having a peak in the wavelength range of 400-500 NMA monochromatic light having a peak in the wavelength range from 600 to 700 nmA light irradiation step of irradiating either one or both of themA fruiting body forming process in which the host insect is cultured after the light irradiation step to form the fruiting body of the winter wormA method of producing the Cordyceps species.Diagram【課題】高品質の冬虫夏草子実体を安定して供給することができる方法を提供する。【解決手段】宿主昆虫に冬虫夏草菌の菌種を接種し、前記宿主昆虫の体内で冬虫夏草菌を増殖させて菌糸体を形成する菌糸体形成工程と、菌糸体が形成された前記宿主昆虫に、４００～５００ｎｍの波長域にピークを持つ単色光、及び６００～７００ｎｍの波長域にピークを持つ単色光、のいずれか一方又は両方を照射する光照射工程と、光照射工程後の前記宿主昆虫を培養して冬虫夏草の子実体を形成させる子実体形成工程と、を含む冬虫夏草子実体の生産方法。【選択図】図２
