PROBLEM TO BE SOLVED: To provide a pest control material using filamentous fungi, which has improved long-term storage stability and pest control effect. SOLUTION: The pest control material containing an insect parasitic filamentous fungus grown on a solid carrier, and the number of spores of the insect parasitic filamentous fungus on the surface layer is 1.0 × 106 to 1.0 × 10 10 cells / cm2. A characteristic pest control material. [Selection diagram] None【課題】長期保存安定性及び害虫防除効果を向上させた、糸状菌を利用した害虫防除資材の提供。【解決手段】固体担体上に生育させた昆虫寄生糸状菌を含む害虫防除資材であって、表層における前記昆虫寄生糸状菌の胞子菌数が1.0×106~1.0×1010個/cm2であることを特徴とする、害虫防除資材。【選択図】なし