弟兄鳃金龟是山西省北部地区为害大秋作物的重要地下害虫之一。4年完成一代,以幼虫越冬。翌年4月中旬,幼虫开始上升,5月下旬至6月上旬,全部到达耕作层中活动为害。幼虫历经46个月后,于第4年6月中下旬老熟,在距地表18～39.5cm的土层中做土室化蛹,蛹期约40天。6月下旬至7月上旬羽化为成虫。成虫傍晚活动,交尾产卵,但不取食。 Brother Gill beetle is one of the most important underground pests that affect the autumn crops in the northern part of Shanxi Province. 4 years to complete a generation of wintering larvae. In mid-April the following year, the larvae began to rise, and from late May to early June, all the activities that reached the tillage layer were harmful. After 46 months, larvae became mature in the middle and late June of the fourth year. Soil pupation was done in the soil layer 18 ~ 39.5 cm above the ground surface, and the pupal stage was about 40 days. From late June to early July, emergence becomes adult. Adult activity in the evening, mating spawning, but not feeding.