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东北大黑鳃金龟（Ｈｏｌｏｔｒｉｃｈｉａ ｄｉｏｍ－ｐｈａｌｉａ Ｂａｔｅｓ）是黑龙江省农业和林业的重要害虫，近年来对苗圃育苗造成很大威胁，严重影响了林业生产。１ 生活史 东北大黑鳃金龟在黑龙江省东部２～３年１代，以成虫、２龄幼虫、３龄幼虫在土内越冬。越冬成虫
Holotrichia diom-phalia Bates is an important pest of agriculture and forestry in Heilongjiang Province. In recent years, Holotrichia diom-phalia Bates has posed a great threat to nursery nursery and has seriously affected forestry production. 1 life history Northeast black gills beetles in Heilongjiang Province in eastern 2 to 3 years a generation, with adult, second instar larvae, 3rd instar larvae wintering in the soil. Overwintering adult