一、形态特征白星金龟子的成虫体长20mm左右,宽10-14mm。头近方形,赤褐色。前胸背板及鞘翅上有十几个不规则的白色斑点。二、发生规律白星金龟子每年发生一代,以幼虫在土壤中越冬,其潜伏的深度与土壤活上层厚度有关,幼虫多潜伏在活土层和粪土堆里,取食土壤中腐烂的有机体,一般很少咬食活体植物根系,所以幼虫在土壤中也不易被发现。幼虫老熟后吐黏液做椭圆形士室,在土室内一周左右化蛹,蛹期一个月,成虫羽化后在土室内滞留7-10天即破土而出,危害嫩芽和果实。一般年份从6月初到9月上旬均有成虫出现,成虫出现期长达3个月,但在各种果实近成熟期受害最重,成虫发生量也最 First, morphological characteristics White beetle adult body length 20mm, width 10-14mm. Head nearly square, auburn. There are more than a dozen irregular white spots on the thoracodorsal and coxswains. Second, the occurrence of white star beetle a generation a year to the larvae in the winter soil, the depth of its latent depth of the living layer and the soil, the larvae more latent live in the soil layer and the heap, feeding soil rot organisms, Less bite live plant roots, so larvae in the soil is not easy to be found. Larvae cooked spit mucus oval-shaped room, about a week in the soil pupation, pupal period of one month, the emergence of adults in the soil 7-10 days after the residence that broke ground, endangering shoots and fruits. Adult years from early June to early September all adult worms, adult emergence period of up to 3 months, but in a variety of fruit near the maturity of the hardest hit, adult occurrence is also the most