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欧洲方喙象甲（Cleonus piger Scopovi），经研究，该虫在黑龙江省牡丹江地区一年发生两代：5月中旬越冬代蛹羽化为成虫，6月上旬成虫产下第一代卵，6月下旬卵孵化为幼虫，7月下旬幼虫化蛹，8月下旬田间可见第一代成虫，9月上旬见卵，第二代幼虫始见于9月中旬，10月上旬开始化蛹，以第二代蛹在菊科植物根部越冬。幼虫为害甜叶菊等菊科植物，严重时可减产25%。
According to the study, Cleonus pigeon Scopovi has two generations a year in the Mudanjiang area of Heilongjiang Province: the overwintering pupal emerges into adults in mid-May, and the first generation of eggs will be born in early June, Late egg hatching larvae, larvae pupation in late July, the first generation of adults can be seen in the field in late August, early September saw eggs, the second generation of larvae found in mid-September, beginning in early October pupation to the second generation Pupa winters in the roots of Compositae. Larvae damage stevia and other composites, in serious cases can cut 25%.