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红点唇瓢虫Chilocorus kuwanae Silvestri在上海普遍存在,其成虫和幼虫能捕食桑白盾蚧、夹竹桃圆蚧(常春籐圆蚧)、椰圆蚧、紫牡蛎蚧、拟褐圆蚧、日本长白蚧等多种盾蚧。还能捕食紫薇绒蚧、吹绵蚧和桔绵蚧。现将其一些生物学特性简报如下。生活史该虫在上海一年发生3～4代,从第二代起有世代重叠现象。以成虫在树皮裂缝等处越冬。第一代发生在4月下旬至7月中旬,第二代在6月中旬至8月上旬,第三代在7月上旬至9月,第四代在8月至10月。11月进入冬眠。据1979年8月中旬至
Chilocorus kuwanae Silvestri is prevalent in Shanghai. Its adult and larvae can prey on Sangna rhamnoides, Ophiopogon japonicus (Ivy hesperus), Coccinella septempunctata, Oyster oyster scale, Long white scale and other shield Gekko. But also preying on crape myrtle scales, blowing cotton Kuwana and orange mealybug. Now some of its biological characteristics are as follows. Life history The worm occurs in Shanghai for 3 to 4 generations a year, from the second generation generations overlap. To adults in the bark cracks and other winter. The first generation took place from late April to mid July, the second generation from mid June to early August, the third generation from early July to September and the fourth generation from August to October. November into hibernation. According to 1979 August to mid