无患子新发害虫--无患子小棉蚧初步研究  

Primary research on Leptopulvinaria sapinda-a new scale pest insect of Sapindus mukorossi

作　　者：韩阳阳 HAN Yangyang(Shanghai Forestry Station,Shanghai 200072,China)

机构地区：[1]上海市林业总站,上海200072

出　　处：《中国森林病虫》2020年第4期17-21,共5页Forest Pest and Disease

摘　　要：无患子小棉蚧Leptopulvinaria sapinda为我国2018年鉴定的新种,主要危害无患子Sapindus mukorossi。为有效控制该虫扩散,林间调查和室内饲养相结合研究该虫生物学特性及发生规律。结果表明:无患子小棉蚧在上海地区1 a发生2代,以卵在树干粗皮缝隙、翘皮下等隐蔽处越冬。4月中下旬越冬卵开始孵化,4月下旬至7月上旬为第1代主要危害期。6月上旬若虫开始雌雄分化,化蛹。7月上旬开始羽化,交尾,产卵。7月中旬进入产卵盛期,7月中下旬第2代卵开始孵化,7月下旬至10月上旬为第2代主要危害期。9月上旬若虫开始雌雄分化,化蛹。9月中下旬第2代若虫开始羽化、交尾、产卵,随后越冬。Leptopulvinaria sapinda,a new species identified in 2018 in China,mainly harms Sapindus mukorossi Gaertn.In order to effectively control the spread of the pest,research on biological characteristics and occurrence rules of the insect was conducted through field investigation and indoor rearing.The results showed that L.sapinda occurred two generations one year in Shanghai and overwintered as eggs in crevices of trunk’s thick bark and under the warped bark.The overwintering eggs began to hatch in the middle and late of April,and the first generation mainly damaged from late April to early July.In early June,the nymphs began to show male and female differentiation and pupation.Eclosion,copulation and spawning occurred in early July.Mid July was the peak period of oviposition.In the middle and late July,the second-generation eggs began to hatch,and late July to early October was the main period of damage for the second generation.In early September,the nymphs began to show male and female differentiation and pupation.In mid-late September,the second generation of nymphs began to emerge,mate,lay eggs,and then overwinter.

关 键 词：无患子小棉蚧 危害情况 生活史 发生规律 

分 类 号：S763.35[农业科学—森林保护学]