新发入侵害虫——南洋臀纹粉蚧在广州的发生情况调查

Occurrence of Planococcus lilacinus (Cockerell)(Hemiptera: Pseudococcidae) in Guangzhou as a new invasive pest

南洋臀纹粉蚧作为广州一种新近发现的外来检疫性有害生物,为掌握该虫在广州发生分布情况,为其防控提供参考依据,本文首次报道了南洋臀纹粉蚧在广州市所辖11个区的发生分布、寄主种类和相关生物学特征。调查表明,该虫在广州市各区均有零星分布,主要寄主为紫荆,在秋枫、杨梅、大花紫薇和番石榴上偶有发生,该虫在寄主树上与蚂蚁具有共生关系,其传播来源可能与宫粉紫荆种苗调运有关。调查结果为该虫制定检疫防控措施提供了依据。

Planococcus lilacinus (Cockerell) as a newly found invasive mealybug in Guangzhou,Guangdong Province,it is necessary to collect information of this mealybug in distribution,feeding host plants and population dynamics used for making control decision.The occurrence,host species and related biology of P.lilacinus (Hemiptera: Pseudococcidae) were reported in Guangzhou for the first time.This mealybug was found sporadically distributed at 11 districts in Guangzhou.It mainly infests on host of Bauhinia spp.,and occasionally,it occurs on Lagerstroemia speciose ,Bischofia javanica ,Myrica rubra and Psidium guajava .The insect has symbiotic relationship with ants on the host tree,and the source of spread may be related to transferring seedlings of Bauhinia spp.Our data can provide basic evidence for strategic control of this mealybug.