| The fall armyworn, Spodoptera furgiperda (J.E.Smith), is a new important agricultural invasive pest. Currently, S.furgiperda has invaded in Yunnan, Guangxi and Guangdong Provinces.We investigated the first larval population of the invasive adults and their damage of the pest S.furgiperda in Pearl River Delta and Northern Guangdong The results showed that S.furgiperda has caused damage in all areas mentioned above. However, the damage caused by larvae was only found on corn.The larval population and damage rate of S.furgiperda in Conghua was the highest (222 individuals per 100 corns, 80%), followed by the Lianping (98 individuals per 100 corns, 68%), Yingde (76 individuals per 100 corns, 62%), Zengcheng (66 individuals per 100 corns, 20%) and Zhuhai (46 individuals per 100 corns, 30%), Xinfeng was the lowest (6 individuals per 100 corns, 3%). The results provide a basis for monitoring the prevalence and damage of the invasive fall armyworm, which provided some support for guiding larval control in the field. |
