木瓜秀粉蚧Paracoccus marginatus Williams and Granara de Willink是农作物和观赏植物的重要害虫,原产于墨西哥和中美洲,自1955年首次发现于墨西哥以来,已传播扩散至34个国家和地区。我国以前仅记录于台湾,本文从云南西双版纳佛肚树上采得,为该虫在大陆的首次发现。文中对其鉴别特征、寄主植物、地理分布、生物学和经济重要性进行了介绍。 Paracoccus marginatus Williams and Granara de Willink, an important pest of crops and ornamental plants, native to Mexico and Central America, have spread to 34 countries since they were first discovered in Mexico in 1955. Formerly, China recorded only in Taiwan. This article was collected from the Buddha’s Belly Tree in Xishuangbanna, Yunnan Province for the first time that it was discovered in mainland China. In this paper, the identification features, host plants, geographical distribution, biology and economic importance were introduced.