The papaya mealybug (PM) is a known notorious polyphagous insect pest of many plant species and has always been found associated with a new host/s in newly invaded areas. This pest recently invaded West and Central Africa. Surveys were conducted randomly from July 2014 to May 2018 to determine the host range of this pest in the Center and Littoral regions in Cameroon. Plants infested by PM were recognized by the presence of black sooty mould, leaf deformation and/or chlorosis. A standard infestation scale was used to evaluate the infestation level on each plant. After collection, infested plants were pressed, dried and identified at the national Herbarium. A total of 52 plant species (only one undetermined) belonging to 23 families were found infested by PM associated with other mealybug or with two species of mealybugs with a percentage of (79.2%, N = 75) and (20.8%, N = 75) respectively. Two plant families (out of 23 identified) and 18 plant species (out of 52 infested) were reported as host plants for the first time. The Euphorbiaceae, Malvaceae and Solanaceae are the most infested families. In addition to plant species from its native zone (tropical America), PM has established new associations with plants from tropical Africa. Carica papaya and ten additional plants were categorized as favored hosts of P. marginatus . These results will be very useful to develop appropriate management options for PM in West and Central Africa.

中文翻译：

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喀麦隆中部和沿海地区与入侵粉蚧物种 Paracoccus marginatus Williams 和 Granara de Willink（半翅目：假球菌科）相关的新寄主植物记录

木瓜粉蚧 (PM) 是一种众所周知的臭名昭著的多种植物物种的多食性害虫，并且一直被发现与新入侵地区的新宿主有关。这种害虫最近入侵了西非和中非。调查于 2014 年 7 月至 2018 年 5 月随机进行，以确定该有害生物在喀麦隆中部和沿海地区的寄主范围。被 PM 侵染的植物通过黑色烟灰霉、叶片变形和/或萎黄病的存在来识别。使用标准侵染量表来评估每株植物的侵染水平。收集后，受感染的植物被压榨、干燥并在国家植物标本馆鉴定。共发现属于 23 个科的 52 种植物物种（只有一种未确定）被与其他粉蚧或两种粉蚧相关的 PM 侵染，百分比为（79.2%，N = 75) 和 (20.8%, N = 75)。两个植物科（在 23 个已鉴定的物种中）和 18 个植物物种（在 52 个被侵染的物种中）首次被报告为寄主植物。大戟科、锦葵科和茄科是受侵染最多的科。除了原产地（热带美洲）的植物物种外，PM 还与热带非洲的植物建立了新的联系。Carica papaya 和另外 10 种植物被归类为 P. marginatus 的有利宿主。这些结果对于开发西非和中非 PM 的适当管理方案非常有用。除了原产地（热带美洲）的植物物种外，PM 还与热带非洲的植物建立了新的联系。Carica papaya 和另外 10 种植物被归类为 P. marginatus 的有利宿主。这些结果对于开发西非和中非 PM 的适当管理方案非常有用。除了原产地（热带美洲）的植物物种外，PM 还与热带非洲的植物建立了新的联系。Carica papaya 和另外 10 种植物被归类为 P. marginatus 的有利宿主。这些结果对于开发西非和中非 PM 的适当管理方案非常有用。