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African nations are gearing up to battle an invasive crop pest called the fall armyworm, which has been rapidly spreading across the continent since its arrival there just over a year ago. The caterpillar has wreaked destruction on staple crops including maize (corn), millet and sorghum. Experts warn that Europe and Asia could be next.

Officials gathered for an emergency meeting—organized by the regional Africa office of the Food and Agriculture Organization (FAO) of the United Nations—in Harare, Zimbabwe, earlier this month to coordinate their response. Sixteen countries agreed to urgent plans to boost the region’s capacity to manage crop pests. “The meeting in Harare was basically aimed largely at strengthening preparedness for the countries,” says Joyce Mulila-Mitti, the FAO’s crops officer for southern Africa. Affected countries are assessing their preparedness for other new invasive pests.

Researchers are also launching studies to understand the behaviour of the pest in new environments, as well as its susceptibility to insecticides.

The fall armyworm (Spodoptera frugiperda) originates in Central and South America. It was first identified in West Africa in January 2016, and has since moved to at least 12 countries on the continent, reaching 7 of them in the past 2 months alone.

The pest is the larval form of the fall armyworm moth, and has a voracious and indiscriminate appetite—munching its way through more than 100 different plants, including leafy crops. At least 290,000 hectares of cropland across 4 countries have already been destroyed, officials reported at the Harare meeting. They cautioned that this was an underestimate and the exact figure is probably much higher.

caterpillar: n. 毛虫

wreak: v. 诉诸(武力);施行(暴力)

millet: n. 粟

sorghum: n. 高粱

armyworm: n. 粘虫

larval: adj. 幼虫的；潜在的

voracious: adj. 贪吃的

indiscriminate: adj. 不加区别的

munch： v. 用力咀嚼

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