Fall Armyworm
developing larvae eat different parts of the host plant, depending on the crop, the stage of crop development, and the age of the larvae. On maize, young larvae [...] been found in Africa too. The caterpillars of fall armyworms feed on the leaves, stems and reproductive parts of more than 100 plant species causing major [...] characteristic windowing effect. This damage and moist sawdust-like frass near the funnel and upper leaves can be an easily spotted sign of larval feeding. After