sentence: The noctuids Busseola fusca ( Fuller ) and Sesamia calamistis Hampson and the crambid Chilo partellus ( Swinhoe ) were considered as the economically most important pests of maize and sorghum in sub-Saharan Africa [ 1,2,3,4,5,6 ] before the recent “ invasion ” of the fall armyworm ( FAW ) , Spodoptera frugiperda ( J. E. Smith ) ( Lepidoptera , Noctuidae ) in Africa , which currently limits seriously maize yields [ 7,8 ] .