1985 Fall Armyworm Symposium: Biological Control: Geographical Distributions and Parasitization Levels for Parasitoids of the Fall Armyworm, Spodoptera Frugiperda
AbstractLiterature citations were used to determine geographical distribution data and parasitization levels from larva colections from corn, alfalfa, three species of grass, peanut, and sorghum for the principal parasitoids of the fall armyworm, Spodoptera frugiperda (J. E. Smith). The highest parasitization levels found for corn, alfalfa, grass, peanut, and sorghum were 77, 30, 54, 37, and 20%, respectively. Chelonus insularis (Cresson) had the highest parasitization rates of all the parasitoids for North and Central America. This parasitoid was not recovered from South America or the Caribbean. Cotesia marginiventris (Cresson) had approximately the same geographical distribution as C. insularis, but attained its highest parasitization levels in grass rather than corn. None of the parasitoids exerted substantial mortality throughout any major portion of the fall armyworm's range.
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