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|Noun||1.||Spodoptera frugiperda - larva of a migratory American noctuid moth; destroys grasses and small grains|
caterpillar - a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth
|2.||Spodoptera frugiperda - moth whose larvae are fall armyworms|
noctuid, noctuid moth, owlet moth - usually dull-colored medium-sized nocturnal moth; the usually smooth-bodied larvae are destructive agricultural pests