The fall armyworm, Spodoptera frugiperda, is a major noctuid pest in the Americas and has become invasive in Africa. This study compiled and updated records of S. frugiperda's host plants, revealing 353 larval host plant records from 76 plant families, including 106 Poaceae, 31 Asteraceae, and 31 Fabaceae. Literature review and field surveys in Brazil identified 274 existing records and 82 new ones, totaling 353. The study highlights the polyphagous nature of S. frugiperda, which feeds on a wide range of plants, including many weeds. Understanding its host plants is crucial for developing effective pest management strategies, especially in newly invaded regions like Africa. The findings provide a comprehensive list of host plants, aiding in the management of this economically significant pest. The study emphasizes the importance of accurate and updated host plant information for integrated pest management and understanding the pest's polyphagous behavior.The fall armyworm, Spodoptera frugiperda, is a major noctuid pest in the Americas and has become invasive in Africa. This study compiled and updated records of S. frugiperda's host plants, revealing 353 larval host plant records from 76 plant families, including 106 Poaceae, 31 Asteraceae, and 31 Fabaceae. Literature review and field surveys in Brazil identified 274 existing records and 82 new ones, totaling 353. The study highlights the polyphagous nature of S. frugiperda, which feeds on a wide range of plants, including many weeds. Understanding its host plants is crucial for developing effective pest management strategies, especially in newly invaded regions like Africa. The findings provide a comprehensive list of host plants, aiding in the management of this economically significant pest. The study emphasizes the importance of accurate and updated host plant information for integrated pest management and understanding the pest's polyphagous behavior.