Abstract
The fall armyworm, a polyphagous pest is of major economic importance worldwide.This study presents a comparative analysis of the taxonomic characters of two species belonging to genus and (Noctuidae: Lepidoptera) These two Spodoptera i.e., S. frugiperda S. litura.species are re-described based on morphological taxonomic characters of adult, larval and pupal stages, as well as the male and female genitalia.is also a major pest of several economically important crops in Asia, across diverse crop ecosystems in India.Its Spodoptera litura close resemblance with in larval stages necessitates precise taxonomic identification for effective management.Photographic S. frugiperda illustrations and descriptions are provided for both species.