Morphology and Distribution of Antennal Sensilla on Spodoptera frugiperda (Lepidoptera: Noctuidae) Larvae and Adults

The invasive pest, Spodoptera frugiperda, commonly known as the fall armyworm (FAW), is a serious threat to food security in multiple countries worldwide. Insects’ antennal sensilla play crucial role perceiving plant odors and communication between male female insects. This study aimed examine morphology variations on antennae of FAW larvae adults through scanning electron microscope analysis. results revealed that third fifth instar larval possessed smell pores, pegs, five types sensilla, namely trichodea, basiconica, chaetica, campaniform, styloconicum, pores were first observed Lepidoptera larvae. Furthermore, size was significantly greater than those instar. On adult antennae, there 12 identified: basicaonica, auricillica, cavity, placodea, ligulate, Böhm’s bristles, squamous, coeloconica, uniporous peg. Notably, peg, discovered adults. Compared with larvae, have more amounts sensilla. Additionally, we also discussed possible functions these provides valuable information for comprehensive understanding type function assists development novel pest control strategies, such behavior technology, prevention this pest.