2.1 Sample preparation Insect cuticle performs crucial functions such as mechanical protection, morphological definition, and waterproofing, serving as an exoskeleton.19 Cicada wings are an extension of the cuticular exoskeleton, featuring a network of veins that provides rigid structural support, with α $\alpha$ -chitin, protein, and lipids as their main chemical components.20 In this study, cicada wings from the species Carineta fasciculata were extracted from deceased insects and subjected...
