Cicada slough is hollow and slightly curved like cicada. It is about 3.5cm long and 2cm wide. Yellow brown surface, translucent, shiny. The head has a pair of filamentous antennae, most of which have been broken off, prominent compound eyes, prominent neck tip, developed muzzle, wide and short upper lip, elongated lower lip into a tube. Chest back is a cruciform slice, the cleft curls inward, both sides of the back with small wings 2 pairs. It can be used as food additives and nutritious supplements.