A planthopper is any insect in the infraorder Fulgoromorpha, exceeding 12,500 described species worldwide. The name comes from their remarkable resemblance to leaves and other plants of their environment and from the fact that they often "hop" for quick transportation in a similar way to that of grasshoppers. However, planthoppers generally walk very slowly so as not to attract attention.
Cicada’s wings have the coolest defence mechanism—their wings are covered by pillar-like protrusions that shred bacteria to pieces. When a bacterium reaches the surface of the wing, it sticks to the surface of the pillars and its cellular membrane stretches until torn apart. The finding can be used to develop new antibacterial surfaces.