Cicada in the genus Neotibicen
Most cicada wings resist fouling and particle adhesion due to the microscopic wax structures on their wings. The wax is hydrophobic and does not wet in contact with water. Water does not spread, but forms a tight droplet that has little contact with the surface.
The wax on the wing is not smooth but rough with small tipped projections rising from the surface. Water droplets can have less contact with rough surfaces where the droplet makes minimal contact with a…
Source: Living With Insects Blog