وهذا ضروري جداً لان قطرات الماء ان تجمعت على سطح مستو .. سوف تكتسب مرونة حركية .. ويعني هذا ان الماء قد يتحرك ويمكنه ان يسقط من ظهر غلاف الخنفسة
And the effect of this is that as the droplets start to form on the bumps, they stay in tight, spherical beads, which means they're much more mobile than they would be if it was just a film of water over the whole beetle's shell.