Treehoppers Are Strange Creatures

Membracids, related to cicadas, are in the class Insecta, the order Hemiptera (“true bugs”) and the family Membracidae. Like aphids, which are also “true bugs,” adult and immature treehoppers feed on plant sap....but wtf is that on their heads??According to Biologists, "the hollow globes & spines, probably deter predators. It would be hard to grab, much less chow down on, a beast with all those