This inscent is a treehoppper or thorn bug (Membracidae). They belong to the Auchenorrhyncha.
Membracidae have a distinct transformed and enlarged (sometimes larger than the body itself) pronotum that often forms unusual structures - such as the "mowhak" on the photo or horns as the buffalo treehopper. These unusual shapes are thought to be camouflage or mimicry. Besides, their body shape is typical for planthoppers: an inclined head, their "rooftop" wings, a proboscis to suck plant sap, short antenna and relatively short, but powerful jumping legs.