Cyrtolobus vau is a species of treehopper belonging to the genus Cyrtolobus. It was first described by Thomas Say in 1830.

Appearance Cyrtolobus vau is a small species with adults being 5-6 millimetres. Males have a lower pronotal crest than females. Eye color ranges from grayish-brown to red.

Habitat Cyrtolobus vau is found across eastern United States. They feed on many types of oaks (Quercus), such as:

Quercus alba Quercus prinus Quercus stellata

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