Cyrtolobus fuscipennis is a species of treehopper belonging to the genus Cyrtolobus. It was first described by the American entomologist Edward Payson Van Duzee in 1908.
Males are 5.5 millimetres in length while females are 6 millimetres. They are usually reddish-brown in color but vary highly.
Cyrtolobus fuscipennis is found in eastern and midwestern United States, but can reach as far west as the Rocky Mountains.