Regardless of the host, all members of the two-marked treehopper Enchenopa species complex have one generation per season in Ohio. All of the species look the same and practice the same egg laying behavior. Eggs are laid in late summer with females using their saw-like ovipositors to cut slits in the bark of their host trees. After they insert their eggs, they cover the bark wound with the white, sticky egg plugs that serve to protect the eggs. The plugs also contain a chemical attractant that draws other females to lay their eggs in close proximity to one another.