Enchenopa binotata complex
Phylogenetics
### Phylogenetics

[Phylogenetic](/wiki/Phylogenetics "Phylogenetics") data have showed that this species of Eastern North American treehoppers (*E. binotata*) diverged from two closely related species of *Enchenopa* from Central and South America.Guttman, Sheldon I., Thomas K. Wood, and Alvan A. Karlin. "Genetic differentiation along host plant lines in the sympatric Enchenopa binotata Say complex (Homoptera: Membracidae)." Evolution (1981\): 205\-217\. These two *Enchenopa* species are known to be [polyphagous](/wiki/List_of_feeding_behaviours "List of feeding behaviours") (feeds on multiple species of plants) as opposed to *E. binotata* that are [monophagous](/wiki/Generalist_and_specialist_species "Generalist and specialist species") (only feeds on one species of plants).

Male signal frequency is more heritable than female preference for certain frequencies. This means that there is more selection pressure on male signal frequency than female preference. Female choice might actually be the selection pressure that drove the divergence of male signal frequency in the *E. binotata* species complex.


What selection pressure drives the divergence of male signal frequency in the E. binotata species complex?