Figure 11– 1. Comparison of distributions of Heliconius erato and H. melpomene. Note the divergence within each species’
convergence over its range, but the convergence in pattern between the two species wherever they co- occur. Reprinted with
permission from Turner, J.R.G. 1975. “A Tale of Two Butterflies.” Natural History. 84: 29–37.
200 chapter 11 evolutionary arms races: more coevolution, more complexity