1. Department of Ecology and Evolutionary Biology; Princeton University; Princeton NJ 08540 USA
2. Centre for Ecological Sciences; Indian Institute of Science; Bengaluru 560012 India
3. Max Planck Institute for Physics of Complex Systems; 01187 Dresden Germany
4. School of Biological Sciences and Center for Mathematical Biology; The University of Sydney; Sydney NSW 2006 Australia
5. Department of Entomology; Texas A&M University; College Station TX 77842 USA