1. Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA
2. Department of Biology, Texas State University, San Marcos, TX 78666, USA
3. Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA
4. Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB), Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP 13083-862, Brazil
5. School of Biology and Ecology, University of Maine, Orono, ME 04469, USA