1. Amphibian Evolution Lab; Biology Department; Vrije Universiteit Brussel; 2 Pleinlaan B-1050 Brussels Belgium
2. Coastal Plains Institute and Land Conservancy; 1313 Milton Street Tallahassee FL 32303 USA
3. Centre for Biodiversity and Conservation Biology; Royal Ontario Museum; 100 Queen's Park Toronto ON M5S 2C6 Canada
4. Station d'Ecologie Expérimentale du CNRS à Moulis; USR 2936 09200 Moulis France