William Eberhard is professor of biology@the University of Costa Rica and a staff scientist@the Smithsonian Tropical Research Insitute (STRI) in Panama. He received a Ph.D. in biology from Harvard University and has studied the biology of tropical arthropods for more than 40 years. Address: Smithsonian Tropical Research Institute, Apartado 0843, Balboa Panamá. E-mail: william.eberhard@gmail.com