These studies would not be possible if it were not for the many individuals from around the world who kindly donated fleas for DNA analysis. To date, the following persons have contributed fleas from their respective geographical regions and we would like to acknowledge their efforts.
Andres Angula, Mauricio Alarcón & Patricia Chandia, Departmento de Zoologia, Universidad de Concepcion, Casilla, Concepcion, Chile.
Kevin L. Campbell, Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada.
Robert S. Copeland, Biodiversity and Conservation Programme, International Centre of Insect Physiology and Ecology, Nairobi, Kenya.
Michael Driessen, World Heritage Area Zoologist, Parks and Wildlife Service, Hobart, Tasmania 7001, Australia.
Jean-Marc Duplantier, Programme RAMSE, Antananarivo, Madagascar.
Ralph P. Eckerlin, Department of Biology, Northern Virginia Community College, Annandale, Virginia, U.S.A.
Robert Elbel, Brad Lengus, and John Vincent, Department of Biology, University of Utah, Salt Lake City, Utah, U.S.A.
Richard Fagerlund, Environmental Services, University of New Mexico, Albuquerque, New Mexico, U.S.A.
Karl Frafjord, Tromsø Museum, University of Tromsø, Norway.
Milton H. Gallardo, Instituto de Ecologia y Evolucion, Universidad Austral de Chile, Valdivia, Chile.
William L. Gannon, Museum of Southwestern Biology, University of New Mexico, Albuquerque, New Mexico, U.S.A.
Shellye Godell, Graduate Student, Brigham Young University, Provo, Utah, U.S.A.
Maria S. Gomez, Laboratori de Parasitologia, Universitat de Barcelona, Barcelona, Spain.
Ricardo Guerrero, Department of Biology, University of Caracas, Caracas, Venezuela.
Frederick J. Harrison (R. Thomas), U.S. Army Center for Health Promotion and Preventive Medicine, Fort Lewis, Washington, U.S.A.
Menna Jones and B. Lazenby, University of Tasmania, Tasmania, Australia.
Boris Krasnov, Ramon Science Center, Ben-Gurion University of the Negev, Mizpe Ramon, Israel.
James Kucera, Murray, Utah, U.S.A.
Juha Laakkonen, Department of Biology, University of California at San Diego, La Jolla, California, U.S.A.
Robert E. Lewis, Iowa State University, Ames, Iowa, U.S.A.
Pedro M. Linardi, Departmento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte/Minas Gerais, Brazil.
Javier Lucientes, Departamento de Patologia Animal, Facultad de Veterinaria, Universidad de Zaragoza, SPAIN.
Luliang and Guo Tianyu, Department of Vector Biology and Control, Institute of Microbiology and Epidemiology, Beijing, China.
Anthony Maddock, KwaZulu-Natal Nature Conservation Service, South Africa.
Tom Manning and Sam Gilman, Department of Forest Service, Oregon State University, Corvallis, Oregon, U.S.A.
Sergeij G. Medvedev, Zoological Institute, Russian Academy of Science, Saint-Petersburg, Russian
Michael Patrick and Michael Gannon, Department of Biology, The Pennsylvania State University, Altoona, Pennsylvania, U.S.A.
Mary Peacock, Biological Resources Research Center, Department of Biology,University of Nevada, Reno, Nevada, U.S.A.
Stephen Petersen, University of Alberta, Edmonton, Alberta, Canada
R.L.C. Pilgrim & Andrea Booth, Department of Zoology, University of Canterbury, Christchurch, New Zealand.
Hugo A. Ruiz PiÔa, Laboratorio de Parasitologia, Merida, Yucatan, Mexico
Duke Rogers, Department of Zoology, Brigham Young University, Provo, Utah, U.S.A.
Jerrold J. Scharninghausen, College Station, Texas, U.S.A.
Mikal Stanko, Institute of Zoology and Ecosozology of the Slovak Academy of Sciences, Department of Agricultural Landscape Ecology, Koëice, The Slovak Republic.
Paul Stapp, Department of Environmental Sciences and Policy, University of California, Davis, Davis, California, U.S.A.
Andreij Tschabowsky, Svertzow Institute of Ecology and Evolution, Leninsky Prospeckt 33, Moscow 119071, Russia.
Craig White, Graduate Student, Brigham Young University, Provo, Utah, U.S.A.
Dr. Kathrin Worschech, Naturkundemuseum Altenburg, Germany
Dr. Matthias Kiefer, Muenchen, Germany.