Richard G. Zweifel

Richard George Zweifel (born November 5, 1926 in Los Angeles, died November 25, 2019[citation needed]) was an American herpetologist, who classified several species in the American Southwest and in Australia, including the rattling frog. Zweifel worked at the American Museum of Natural History from 1954 to 1989, and was Herpetology Department Chairman from 1968 to 1980.[1]

Zweifel was a resident of Northvale, New Jersey,[2] and in Arizona.[3]


  • Zweifel RG (1955). "Ecology, distribution and systematics of frogs of the Rana boylei group". Univ. California Pub. Zool. 54 (4): 207–292.
  • Zweifel RG (1985). Australian Frogs of the Family Microhylidae. ISBN 99953-48-60-8.
  • Zweifel RG (1998). Encyclopedia of Reptiles & Amphibians. (with Harold George Cogger and David Kirshner) ISBN 0-12-178560-2.
  • Zweifel RG (2001). Encyclopedia of Animals: Mammals, Birds, Reptiles, Amphibians. (with Harold George Cogger, Joseph Forshaw, Edwin Gould, and George McKay) ISBN 1-875137-99-8.


In 1984, he was honored by the naming of "Zweifel's frog" (Lithobates zweifeli ), found in Mexico,[4] and in 1998 a microhylid frog Cophixalus zweifeli was named after him.[5] Several other amphibians have been named for him: Nyctimystes zweifeli, Xenorhina zweifeli, and Oscaecilia zweifeli, as is the proposed (sub)genus Zweifelia.[3]


  1. ^ "About the Department". American Museum of Natural History, Division of Vertebrate Zoology, Department of Herpetology. Retrieved 2011-01-13.
  2. ^ Stock, Robert W. (1969). "At 100, the Museum Of Natural History Is No Fossil; Behind the scenes, a great institution is striving to make its second century even better". The New York Times, June 29, 1969. Accessed November 22, 2017. "Dr. Zweifel's specialty is frogs, and he pursues them in the swamps of New Jersey (he lives in Northvale, N. J.) and the jungles of New Guinea."
  3. ^ a b Beolens, Bo; Watkins, Michael & Grayson, Michael (2013). The Eponym Dictionary of Amphibians. Pelagic Publishing. p. 241. ISBN 978-1-907807-42-8.
  4. ^ Hillis, David M.; Frost, John S.; Webb, Robert G. (1984-05-01). "A new species of frog of the Rana tarahumarae group from southwestern Mexico" (PDF). Copeia. 1984 (2): 398–403. doi:10.2307/1445197. Archived from the original (PDF) on 2011-07-26. Retrieved 2011-01-13.
  5. ^ Davies MM; McDonald KR (1998). "A new species of frog (Anura: Microhylidae) from Cape Melville, Queensland". Transactions of the Royal Society of South Australia. 122: 159–164.