Species Information
Image courtesy of Biota Information System of New Mexico
New Mexico Ridgenose Rattlesnake
Scientific Name: Crotalus willardi obscurus
Number of Subpopulations: 10
Number of Mapped Locations: 58
Number of Observations: 114
Observation date range: 01-01-1901 to 09-28-2017
Species Related Publications
1961
Bogert, C.M. and W.G. Degenhardt. 1961. An addition to the fauna of the United States, the Chihuahua ridge-nosed rattlesnake in New Mexico. American Museum of Nat. Hist. Novitates 2064:1-15.
A61BOG01NMUS
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1976
Harris, H.S. and R.S. Simmons. 1976. The paleogeography and evolution of Crotalus willardi, with a formal description of a new subspecies from New Mexico, United States. Bul. of Maryland Herp. Soc., 12(1):1-22.
A76HAR01NMUS
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1969
Kauffeld, C. 1969. Snakes: The keeper and the kept. Doubleday and Co., Inc. Garden City, N.Y. 248 pp.
B69KAU01NMUS
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2017
Christman, B. 2017. FWS Annual Permit Report and Data for Chiricahua Leopard Frog, Narrow-headed and Mexican Gartersnakes, and New Mexico Ridge-nosed Rattlesnake. FWS Permit TE-071287-1. Albuquerque, NM.
E17CHR01NMUS
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2011
Christman, M.R. 2011. Photograph and sighting of Crotalus willardi obscurus.
I11CHR01NMUS
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1990
Painter, C. 1990. Locality of Crotalus willardi obscurus in Peloncillo Mountains. Hand drawn from U.S.G.S. Guadalupe Canyon Ariz-NM and Apache AZ-NM quadrangle, 15 min series - 19 and attached xeroxed 15 min. topo map.
M90PAI02NMUS
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1990
Lowe, C. Dept. of Ecology and evolutionary Biology, University of Arizona, Tucson, AZ. (602) 621-3187.
P90LOW01NMUS
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1998
Painter, C. 1998. Status of New Mexico Ridgenose Rattlesnake. Performance report to U.S. Fish and Wildlife Service, Section 6 E-23-6. New Mexico Department of Game and Fish, 20 p.
R98PAI02NMUS
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60
S60DEGSBNMUS, Legacy reference. Physical copy not yet located.
S60DEGSBNMUS
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61
S61KAUSBNMUS, Legacy reference. Physical copy not yet located.
S61KAUSBNMUS
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SXXXXXSBNMUS, Legacy reference. Physical copy not yet located.
SXXXXXSBNMUS
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2006
Painter, C. 2006. Field forms for Chiricahua Leopard Frogs (Rana chiricahuensis) in Southwesten New Mexico. 1000+ p.(2000-2004).
U06PAI01NMUS
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2007
Propst, D. 2007. New Mexico Department of Game and Fish collections under USFWS permit TE815409-0 for 2006. 4 p.
U07PRO01NMUS
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1977
Hubbard, J.P. et.al. 1977. A biological inventory of the Animas Mountains. Hidalgo County, New Mexico. Unpubl. manuscript for endangered species program, N.M. Dept. of Game and Fish. 53 pp.
U77HUB01NMUS
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1980
Applegarth, J.S. 1980. The ridge-nosed rattlesnake in New Mexico: a review of existing information and a search for suitable habitat on public lands. Unpubl. manuscript for US Bureau of Land Mngt., Las Cruces, 140 pp.
U80APP01NMUS
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80
U80APPO1NMUS, Legacy reference. Physical copy not yet located.
U80APPO1NMUS
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1990
Painter, C.W. 1990. Field trip into the Animas Mountains, Gray Ranch, Hidalgo County, New Mexico. Unpub. manuscript to the Nature Conservancy NMNHP. 4 pp.
U90PAI01NMUS
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1990
Sugg, D.W. 1990. Unpublished listing of amphibians specimens from MSB. 5 pp.
U90SUG01NMUS
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1991
Painter, C.W. et al. 1991. The continuation of studies of the natural history of the New Mexico ridgenose rattlesnake Crotalus willardi obscurus, Gray Ranch NM, Unpubl. report for N.M. Dept Game and Fish submitted 15 Oct 91. 6 pp.
U91PAI03NMUS
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1993
Montoya, B. 1993.Tables and maps for aquatic species collected during the calendar year1993. New Mexico Department of Game and Fish. Santa Fe, New Mexico. 7 p.
U93MON01NMUS
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1994
Painter, C. 1994. Notes from phone call to Pat Mehlhop on desert tortoise and Crotalus willardi.
U94PAI04NMUS
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1995
Holycross, A.T. 1995. Biogeography of Crotalus willardi in the Madrean Archipelago of Arizona. Unpubl. Quarterly Progress Report. Heritage IIPAM Grants-in-Aid Award I95048, p. 5.
U95HOL01NMUS
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1995
Holycross, A.T. 1995. Status of the Animas Mountains Population of Crotalus willardi obscurus. Unpublished Report of Activities Conducted Under professional Service Contract No. 95-516-28 for the New Mexico Game and Fish Department (NMDGF). Arizona State
U95HOL03NMUS
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