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Gyalopion canum (COPE, 1861)

IUCN Red List - Gyalopion canum - Least Concern, LC

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Higher TaxaColubridae, Colubrinae, Colubroidea, Serpentes (snakes) 
Subspecies 
Common NamesWestern Hooknose Snake, Chihuahuan Hook-nosed Snake 
SynonymPariaspis [?] canum COPE 1861: 241
Ficimia cana — CHRAPLIWY & WARD 1963
Gyalopion canum — STEBBINS 1985: 215
Gyalopion canum — CONANT & COLLINS 1991: 217
Gyalopion canum — LINER 1994
Gyalopion canum — CROTHER 2000: 62
Gyalopion canum — CROTHER et al. 2012 
DistributionUSA (SE Arizona, New Mexico, SW Texas),
Mexico (NE Sonora, N/E Chihuahua, Coahuila, NE Durango, N Zacatecas, San Luis Potosi, Nuevo Leon, Michoacan [HR 30: 113], Jalisco [HR 32: 59])

Type locality: Fort Buchanan, Arizona. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
TypesHolotype: USNM 5284 
CommentReproduction: oviparous. 
References
  • Chrapliwy, Pete S.;Ward, Arthur J., Jr 1963. New records of the western hook-nosed snake Ficimia cana (Cope), in West Texas. Southwestern Naturalist 8 (1): 52-53 - get paper here
  • Conant,R. & Collins,J.T. 1991. A Field Guide to Reptiles and Amphibians of Eastern/Central North America, 3rd ed. Houghton Mifflin (Boston/New York), xx + 450 p.
  • Cope, E.D. 1860. Catalogue of the Colubridae in the Museum of the Academy of Natural Sciences of Philadelphia, with notes and descriptions of new species. Part II. Proc. Acad. Nat. Sci. Philadelphia 12: 241-266 - get paper here
  • Crother, B. I. 2000. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. Herpetological Circular 29: 1-82
  • Crother, B. I. (ed.) 2012. Standard Common and Current Scientific Names for North American Amphibians, Turtles, Reptiles, and Crocodilians, Seventh Edition. Herpetological Circular 39: 1-92
  • Degenhardt, William G.; C. W. Painter, and A. H. Price 1996. Amphibians and reptiles of New Mexico. Univ. New Mexico Press, 431 pp.
  • Dixon, James R. 2000. Amphibians and reptiles of Texas, second edition. Texas A&M University Press, 421 pp.
  • Hardy, L. M. 1976. Possible hybridization between Gyalopion canum and Ficimia publia (Serpentes: Colubridae). American Zoologist 16 (2): 16
  • Hardy, Laurence M. 1976. Gyalopion, G. canum, G. quadrangularis. Catalogue of American Amphibians and Reptiles (182): 1-3 - get paper here
  • Smith, Hobart M. 1944. Snakes of the Hoogstraal Expeditions to northern Mexico. Zoological Series of Field Museum of Natural History 29 (8): 135-152 - get paper here
  • Smith, J. R.;Thornton, Okla W., Jr;Dixon, James R. 1996. Geographic Distribution. Gyalopion canum. Herpetological Review 27 (1): 34 - get paper here
  • Stebbins,R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston
  • Tennant, A. & Bartlett, R.D. 2000. Snakes of North America - Eastern and Central Regions. Gulf Publishing, Houston, TX, 588 pp.
  • Thornton, Okla W., Jr.;Smith, Jerry R. 1993. New county records of amphibians and reptiles from West-Central Texas. Herpetological Review 24 (1): 35-36 - get paper here
  • Valdez-Lares, R.; R. Muñiz-Martínez; E.Gadsden; G. Aguirre-León; G. Castañeda-Gaytán; R. Gonzalez-Tr 2013. Checklist of amphibians and reptiles of the state of Durango, México. Check List 9 (4):714-724 - get paper here
  • Werler, John E.&; James R. Dixon 2000. Texas Snakes. University of Texas Press, 544 pages
  • Werning, Heiko 2012. Die Reptilien und Amphibien des Südwestens. Draco 13 (50): 18-60 - get paper here
 
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