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Tantilla planiceps (BLAINVILLE, 1835)

IUCN Red List - Tantilla planiceps - Least Concern, LC
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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Western Blackhead Snake
G: Westliche Schwarzkopfschlange
S: Culebra Cabeza Negra Occidental 
SynonymColuber planiceps BLAINVILLE 1835: 294
Homalocranion planiceps — DUMÉRIL 1853: 490
Tantilla planiceps — COPE 1861: 74
Homalocranion planiceps — JAN 1866
Tantilla planiceps — GARMAN 1884: 89
Tantilla planiceps — VAN DENBURGH 1895: 140
Homalocranium planiceps — GÜNTHER 1895: 145.
Tantilla eiseni STEJNEGER "1895" (1896): 117
Homalocranium planiceps — MOCQUARD 1899: 316
Tantilla eiseni — KLAUBER 1928
Tantilla eiseni — TAYLOR 1937
Tantilla eiseni — BLANCHARD 1938
Tantilla planiceps — BLANCHARD 1938
Tantilla eiseni transmontana KLAUBER 1943: 71
Tantilla planiceps — SMITH & TAYLOR 1945: 141
Tantilla planiceps eiseni — TANNER 1966: 134
Tantilla planiceps transmontanta — TANNER 1966: 134
Tantilla planiceps — SEIB 1980
Tantilla planiceps — STEBBINS 1985: 217
Tantilla planiceps — LINER 1994
Tantilla planiceps — LINER 2007
Tantilla planiceps — WILSON & MATA-SILVA 2014: 44
Tantilla planiceps — WALLACH et al. 2014: 704 
DistributionUSA (California),
Mexico (Baja California)

Elevation: 0-1220 m (WILSON & MATA-SILVA 2014)

Type locality: California (including Baja California), restricted to southern Baja California del Sur (Cabo San Lucas) by Smith and Taylor (1950); restriction accepted by Cole and Hardy (1981).  
Reproductionoviparous 
TypesHolotype: MNHN-RA 818, adult male, collected in 1827-1829 by M. P. E. Botta.
Holotype: SDNHM = SDSNH [Tantilla eiseni transmontana]
Holotype: USNM 11766 [Tantilla eiseni] 
Diagnosis 
Comment 
EtymologyThe name planiceps is derived from the Latin words planus, meaning “even, flat, or level” and caput, meaning “head,” in reference to the flat crown. 
References
  • ALVAREZ, JEFF A. 2022. TANTILLA PLANICEPS (Western Black-headed Snake). DIET. Herpetological Review 53 (3): 522.
  • Blainville, Henri Marie Ducrotay de 1835. Description de quelques espèces de reptiles de la Californie précédée de l’analyse d’un système général d’erpétologie et d’amphibiologie. Nouv. Ann. Mus. Hist. Nat. Paris 4: 233-296 - get paper here
  • Blanchard, Frank N. 1938. Snakes of the genus Tantilla in the United States. Zoological Series of Field Museum of Natural History 20 (28): 369-376 - get paper here
  • Cole, Charles J. and Laurence M. Hardy 1983. Tantilla planiceps. Catalogue of American Amphibians and Reptiles. (319): 1-2 - get paper here
  • Cole, Charles J.; Hardy, Laurence M. 1981. Systematics of North American colubrid snakes related to Tantilla planiceps (Blainville). Bull. Amer. Mus. Nat. Hist. 171 (3): 199-284 - get paper here
  • 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
  • Dury, R. 1932. Recent Acquisitions to the Department of Herpetology. Proc. Jr. Soc. Nat. Hist. Cincinnati 3 (2): 26-28
  • Garman, Samuel 1884. The reptiles and batrachians of North America. Mem. Mus. comp. Zool, Cambridge (Massachusetts), 8 (3): xxxiv + 185 pp. [1883] [CNAH reprint 10] - get paper here
  • Goldberg, Stephen R. 2017. Tantilla planiceps (Western Black-headed Snake) Reproduction. Herpetological Review 48 (1): 220 - get paper here
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Jan, G. 1866. Iconographie générale des ophidiens. 15. Livraison. J.B. Bailière et Fils, Paris - get paper here
  • Klauber, L. M. 1928. A list of amphibians and reptiles of San Diego County, California. Zoological Society of San Diego (Bulletin #4): 1-8 - get paper here
  • Klauber, Laurence M. 1943. A desert subspecies of the snake Tantilla eiseni. Transactions of the San Diego Society of Natural History 10 (5): 71-74 - get paper here
  • Leviton, Alan E.; Banta, Benjamin H. 1964. Midwinter reconnaissance of the herpetofauna of the Cape Region of Baja California, Mexico. Proc. Cal. Acad. Sci. 30 (7): 127-156 - get paper here
  • Liner, Ernest A. 2007. A CHECKLIST OF THE AMPHIBIANS AND REPTILES OF MEXICO. Louisiana State University Occasional Papers of the Museum of Natural Science 80: 1-60 - get paper here
  • Mocquard, M.F. 1899. Contribution a la faune herpétologique de la Basse-Californie. Nouv. Arch. Mus. Hist. Natur.Paris, 4th Series, Vol. 1: 297-343 + plates XI-XIII - get paper here
  • Peralta-García A, Valdez-Villavicencio JH, Fucsko LA, Hollingsworth BD, Johnson JD, Mata-Silva V, Rocha A, DeSantis DL, Porras LW, and Wilson LD. 2023. The herpetofauna of the Baja California Peninsula and its adjacent islands, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 17(1&2): 57–142
  • Pregill, Gregory K.;Berrian, James E. 1984. Type specimens of amphibians and reptiles in the San Diego Natural History Museum. Transactions of the San Diego Society of Natural History 20 (10): 151-164 - get paper here
  • Seib, R. L. 1980. Baja California: A Peninsula for Rodents But Not for Reptiles. [reply to Taylor & Regal 1978] American Naturalist 115(4): 613–620 - get paper here
  • Stebbins,R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston
  • Stejneger, Leonard 1896. Description of a new species of snake (Tantilla eiseni) from California. Proc. U.S. Natl. Mus. 18: 117-118 (1895) - get paper here
  • Taylor, Edward H. 1937. Notes and comments on certain American and Mexican snakes of the genus Tantilla, with descriptions of new species. Transactions of the Kansas Academy of Science 39 [1936]: 335-348 - get paper here
  • Van Denburgh,J. 1895. A review of the herpetology of Lower California. Part I - Reptiles. Proc. Cal. Acad. Sci. (2) 5: 77-163 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • Wilson, Larry David and Vicente Mata-Silva 2015. A checklist and key to the snakes of the Tantilla clade (Squamata: Colubridae), with comments on distribution and conservation. Mesoamerican Herpetology 2 (4): 418 - get paper here
  • Wilson, Larry David and Vicente Mata-Silva. 2014. Snakes of the genus Tantilla (Squamata: Colubridae) in Mexico: taxonomy, distribution, and Conservation. Mesoamerican Herpetology 1 (1): 5-95 - get paper here
 
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