Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.
 
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Genus
Heterodon
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North American Hognose Snakes
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Nordamerikanische Hakennasennattern
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Nordamerikanske Trynesnoge
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1801 |  |
Heterodon Latreille (type species: Heterodon platyrhinos Latreille 1802#) |
Contents:
5 species, of which 2 (40.0%) are endemic.
Endemism: 0%  100%
Distribution:
North America.
Reported from:
Canada
(Alberta,
Manitoba,
Ontario,
Saskatchewan),
Mexico
(Aguascalientes,
Chihuahua,
Coahuila,
Durango,
Jalisco,
Nuevo Leon,
San Luis Potosi,
Sonora,
Tamaulipas,
Zacatecas),
USA
(Alabama,
Arizona,
Arkansas,
Colorado,
Connecticut,
Delaware,
Florida,
Georgia,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Louisiana,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
New Hampshire,
New Jersey,
New Mexico,
New York
[incl.
Long Island],
North Carolina,
North Dakota,
Ohio,
Oklahoma,
Pennsylvania,
Rhode Island,
South Carolina,
South Dakota,
Tennessee,
Texas,
Virginia,
Washington, D.C.,
West Virginia,
Wisconsin,
Wyoming).
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Heterodon gloydi
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Dusty Hognose Snake
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Texas-Hakennasennatter
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Texas-trynesnog
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1952 | |
Heterodon nasicus gloydi Edgren |
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Heterodon gloydi Werler & Dixon 2000 |
Remarks:
Werler & Dixon (2000) regarded gloydi as a separate species, followed by several authors (e.g., Crother (ed.) 2008, 2012; Ballinger, Lynch & Smith 2010), however, Smith, Chiszar, Eckerman & Walley (2003), followed by Dixon (2013), retained it under nasicus, although suggesting it might be valid. In spite of having been reported from other states, gloydi is herein considered restricted to eastern Texas, following Werler & Dixon (2000) and Smith, Chiszar, Eckerman & Walley (2003). A record of gloydi from Arkansas (Means 1976; repeated by Vance 1985), subsequently proved to be a platirhinos (Irwin 2001).
Distribution:
USA
(Texas).
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Heterodon kennerlyi
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Mexican Hognose Snake
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Nordmexicanische Hakennasennatter
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Nordmexicansk Trynesnog
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1860 | |
Heterodon kennerlyi Kennicott |
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Heterodon nasicus kennerlyi Bocourt 1886 |
Remarks:
Revalidated as a separate species by Smith, Chiszar, Eckerman & Walley (2003), although still retained as a subspecies of nasicus by some authors (e.g., Brennan & Holycross 2006 [by implication]).
Distribution:
Mexico
(Aguascalientes,
Chihuahua,
Coahuila,
Durango,
Jalisco,
Nuevo Leon,
San Luis Potosi,
Sonora,
Tamaulipas,
Zacatecas),
USA
(Arizona,
New Mexico,
Texas).
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Heterodon nasicus
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Western Hognose Snake, Plains Hognose Snake (former subspecies nasicus)
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Westliche Hakennasennatter
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Vestlig Trynesnog
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1852 | |
Heterodon nasicus Baird & Girard |
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1853 | |
Heterodon cognatus Baird & Girard (Schmidt 1953) |
Remarks:
Previously included gloydi and kennerlyi. Mexican and Arizona records refer to kennerlyi. Both species occur in New Mexico and Texas. A single Wisconsin record from 1946 (Casper 2008).
Distribution:
Canada
(Alberta,
Manitoba,
Saskatchewan),
USA
(Colorado,
Illinois,
Iowa,
Kansas,
Minnesota,
Missouri,
Montana,
Nebraska,
New Mexico,
North Dakota,
Oklahoma,
South Dakota,
Texas,
Wyoming).
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Heterodon nasicus
© Rune Midtgaard
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Heterodon platirhinos
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Eastern Hognose Snake
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Östliche Hakennasennatter
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Østlig Trynesnog
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1802 | |
Heterodon platirhinos Latreille |
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1802 | |
Coluber cacodaemon Shaw (Schmidt 1953) |
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1803 | |
Coluber heterodon Daudin (Schmidt 1953) |
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1803 | |
Scytale niger Daudin [rejected; not Scytale neuwiedii var. nigrum Duméril, Bibron & Duméril 1854] (Smith & Chiszar 1989) |
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1835 | |
Coluber thraso Harlan (Schmidt 1953) |
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1836 | |
Heterodon annulatus Troost (Schmidt 1953) |
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1836 | |
Heterodon tigrinus Troost (Schmidt 1953) |
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1853 | |
Heterodon atmodes Baird & Girard (Schmidt 1953) |
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1903 | |
Heterodon browni Stejneger (Edgren 1957; Blem 1981) |
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Heterodon platyrhinos browni Schmidt 1953 |
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1932 | |
Heterodon contortrix Allen (attributed to Linnaeus) (Reptile Database, viewed 2 Jan 2016) |
Remarks:
Specific epithet frequently spelled platyrhinos in older literature.
Distribution:
Canada
(Ontario),
USA
(Alabama,
Arkansas,
Colorado,
Connecticut,
Delaware,
Florida,
Georgia,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Louisiana,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
Nebraska,
New Hampshire,
New Jersey,
New York
[incl.
Long Island],
North Carolina,
Ohio,
Oklahoma,
Pennsylvania,
Rhode Island,
South Carolina,
South Dakota,
Tennessee,
Texas,
Virginia,
Washington, D.C.,
West Virginia,
Wisconsin).
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Heterodon simus
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Southern Hognose Snake
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Südliche Hakennasennatter
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Sydlig Trynesnog
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1766 | |
Coluber simus Linnaeus |
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Heterodon simus Holbrook 1842 |
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1858 | |
Heterodon catesbyi Günther (Schmidt 1953) |
Distribution:
USA
(Alabama,
Florida,
Georgia,
Mississippi,
North Carolina,
South Carolina).
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