Mexico Herpetology

Adult, 4,200′, Cochise Co., Arizona

CHECKERED GARTER SNAKE
Thamnophis marcianus – Baird & Girard 1853
Thamnophis marcianus marcianus – Baird & Girard 1853

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Chihuahua Grassland Habitat, Cochise Co., Arizona

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I have never seen this species in Mexico; however, I have seen them very commonly in the Chihuahuan Grassland north of Agua Prieta in the San Bernardino Valley of [...]

LOWE’S GARTER SNAKE
Thamnophis sirtalis – Linnaeus 1758
Thamnophis sirtalis lowei – Tanner 1988

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Distributed throughout the Rio Casas Grandes drainage of northwestern Chihuahua, to around 2,050 m Elevation.

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Some authorities consider lowei to be a synonym of the subspecies dorsalis, which occurs along the Rio Grande of New Mexico.

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I have no experience with this [...]

NEW MEXICO GARTER SNAKE
Thamnophis sirtalis – Linnaeus 1758
Thamnophis sirtalis dorsalis – Baird & Girard 1853

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The New Mexico Garter Snake has never been recorded from Mexico. Habitat along the Rio Grande is highly altered by agriculture and industry, but snakes may persist along canals in the immediate vicinity of Cuidad Juarez. In the United States this [...]

Adult, DOR, 100′, Guerrero, Mexico

MEXICO RIBBON SNAKE
Thamnophis proximus – Say 1823
Thamnophis proximus rutiloris – Cope 1885

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Thamnophis proximus rutiloris is the most widespread Ribbon Snake in Mexico. It occurs along the Atlantic Coastal Plain from southern Tamaulipas (where it intergrades with the northern subspecies orarius around Soto la Marina and Cuidad Victoria), southward through San Luis [...]

CHIAPAS HIGHLAND RIBBON SNAKE
Thamnophis proximus – Say 1823
Thamnophis proximus alpinus – Rossman 1963

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RIO TEPALCATEPEC GARTER SNAKE
Thamnophis postremus – Smith 1942

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Adult, 7,000′, Durango, Mexico

DURANGO NARROW-HEADED GARTER SNAKE
Thamnophis nigronuchalis – Thompson 1957

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Habitat, 7,000′, Durango, Mexico

Habitat, 7,000′, Durango, Mexico

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TAMAULIPAN MONTANE GARTER SNAKE
Thamnophis mendax – Walker 1955

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Cloud Forest Clearing Habitat, 4,700′, Tamaulipas, Mexico

Cloud Forest, 4,800′, Tamaulipas, Mexico

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MEXICO BLACK-BELLIED GARTER SNAKE
Thamnophis melanogaster – Peters 1864
Thamnophis melanogaster melanogaster – Peters 1864

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LINED BLACK-BELLIED GARTER SNAKE
Thamnophis melanogaster – Peters 1864
Thamnophis melanogaster linearis – Smith, Nixon & Smith 1950

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CHIHUAHUAN BLACK-BELLIED GARTER SNAKE
Thamnophis melanogaster – Peters 1864
Thamnophis melanogaster chihuahuaensis – Tanner 1959

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Habitat, 5,700′, Sonora, Mexico

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YUCATAN CHECKERED GARTER SNAKE
Thamnophis marcianus – Baird & Girard 1853
Thamnophis marcianus praeocularis – Bocourt 1892

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TWO-STRIPED GARTER SNAKE
Thamnophis hammondii – Kennicott 1860

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MESO-AMERICAN HIGHLAND GARTER SNAKE
Thamnophis fulvus – Bocourt 1893

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