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E-mail: font@focusonnature.com
Phone: Toll-free in USA 1-800-721-9986
 or 302/529-1876

 

Amphibians and Reptiles 
of Mexico 
Noting those found during Focus On Nature Tours
in Mexico with an (*)

including: 
Salamanders
Toads & Frogs (seen or heard), 
Turtles
Lizards
Snakes

A list compiled by Armas Hill

UPPER RIGHT PHOTO: a YARROW'S (or MOUNTAIN) SPINY LIZARD, photographed during a FONT tour.
This species occurs in Sonora, in northern Mexico.  (photo by Doris Potter)  


      Codes:

      bc -  occurs in Baja California
        cz -  occurs on Cozumel Island 
        sn -  occurs in Sonora  
        yp -  occurs on the Yucatan Peninsula

        (N):  in northern Mexico
        (S):  in southern Mexico

        (MXe): endemic to Mexico 
        (MXi): introduced in Mexico          


Of the approximately 970 species of amphibians & reptiles that occur in Mexico, about 55% (about 175 amphibians & 375 reptiles) are endemic. Many of them are native to Oaxaca and Chiapas.

Of the 180 or so amphibians & reptiles in the Yucatan Region, about 15% (approximately 25 species), are endemic to that area.

Links:

 Itineraries for Upcoming FONT Birding & Nature Tours in:

Mexico & further south in Central America      

A List & Photo Gallery of Mexican Birds, in 3 parts: 
Part #1: Tinamous to Shorebirds 
Part #2: Jaegers to Woodpeckers
Part #3: Manakins to Buntings 

Birds of the Yucatan Peninsula

Birds of Cozumel Island

Sea-Life, including Fish, of the Coral Reef & Otherwise Offshore

Mammals in Mexico

Butterflies in the Yucatan Region of Mexico 

Directory of Photos in this Website, in this list & others



         

        AMPHIBIANS:

         SALAMANDERS:

         Family PLETHODONTIDAE  (Lungless Salamanders) 

  1. Mexican Salamander  (S)  ______  (also called Mexican Mushroomtongue Salamander) 
    Bolitoglossa mexicana

  2. Yucatan Salamander  (S) _____  (also called Yucatan Mushroomtongue Salamander)
    Bolitoglossa yucatana

  3. Rufescent Salamander  (S) ______ (also called Northern Banana Salamander)
    Bolitoglossa rufescens

  4. Central American Worm Salamander  (S) ______
     Oedipina elongata
  5. Ensatina  (N) ______ bc  (in Mexico, only in northern Baja California) 
         Ensatina eschscholtzii
  6. Arboreal Salamander  (N) ______ bc  (in Mexico, only in far-northern Baja California)
         Aneides lugubris
  7. Garden Salamander  (N) ______ bc  (in Mexico, only in far-northern Baja California)
         Batrachoseps  m. major


    FROGS & TOADS:
  8. Mexican Burrowing Toad  (S)  _____  yp
    Rhinophrynus dorsalis

  9. Tungara Frog  (S)  ______  (also called Mudpuddle Frog)
    Physalaemus pustulosus

  10. Yucatan Rainfrog  (S)  _____  yp
    Eleutherodactylus yucatanensis

  11. Alfredo's Rainfrog  (S)  ______
    Eleutherodactylus alfredi

  12. Polymorphic Robber Frog  (S)  ______  (also called Lowland Rainfrog)
    Eleutherodactylus rhodopis

  13. Broadhead Rainfrog  (S) ______
    Eleutherodactylus laticeps
  14. Leprus Chirping Frog  (S) ______
    Eleutherodactylus leprus
  15. Limestone Rainfrog  (S) ______
    Eleutherodactylus psephosypharus

    Some other species in the Eleutherodactylus genus in southern Mexico recently described.

  16. Barking Frog  (N) ______  sn
    Eleutherodactylus augusti
  17. Plains Spadefoot  (N) ______  sn
    Spea bombifrons
  18. Western Spadefoot  (N) ______  bc  (in Mexico, in northern Baja California)
    Spea hammondii
  19. Mexican Spadefoot  (N) ______  sn
    Spea multiplicata
  20. Couch's Spadefoot  (N) ______  sn
    Scaphiopus couchii
  21. White-lipped Frog  (S)  _____  yp
    Leptodactylus labialis

  22. Black-backed Frog  (S)  _____  yp  (also called Sabinal Frog)
    Leptodactylus melanonotus

  23. Tungara Frog  (S)  _____  yp
    Physalaemus pustulosus

  24. Cane Toad  (S) (*)  _____ cz,yp  (also called Marine Toad)
    Bufo marinus

  25. Gulf Coast Toad  (S) (*) _____ cz,yp
    Bufo valliceps




    Gulf Coast Toad
    (photo by Peter Mooney during the FONT tour in the Yucatan of Mexico in November 2008)
  26. Marbled Toad  (S)  ______
    Bufo marmoreus

  27. Western Toad  (N)  ______  bc  (in Mexico, only in northern Baja California) 
    Bufo boreas

  28. Arroyo Toad  (N)  ______  bc  (in Mexico, only in northern Baja California)
    Bufo californicus

  29. Woodhouse's Toad  (N)  ______  sn
    Bufo woodhousii

  30. Great Plains Toad  (N) ______  sn
    Bufo cognatus

  31. Texas Toad  (N) ______
    Bufo speciosus

  32. Green Toad  (N) ______
    Bufo debilis

  33. Sonoran Green Toad  (N) ______  sn
    Bufo retiformis

  34. Sonoran Desert Toad  (N) ______  sn
    Bufo alvarius

  35. Red-spotted Toad  (N) ______  sn
    Bufo punctatus

  36. Red-eyed Treefrog  (S)  _____  yp  (also called Red-eyed Leaf Frog)
    Agalychnis callidryas

  37. Loquacious Treefrog  (S)  _____  (also called Mahogany Treefrog)
    Hyla loquax

  38. Yellow Treefrog  (S)  _____  cz,yp
    Hyla microcephala

  39. Cricket Treefrog  (S)  _____  (also called Painted Treefrog)
    Hyla picta

  40. Variegated Treefrog  (S)  _____  (also called Hourglass Treefrog)
    Hyla ebraccata

  41. Canyon Treefrog  (N) ______  sn
    Hyla arenicolor

  42. California Treefrog  (N) ______
    Hyla cadaverina

  43. Mountain Treefrog  (N) ______
    Hyla eximia

  44. Pacific Treefrog  (N) ______  bc  (in Mexico, only in Baja California)
    Hyla regilla 

  45. Veined Treefrog  (S)  _____  (also called Pepper Treefrog)
    Phrynohyas venulosa

  46. Stauffer's Treefrog  (S)  _____  cz,yp
    Scinax staufferi

  47. Mexican Treefrog  (S) (*)   _____ cz,yp
    Smilisca baudinii

  48. Blue-spotted Treefrog  (S)  _____  (also called Blue-spotted Mexican Treefrog)
    Smilisca cyanosticta
  49. Northern Casque-headed Frog  (N) ______  (also called Lowland Burrowing Treefrog)
    Pternohyla fodiens
  50. Casque-headed Treefrog  (S) (*)   _____  (also called Yucatecan Shovel-headed Treefrog)
    Troprion petasatus

  51. Northern Cricket Frog  (N) ______
    Acris crepitans
  52. Fleischmann's Glass Frog  (S)  _____  (also called Mexican Glass Frog)
    Hyalinobatrachium fleischmanni

  53. Elegant Narrowmouth Toad  (S) ______
    Gastrophryne elegans
  54. Great Plains Narrowmouth Toad  (N) ______  sn
    Gastrophryne olivacea 
  55. Sheep Frog  (S) (*)  _____
    Hypopachus variolosus

  56. Rio Grande Leopard Frog  (N) (S) (*) _____ 
    Rana berlandieri

  57. Chiricahua Leopard Frog  (N) ______  sn
    Rana chiricahuensis
  58. Lowland Leopard Frog  (N) ______  sn
    Rana yavapaienpis
  59. Vaillant's Frog  (S) (*)  _____  (also called Rainforest Frog)  (in southern Campeche & far southwestern Quintana Roo)
    Rana vaillanti 

  60. Forrer's Grass Frog  (S)  _____
    Rana forreri

  61. Highland Frog  (S)  _____
    Rana maculata

  62. Tarahumara Frog  (N) ______  sn
     Rana tarahumarae

  63. Red-legged Frog  (N) ______  bc  (in Mexico, only in northern Baja California)
     Rana aurora

  64. American Bullfrog  (N) ______  sn
         Rana catesbeiana




         American Bullfrog



    REPTILES:


    Family CHELONIIDAE  (Hard-shelled Sea Turtles): 6 species worldwide 

  65. Atlantic Green (Sea) Turtle  (vulnerably threatened) ______ (Caribbean)  yp
    Chelonia mydas mydas

    Pacific Green (Sea) Turtle      (vulnerably threatened) ______  (Pacific) 
    Chelonia mydas agassizii 

  66. Loggerhead Sea Turtle  (endangered) ______ yp
    Caretta caretta




    A Loggerhead Sea Turtle during a FONT tour
    (photo by Alan Brady)
     
  67. Hawksbill Sea Turtle  (critically endangered) ______ (Caribbean & Pacific)  yp
    Eretmochelys imbricata 

  68. Olive Ridley Sea Turtle  (endangered) ______ (Pacific) 
    Lepidochelys olivacea

  69. Kemp's Ridley Sea Turtle  (endangered) _____ (Caribbean)  yp  (in waters off the north coast of the Yucatan) 
    Lepidochelys kempi  


    Family DERMOCHELYIDAE (Leatherback Turtle): a single species

     
  70. Leatherback Sea Turtle  (endangered) ______ (Pacific) 
    Dermochelys coriacea      (the single member of its genus)


    Family TESTUDINIDAE  (Land Tortoises)

  71. Desert Tortoise  (N) ______  sn
     Gopherus agassizii


    Family TRIONYCHIDAE  (Softshell Turtles)
     
  72. Spiny Softshell  (N) ______
    Trionyx spiniferus
    Family EMYDIDAE  (Box and Water or Pond Turtles)

  73. Furrowed Wood Turtle  (S) (*)  ______  yp
    Rhinoclemmys areolata      (monotypic)


     




    2 photographs of a Furrowed Wood Turtle
    (photos by Peter Mooney during the FONT tour in the Yucatan of Mexico in November 2008)  
  74. Yucatan Box Turtle  (S)  ______ yp  
    (the same species as the     Eastern Box Turtle of the eastern US, although some say the Yucatan Box Turtle warrants full species status)
    Terrapene carolina yucatana 




    Box Turtle
    (photo by Howard Eskin)

  75. Desert Box Turtle  (N)  ______  sn
    Terrapene ornata      (a subspecies of the Western Box Turtle)
  76. Western Pond Turtle  (N) ______  bc  (in Mexico, only in northern Baja California)
    Clemmys marmorata 
  77. Common Slider  (S) (*)  ______  yp  (other names are Yellow-belly Slider and Sun Turtle)
    (has a wide range and a pronounced geographical variation; distributed from the southeastern & central US south through Mexico & Central America to Venezuela, with disjunct populations in the West Indies, and in southeast Brazil, Uruguay, & northern Argentina)   
    Trachemys scripta      (as many as 14 subspecies are sometimes recognized)
    Trachemys s. venusta      (subspecies in the Yucatan Peninsula)

  78. Big Bend Slider  (N)   ______
    Trachemys gaigeae

  79. Pond Slider  (N)  ______
    Trachemys scripta

  80. Rio Grande Cooter  (N) ______
    Pseudemys gorzugi


    Family KINOSTERNIDAE  (Mud & Musk Turtles)

  81. White-lipped Mud Turtle  (S) ______  yp  (also called White-faced Mud Turtle) (in the southern half of Quintana Roo & south Campeche) 
    Kinosternon leucostomum
    Kinosternon l. leucostomum      (subspecies in the Yucatan Peninsula)

  82. Scorpion Mud Turtle  (S) ______  yp  (also called the Red-cheeked Mud Turtle)
    (widely distributed from the Gulf slope in Tamaulipas south through Central America to northern Argentina and eastern Brazil; highly variable geographically) 
    Kinosternon scorpioides      (6 subspecies recognized) 
    Kinosternon s. cruentatum      (subspecies in the Yucatan Peninsula; considered a full species by some authorities)

  83. Creaser's Mud Turtle  (S) ______  yp
    Kinosternon creaseri      (monotypic)

  84. Tabasco Mud Turtle  (S) ______  yp  (in south Quintana Roo)
    Kinosternon acutum      (monotypic)

  85. Sonora Mud Turtle  (N)  ______  sn
    Kinosternon sonoriense

  86. Arizona Mud Turtle  (N)  ______  sn  (has been considered as a subspecies of the Yellow Mud Turtle)
    Kinosternon arizonense 
  87. Yellow Mud Turtle  (N) ______  
    Kinosternon flavescens

  88. Narrowbridge Musk Turtle  (S) _____  yp  (in south Campeche and far-southwestern Quintana Roo)
    Claudius angustatus      (monotypic)

  89. Mexican Giant Musk Turtle  (S) (*)  _____  yp  (in south Campeche & southwestern Quintana Roo)
    Staurotypus triporcatus      (monotypic)


    Family DERMATEMYDIDAE  (Central American River Turtle) 
    This family comprises a single living genus & species, and 2 extinct genera. It is most closely related to the Mud Turtles, Kinosternidae.

  90. Central American River Turtle  (S) _____ yp  (in far-southern Quintana Roo & western Campeche)
    Dermatemys mawii      (monotypic, and the single member of its genus & family)
      


    Family CHELYDRIDAE  (Snapping Turtle): 2 species only in the Americas

     
  91. Common Snapping Turtle  (S)  ______ 
    Chelydra serpentina
    Chelydra s. rossignonii      (subspecies on the Yucatan Peninsula)




    Common Snapping Turtle
    (photo by Howard Eskin)


    Family CROCODYLIDAE  (Crocodile Family): 
    (14 species worldwide; 2 in Mexico) 

  92. American Crocodile  (S) (*) _____ cz,yp
    Crocodylus acutus

    93.
  93. Morelet's Crocodile  (vulnerably threatened)  (S) (*) ______ yp
    Crocodylus moreletii







    Two Morelet's Crocodile Photographs
    The lower photo in the Yucatan during the FONT Mexico tour in March 2009 
    (both photos during FONT tours by Marie Gardner)


    Suborder LACERTILIA  (Lizards)


    Family EUBLEPHARIDAE  (Banded Geckos)

  94. Yucatan Banded Gecko  (S) (*)  ______ yp
    Coleonyx elegans 




    Yucatan Banded Gecko
     (photo by Peter Mooney during the FONT tour in the Yucatan of Mexico in November 2008)  
  95. Texas Banded Gecko  (N) ______
     Coleonyx brevis

  96. Western Banded Gecko  (N) ______  sn
     Coleonyx variegatus

  97. Barefoot Gecko  (MXe) (N) ______  bc  (only in Baja California)
    Coleonyx switaki


    Family GEKKONIDAE  (Geckos)

  98. Common House Gecko (MXi) (S) (*) ______ bc,yp
    Hemidactylus frenatus

  99. Mediterranean Gecko (MXi) (S) (*)  ______ yp
    Hemidactylus turcicus 

  100. Saint George Island Gecko  (S) ______  cz,yp
    Aristelliger georgeensis 

  101. Tuberculate Leaf-toed Gecko  (S) ______ yp
    Phyllodactylus tuberculosus

  102. Leaf-toed Gecko  (N) ______ bc
    Phyllodactylus xanti
  103. San Lucan Gecko  (MXe) (N)  ______  bc  (only in Baja California)
    Phyllodactylus unctus
  104. Stump-toed Gecko  (MXe) (N)  ______  bc  (only locally in southern Baja California)
    Gelyra mutilata  
  105. Spotted Dwarf Gecko  (S)  ______  cz  (in the Yucatan region only on Cozumel Is.; occurs to the south in Belize & Guatemala) 
    Sphaerodactylus millepunctatus

  106. Dwarf Gecko  (S)  ______ cz,yp  (also called Least Gecko)
    Sphaerodactylus glaucus
  107. Ocellated Dwarf Gecko  (S)  ______ yp 
    Sphaerodactylus argus

  108. Central American Smooth Gecko  (S)  ______ yp  (also called Turnip-tail Gecko, or Turnip Tail)
    Thecadactylus rapicauda


    Family CORYTOPHANIDAE (Casque-headed Iguanas): Formerly included in the large and diverse family Iguanidae; in 1989 this group elevated to family status. The Basilisks are commonly referred to "Jesus Christ Lizards" as they can run atop water. The following is an explanation of that behavior:


         A narrow seam of skin, which runs around each basilisk toe, forms a moveable flap that is expanded when its foot is pressed onto the water, thus creating a larger surface area. The force that the lizards put into the downward movement of their feet produces an upward pressure that by itself creates almost a quarter of the total force required to keep the lizard from sinking. When the running basilisk presses its foot down onto the water, an air-filled pocket is formed around the foot. This pocket quickly fills with water, so the lizard must rapidly withdraw it foot to prevent from having to "plow' through the water. As the foot retracts, the moveable skin-flaps on the toes fold down against the sides of the toes to reduce friction against the air. The combined pressure that is produced during a single downward and upward stroke of the foot can be enough to provide 111% of the support required to allow an adult basilisk to run on the water. Small juveniles, with a body weight of less than 2 grams (0.07 of an ounce), are capable of producing 225% of the upward pressure necessary for an animal of that weight. With the combination of speed and specially adapted toe fringes, these lizards can run considerable across the water surface.        
    In order for a 176 pound human to match a running basilisk's aquatic performance, he or she would have to run at almost 69 mph across the water and produce a muscle force 15 times greater than what an average person is capable of doing.   

  109. Striped Basilisk  (S) (*) ______ yp  (also called Brown Basilisk, or "Jesus Christ Lizard") 
    Basiliscus vittatus
  110. Smoothhead Helmeted Basilisk  (S) (*) ______  yp  (also called Elegant-headed Basilisk or "Casque-headed Lizard") (in south Campeche) 
    Corytophanes cristatus

  111. Helmeted Basilisk  (S)  _____  yp  (also called Hernandez's Helmeted Basilisk)
    Corytophanes hernandezii
  112. Eastern Casquehead Iguana  (S) ______  yp  (in far-southern Campeche & far-southwestern Quintana Roo)
    Laemanctus longipes

  113. Serrated Casquehead Iguana  (S)  _____ yp
    Laemanctus serratus


    Family IGUANIDAE  (Iguanas)

  114. Desert Iguana  (N) ______  sn
    Dipsosaurus dorsalis
  115. Common Chuckwalla  (N) ______  sn
    Sauromalus obesus




    A Common Chuckwalla on Alcatraz Island in the Sea of Cortez
    in Sonora, Mexico
         (photo by Abram Fleishman)

  116. Green Iguana  (S) (*)  ______  cz,yp  (also called Common Iguana)
    Iguana iguana
    (A bright green when young, but changes to gray, brown, greenish-gray, or almost black as it grows older)




    Green Iguana
    (photographed during a FONT tour by Marie Gardner)

  117. Black Iguana  (S) (*)  ______  cz,yp  (also called Ctenosaur) 
    Ctenosaura similis 




    Black Iguana
         (photo by Marie Gardner during the March 2009 FONT tour in the Yucatan of Mexico)
  118. Yucatan Spinytail Iguana  (S)  _____  yp  (endemic to the Yucatan, only in the western part of the peninsula)
    Ctenosaura defensor 

  119. Sonoran Spiny-tailed Iguana  (N)  ______  sn
    Ctenosaura macrolopha
  120. Baja California Spiny-tailed Iguana  (MXe) (N) ______  (only in Baja California)
     Ctenosaura hemilopha


    Family CROTAPHYTIDAE  (Collared and Leopard Lizards)

  121. Eastern Collared Lizard  (N) ______  (also called Common Collared Lizard)
     Crotaphytus collaris

  122. Sonoran Collared Lizard  (N) ______  sn
     Crotaphytus nebrius

  123. Grismer's Collared Lizard  (N) ______ bc  (only in far-northern Baja California)
     Crotaphytus grismeri

  124. Baja California Collared Lizard  (N) ______ bc  (only in Baja California)
     Crotaphytus vestigium

  125. Long-nosed Leopard Lizard  (N) ______  sn
     Gambelia wislizenii

  126. Cope's Leopard Lizard  (MXe) (N) ______  bc  (only in Baja California)
     Gambelia copeii   


    Family PHRYNOSOMATIDAE  (Spiny Lizards & allies)

  127. Common Lesser Earless Lizard  (N) ______  sn
    Holbrookia maculata
  128. Elegant Earless Lizard  (N) ______ sn
    Holbrookia elegans
  129. Greater Earless Lizard  (N) ______ sn
    Cophosaurus texanus



    A Greater Earless Lizard photographed during a FONT Tour
    (photo by Doris Potter)
  130. Zebra-tailed Lizard  (N) ______  sn
    Callisaurus draconoides
  131. Yuman Desert Fringe-toed Lizard  (N) ______  sn
    Uma rufopunctata 
  132. Desert Spiny Lizard  (N) ______  sn
    Sceloporus magister




    A Desert Spiny Lizard photographed during a FONT Tour

  133. Clark's Spiny Lizard  (N) ______  sn
    Sceloporus clarkii

  134. Crevice Spiny Lizard  (N) ______
    Sceloporus poinsettii

  135. Granite Spiny Lizard  (N) ______ bc
    Sceloporus orcutti

  136. Cape Spiny Lizard  (MXe) (N)  ______  bc  (only in Baja California)
    Sceloporus licki
  137. Hunsaker's Spiny Lizard  (N)  ______  bc  (in Mexico, only in far-southern Baja California)
    Sceloporus hunsakeri

  138. Western Fence Lizard  (N)  ______  bc  (in Mexico, only in northern Baja California)
    Sceloporus occidentalis

  139. Southwestern Fence Lizard  (N)  ______  sn
    Sceloporus cowlesi

  140. Striped Plateau Lizard  (N) ______  sn
    Sceloporus virgatus

  141. Slevin's Bunchgrass Lizard  (N) ______  sn
    Sceloporus slevini

  142. Yarrow's Spiny Lizard  (N) ______  sn  (also called Mountain Spiny Lizard)  
    Sceloporus jarrovii

      

    A Yarrow's Spiny Lizard during a FONT Tour
    (photo by Doris Potter)

  143. Yucatan Spiny Lizard  (S)  ______  yp  (also called Yellow-spotted Spiny Lizard)  (endemic to the Yucatan Peninsula)
    Sceloporus chrysostictus 




    Yucatan Spiny Lizard
         (photo by Marie Gardner during the March 2009 FONT tour in the Yucatan of Mexico)
  144. Cozumel Spiny Lizard  (S) ______  cz,yp  (in addition to being on Cozumel Is., found at numerous coastal localities in the states of Yucatan & Quintana Roo)
    Sceloporus cozumelae

  145. Lundell's Spiny Lizard  (S) ______  yp
    Sceloporus lundelli

  146. Blue Spiny Lizard  (S)  _____  yp  (also called Blue-spotted Spiny Lizard)
    Sceloporus serrifer
  147. Rose-bellied Spiny Lizard  (S)  _____  yp  (also called Rosebelly Lizard)  (in the Yucatan area, in far-southwestern Quintana Roo)
    (range: Texas to northwest Costa Rica)
    Sceloporus variabilis

  148. Teapen Rose-bellied Lizard  (S) ______
     Sceloporus teapensis      
  149. Common Side-blotched Lizard  (N) ______  sn
     Uta stansburiana




    Common Side-blotched Lizard
    (photo by Howard Eskin)
  150. Long-tailed Brush Lizard  (N) ______
     Urosaurus graciosus

  151. Ornate Tree Lizard  (N) ______  sn
     Urosaurus ornatus

  152. Black-tailed Brush Lizard  (N) ______ bc  (in Mexico, only in Baja California)
     Urosaurus nigricaudus  

  153. Baja California Brush Lizard  (N) ______ bc  (only in Baja California)
     Urosaurus lahtelai

  154. Banded Rock Lizard  (MXe) (N) ______ bc  (only in Baja California)
     Petrosaurus mearnsi

  155. Short-nosed Rock Lizard  (MXe) (N) ______ bc  (only in Baja California)
     Petrosaurus repens

  156. San Lucan Rock Lizard  (MXe) (N) ______ bc  (only in Baja California)
    Petrosaurus thalassinus
  157. Texas Horned Lizard  (N) ______  sn
     Phrynosoma cornutum

  158. Coast Horned Lizard  (N) ______ bc  (in Mexico, in Baja California)
     Phrynosoma coronatum

  159. Desert Horned Lizard  (N) ______  sn
     Phrynosoma platyrhinos

  160. Greater Short-horned Lizard  (N) ______  sn  (also called Mountain Short-horned Lizard)
     Phrynosoma hernandesi

  161. Flat-tailed Horned Lizard  (N) ______  sn
     Phrynosoma mcallii 

  162. Round-tailed Horned Lizard  (N) ______  sn
     Phrynosoma modestum

  163. Regal Horned Lizard  (N) ______  sn
     Phrynosoma solare


    Family Xantusiidae  (Night Lizards)
  164. Henshaw's Night Lizard  (N) ______
     Xantusia henshawi
  165. Desert Night Lizard  (N) ______
     Xantusia vigilis 


    Family POLYCHROTIDAE  (Anoles & allies)

  166. Neotropical Green Anole  (S) ______
    Norops biporcatus
  167. Bighead Anole  (S) ______
    Norops capito
  168. Ghost Anole  (S)  ______ yp
    Norops lemurinus

  169. Lichen Anole  (S) ______ 
    Norops pentaprion
  170. Yucatan Smooth Anole  (S)  ______ yp
    Norops rodriguezii

  171. Brown Anole  (S)  ______ yp
    Norops sagrei




    Brown Anole
         (photo by Peter Mooney during the FONT tour in the Yucatan of Mexico in November 2008)

  172. Silky Anole  (S)  ______ yp
    Norops sericeus 

  173. Greater Scaly Anole  (S)  ______  yp 
    Norops tropidonotus 

  174. Lesser Scaly Anole  (S) ______
     Norops uniformis


    Family SCINCIDAE  (Skinks)

  175. Western Red-tailed Skink  (N) ______
    Eumeces gilbertii rubricaudatus      (a subspecies of the Gilbert's Skink) 

  176. Western Skink  (N) ______
    Eumeces skiltonianus
  177. Great Plains Skink  (N)  ______  sn
    Eumeces obsoletus

  178. Mountain Skink  (N) ______  sn
    Eumeces callicephalus

  179. Schwartze's Skink  (S)  _____  yp
    Eumeces schwartzei

  180. Sumichrast's Skink  (S)  _____ yp
    Eumeces sumichrasti

  181. Shiny Skink (S)   ______ yp  (also called Central American Mabuya or Bronze-backed Climbing Skink)
    Mabuya brachypoda     (or unimarginata)
  182. Ground Skink  (S)  ______ yp  (also called Brown Forest Skink, or Litter Skink)
    Sphenomorphus cherriei


    Family TEIIDAE  (Whip-tailed Lizards)

  183. Middle American Ameiva  (S) ______ 
    Ameiva festiva
  184. Barred Whiptail  (S)  ______ yp  (also called Rainbow Ameiva or Barred Whip-tailed Lizard)
    Ameiva undulata

  185. Tiger Whiptail  (N) ______  sn  (has been called Western Whiptail)
    Cnemidophorys tigris  
  186. Chihuahuan Spotted Whiptail  (N) ______
    Aspidoscelis (formerly Cnemidophorus) exsanguis

  187. Orange-throated Whiptail  (N) ______  bc  (in Mexico, only in Baja California)
    Aspidoscelis (formerly Cnemidophorus) hyperythrus 

  188. Desert Grassland Whiptail  (N) ______ 
    Aspidoscelis (formerly Cnemidophorus) uniparens




    Desert Grassland Whiptail
     (photo by Doris Potter)
  189. Little Striped Whiptail  (N) ______
    Aspidoscelis     (formerly Cnemidophorus) inornatus
  190. Sonoran Spotted Whiptail  (N) ______  sn
    Aspidoscelis     (formerly Cnemidophorus) sonorae
  191. Common Spotted Whiptail  (N) ______
    Aspidoscelis     (formerly Cnemidophorus) gularis
  192. Canyon Spotted Whiptail  (N) ______  sn
    Aspidoscelis     (formerly Cnemidophorus) burti
  193. Yucatan Whiptail  (S)  ______ yp  (also called Narrow-headed Whiptail)
    Aspidoscelis     (formerly Cnemidophorus) angusticeps
  194. Cozumel Whiptail  (MXe) (S)  _____ cz  (also called Cozumel Racerunner)  (endemic to Cozumel Is.)
    Aspidoscelis     (formerly Cnemidophorus) cozumela 
  195. Maslin's Whiptail  (S)  _____  yp
    Aspidoscelis     (formerly Cnemidophorus) maslini
  196. Rodeck's Whiptail  (S)  _____ yp  (endemic to Islas Contoy & Mujeres off the north Yucatan Peninsula, and on the mainland in the vicinity of Puerto Juarez)
    Aspidoscelis     (formerly Cnemidophorus) rodecki
  197. Deppe's Whiptail  (S) ______  (also called Blackbelly Racerunner, or Seven-lined Racerunner)
    (also called Blackbelly Racerunner, or Seven-lined Racerunner)
    Aspidoscelis     (formerly Cnemidophorus) deppii 
  198. Baja California Whiptail  (MXe) (N)  ______  (only in Baja California) 
    Aspidoscelis (formerly Cnemidophorus) labialis


    Family XANTUSIIDAE  (Night Lizards)

  199. Yellow-spotted Night Lizard  (S) ______ 
     Lepidophyma flavimaculatum


    Family ANGUIDAE  (Galliwasps, Alligator Lizards, Glass Lizards)

  200. Rosella's Lesser Galliwasp  (S) ______
     Celestus rozellae

  201. Southern Alligator Lizard  (N) ______
     Elgaria multicarinata

  202. Madrean Alligator Lizard  (N) ______  sn
     Elgaria kingii

  203. Central Peninsula Alligator Lizard  (MXe) (N) ______  bc  (only in Baja California)
     Elgaria velazquezi

  204. San Lucan Alligator Lizard  (MXe) (N) ______  bc  (only in far-southern Baja California)
    Elgaria paucicarinata

  205. Cedros Island Alligator Lizard  (MXe) (N) ______ bc  (only in Baja California)
     Elgaria cedrosensis    


    Family ANNIELLIDAE  (North American Legless Lizards)

  206. California Legless Lizard  (N) ______
     Anniella pulchra

  207. Baja California Legless Lizard  (MXe) (N) ______  bc  (only in Baja California)
     Anniella geronimensis


    Family AJOLOTE  (Mole Lizard)

  208. Mole Lizard  (MXe) (N) ______  bc  (only in Baja California)
     Bipes biporus 


    Family HELODERMATIDAE  (Venomous Lizards)

  209. Gila Monster  (N) ______  sn
     Heloderma suspectum

  210. Black-beaded Lizard  (S) ______  (also called Beaded Lizard)  (in southern Mexico, in Oaxaca & Chiapas)
     Heloderma horridum


    Suborder SERPENTES  (Snakes)


    Family TYPHLOPIDAE  (True Blind Snakes) 
  211. Yucatecan Blindsnake  (S)  ______ yp
    Typhlops microstomus 


    Family LEPTOTYPHLOPIDAE  (Slender Blind Snakes)

  212. Black Blindsnake  (S)  (*)  ______ yp  (also called Neotropical Slender Blindsnake)
    Leptotyphlops goudotii

  213. Western Threadsnake  (N)  ______  sn  (has been called Western Blindsnake)
    Leptotyphlops humilis

  214. New Mexico Threadsnake  (N)  ______  sn
    Leptotyphlops dissectus
  215. Texas Threadsnake  (N) ______  (has been called Texas Blindsnake)
    Leptotyphlops dulcis 


    Family BOIDAE (Boa Family, the Boids)

  216. Boa Constrictor  (S) ______ yp  (also called Imperial Boa)
    Boa constrictor




    A Boa Constrictor on a road in southeastern Mexico
         (photo by Peter Mooney)

  217. Rosy Boa  (N)  ______  sn  (also called Three-lined Boa)
     Charina trivirgata


    Family COLUBRIDAE  (Colubrid Snakes)
  218. Ring-necked Snake  (N)  ______  sn
    Diadophis punctatus
  219. Western Hog-nosed Snake  (N)  ______
    Heterodon nasicus
  220. Spotted Leaf-nosed Snake  (N) ______  sn
    Phyllorhynchus decuritatus
  221. Saddled Leaf-nosed Snake  (N) ______  sn
    Phyllorhynchus browni
  222. Eastern Racer  (N) ______
    Coluber constrictor
  223. Middle American Earth Snake  (S) ______
    Adelphicos quadrivigatus

  224. Rustyhead Snake  (S) ______
    Amastridium veliferum

  225. Mexican Snake Eater  (S) ______ yp  (in the Yucatan region, in a small area of far-southern Quintana Roo) 
    Clelia scytalina

  226. Two-spotted Snake  (S) ______ yp
    Coniophanes bipunctatus

  227. White-lipped Spotbelly Snake  (S) ______
    Coniophanes fissidens

  228. Black-striped Snake  (S) (*) ______ yp
    Coniophanes imperialis

  229. Peninsular Stripeless Snake  (S) ______ yp
    Coniophanes meridanus

  230. Five-striped Snake  (S) ______ yp
    Coniophanes quinquevittatus

  231. Schmidt's Black-striped Snake  (S) ______ yp
    Coniophanes schmidti

  232. Roadguard  (or Road Guarder)  (S) ______ yp
    Conophis lineatus
    Conophis l. lineatus      (in the upper Yucatan Peninsula)
    Conophis l. dunni      (at the base of the Yucatan Peninsula)
    Conophis l. concolor      (south Campeche)  

  233. Barred Forest Racer  (S) ______
    Dendrophidion vinitor

  234. Snail-eating Thirst Snake  (S) ______ yp  (also called Short-faced Snail Sucker)
    Dipsas brevifacies
  235. Brown Racer  (S) ______ yp  (also called Lizard-eater)
    Dryadophis melanolomus
  236. Indigo Snake  (S) (*) ______ yp
    Drymarchon corais
  237. Speckled Racer  (S) (*) ______ yp  (also called Guinea Hen Snake)
    Drymobius margaritiferus




    Speckled Racer
         (photo by Peter Mooney during the FONT tour in the Yucatan of Mexico in November 2008)
  238. Tropical Ratsnake  (S) (*) ______ yp  
    Elaphe flavirufa
         (Seen during the FONT November 2008 Mexican tour in a cave at a remote place in the central Yucatan Peninsula, called "La Cueva de las Serpientes Colgantes", "the Cave of the Hanging Snakes". 
    About 100 of these snakes are said to be in that cave, where also about a half-dozen species of bats occur. The snakes prey on the bats. It's said that these snakes never leave the cave. They were discovered there in 1994.
    The species ranges from Tamaulipas, Mexico south to northern Honduras, and on Corn Island off the coast of Nicaragua. At no place other than at the cave in the Yucatan, is it known to be restricted its entire life to the inside of a cave.) 




    Tropical Ratsnake
    (photo by Peter Mooney, in the cave during the November 2008 tour)     
       
  239. Cornsnake  (N) ______  sn
    Elaphe guttata
  240. Baja California Ratsnake  (N) ______  bc  (in Mexico, only in Baja California)
    Bogertophis rosaliae
  241. Trans-Pecos Ratsnake  (N) ______
    Bogertophis subocularis
  242. Glossy Snake  (N)  ______ sn
     Arizona elegans

  243. Gophersnake  (N) ______  sn
     Pituophis catenifer

  244. Western Patch-nosed Snake  (N) ______  sn
    Salvadora hexalepis
  245. Eastern (or Mountain) Patch-nosed Snake  (N) ______  sn
    Salvadora grahamiae
  246. Blotched Hooknose Snake  (S)  ______ yp
    Ficimia publia
  247. Keeled Earth Snake  (S) ______
    Geophis carinosus
  248. Blunt-headed Tree Snake  (S)  ______ yp  (also called Brown Blunt-headed Vine Snake)
    Imantodes cenchoa

  249. Yucatan Blunthead Snake  (S)  ______ yp
    Imantodes tenuissimus

  250. Central American Tree Snake  (S)  _____ yp
    Imantodes gemmistratus

  251. Milksnake  (N) (S) ______ yp  (also called Tropical Kingsnake)
    Lampropeltis triangulum

  252. Common Kingsnake  (N) ______  sn
    Lampropeltis getula

  253. California Mountain Kingsnake  (N) ______  bc
    Lampropeltis zonata

  254. Gray-banded Kingsnake  (N) ______  
    Lampropeltis alterna

  255. Sonoran Mountain Kingsnake  (N) ______  sn
    Lampropeltis pyromelana  
  256. Long-nosed Snake  (N)  ______  sn
     Rhinocheilus lecontei

  257. Cat-eyed Snake (S) ______ yp  (also called Rain Forest Cat-eyed Snake)
    Leptodeira frenata
  258. Northern Cat-eyed Snake  (S) ______ yp
    Leptodeira septentrionalis

  259. Green Treesnake  (S) ______ yp  (also called Parrot Snake)
    Leptophis ahaetulla  
  260. Green-headed Treesnake  (S)  ______ yp  (also called Mexican Green Treesnake or Mexican Parrot Snake)
    Leptophis mexicanus




     A Green-headed Treesnake photographed in the Yucatan of Mexico in March 2009
         (photo by Peter Mooney)

  261. Neotropical Whipsnake  (S) (*) ______ yp
    Masticophis mentovarius

  262. California Whipsnake  (N) ______ bc
    Masticophis lateralis

  263. Cape Whipsnake  (MXe) (N)  ______ bc  (only in southern Baja California)
    Masticophis aurigulus
  264. Striped Whipsnake  (N) ______
    Masticophis taeniatus

  265. Sonoran Whipsnake  (N) ______  sn
    Masticophis bilineatus

  266. Coachwhip  (N)  ______  sn
    Masticophis flagellum

  267. Plain-bellied Watersnake  (N) (*)  ______
    Nerodia eryhrogaster




    A Plain-bellied Watersnake swimming across a small river
         (photographed during a FONT tour in May 2010 by Karl Frafjord)

  268. Diamondback Watersnake  (S) ______ 
    Nerodia rhombifer
  269. Ringneck Coffee Snake  (S) ______
    Ninia diademata
  270. Red Coffee Snake  (S)   ______ yp  (also called Red-back Coffee Snake)
    Ninia sebae 

  271. Puffing Snake  (S) (*) ______ yp  (other names are "Bird-eating Snake" and "Neotropical Bird Snake") 
    Pseustes poecilonotus
    Pseustes p. poecilonotus

  272. Adorned Graceful Brown Snake  (S) ______ 
    Rhadinaea decorata
  273. Guatemalan Neckband Snake  (S)  ______ yp  (also called Shovel-toothed Snake)
    Scaphiodontophia annulatus

  274. Neotropical Ratsnake  (S)  ______ yp  (also called Peninsular Ratsnake)
    Senticolis triaspis      (became a genus in 1987)

  275. Green Ratsnake  (N) (*)  ______  sn
    Senticolis triaspis

  276. Slender Snail Sucker  (S) ______
    Sibon dimidiata
  277. Banded Snail Sucker  (S) ______ yp
    Sibon fasciata 

  278. Cloudy Snail Sucker  (S) ______ yp
    Sibon nebulata
  279. Pygmy Snail Sucker  (S) ______ yp
    Sibon sanniola 
  280. Terrestrial Snail Sucker  (S) ______ yp  (also called Sartorius's Snail Sucker)
    Sibon sartorii
  281. Tiger Treesnake  (S) (*)  ______ yp  (also called Tiger Ratsnake)
    Spilotes pullatus

  282. Degenhardt's Scorpion-eating Snake  (S) ______
    Stenorrhina degenhardtii
  283. Scorpion-eating Snake  (S)  ______ yp  (also called Freminville's Scorpion-eating Snake)
    Stenorrhina freminvillei




    A Scorpion-eating Snake photographed in the Yucatan of Mexico in March 2009
         (photo by Peter Mooney)
  284. DeKay's Snake  (S) ______
    Storeria dekayi
  285. Yucatan White-lipped Snake  (S) (*) ______ yp
    Symphimus mayae


     

    Yucatan White-lipped Snake
    (photo by Peter Mooney during the FONT tour in the Yucatan of Mexico in November 2008) 
  286. Checkered Gartersnake  (N) (S) ______ sn,yp
    Thamnophis marcianus
  287. Mexican Gartersnake  (N) ______  sn
    Thamnophis eques
  288. Black-necked Gartersnake  (N) ______  sn
    Thamnophis cyrtopsis
  289. Narrow-headed Gartersnake  (N) ______  sn
    Thamnophis rufipunctatus
  290. Terrestrial Gartersnake  (N) ______  (has been called Western Terrestrial Garter Snake)
    Thamnophis elegans
  291. Two-striped Gartersnake  (N) ______ bc  (in Mexico, only in Baja California)
    Thamnophis hammondii 
  292. Cape Gartersnake  (N) ______ 
    Thamnophis validus
  293. Ribbonsnake  (N) (S) ______ yp  (also called Western Ribbonsnake)
    Thamnophis proximus
  294. Groundsnake  (N)  ______  sn  (has been called Western Ground Snake)
    Sonora semiannulata
  295. Sonoran Shovel-nosed Snake  (N) ______  sn
    Chionactis palarostris 
  296. Western Shovel-nosed Snake  (N)  ______
    Chionactis occipitalis 
  297. Variable Sandsnake  (N)  ______  sn
    Chilomeniscus cinctus 
  298. Chihuahuan Hook-nosed Snake  (N)  ______  sn
    Gyalopion canum
  299. Thornscrub Hook-nosed Snake  (N)  ______  sn
    Gyalopion quadrangulare
  300. Orangebelly Swamp Snake  (S) ______ 
    Tretanorhinus nigoluteus

  301. Yucatan Centipede Snake  (S) ______  yp
    Tantilla cuniculator

  302. Blackbelly Centipede Snake  (S)  _____  yp
    Tantilla moesta

  303. Yucatan Dwarf Short-tailed Snake  (S)  _____  yp
    Tantilla canula

  304. Chihuahuan Black-headed Snake  (N) ______  sn
    Tantilla wilcoxi

  305. Plains Black-headed Snake  (N) ______
    Tantilla nigriceps

  306. California Black-headed Snake  (N) ______  bc
    Tantilla planiceps

  307. Southwestern Black-headed Snake  (N) ______
    Tantilla hobartsmithi

  308. Yaqui Black-headed Snake  (N) ______  sn
    Tantilla yaquia 
  309. Brown Vinesnake  (N) (S)  ______  sn,yp  (also called Neotropical Vinesnake or Mexican Vinesnake)
    Oxybelis aeneus
  310. Green Vinesnake  (S) ______ yp  (the range of this species is from Mexico to Argentina) 
    Oxybelis fulgidus




    Green Vine Snake
         (photo by Sally Brady)
  311. Western Lyresnake  (N)  ______  sn
     Trimorphodon biscutatus

  312. Nightsnake  (N)  ______  sn
    Hypsiglena torquata

  313. Baja California Night Snake  (MXe) (N)  ______  bc  (only in Baja California)
    Eridiphas slevini

  314. Calico False Coral Snake  (S) ______
    Oxyrhopus petola

  315. False Coral Snake  (S) ______ yp
    Urotheca elapoides 
  316. False Terciopelo  (S)  ______ yp  (also called False Fer-de-lance)
    Xenodon rabdocephalus


    Family ELAPIDAE  (Coral Snakes)  (VENOMOUS)

  317. Variable Coral Snake  (S)  ______ yp  (also called Many-ringed Coral Snake)
    Micrurus diastema




    Variable Coral Snake
    (photographed by Marie Gardner during the FONT tour in the Yucatan of Mexico in March 2009)
  318. Sonoran Coral Snake  (N) ______  sn
    Micruroides euryxanthus


    Family VIPERIDAE  (Viper Family)  (VENOMOUS)

  319. Yucatan Cantil  (S)  ______ yp
    Agkistrodon bilineatus

  320. Fer-de-lance  (S) (*)  ______ yp  (also called Terciopela) 
    Bothrops asper




    Fer-de-lance (or Terciopela)
         (photo by Peter Mooney, on a road at night, during the FONT tour in the Yucatan of Mexico in Nov 2008))

  321. Massasauga  (N) (*)  ______
    Sisgtrurus catenatus
  322. Tropical Rattlesnake  (S)  ______ yp  (also called Neotropical Rattlesnake)
    Crotalus durissus

  323. Twin-spotted Rattlesnake  (N) ______  sn
    Crotalus pricei

  324. Black-tailed Rattlesnake  (N) ______  sn
    Crotalus molossus

  325. Tiger Rattlesnake  (N) ______  sn
    Crotalus tigris

  326. Rock Rattlesnake  (N) ______
    Crotalus lepidus

     
  327. Ridge-nosed Rattlesnake  (N) ______  sn
    Crotalus willardi

  328. Western Rattlesnake  (N) ______
    Crotalus viridis

  329. Western Diamond-backed Rattlesnake  (N) ______  sn
    Crotalus atrox

  330. Red Diamond Rattlesnake  (N) ______
    Crotalus ruber

  331. Mohave Rattlesnake  (N) ______  sn
    Crotalus scutulatus

  332. Speckled Rattlesnake  (N) ______
    Crotalus mitchellii

  333. Sidewinder  (N) ______  sn
    Crotalus cerastes

  334. Baja California Rattlesnake  (MXe) (N) ______ bc  (only in Baja California)
    Crotalus enyo  

  335. Jumping Viper  (S) ______  (also called Jumping Pitviper)
    Atropoides nummifer

  336. Eyelash Viper  (S) ______  (also called Eyelash Palm-Pitviper)
    Bothriechis schlegeii

  337. Rainforest Hognose Pitviper  (S) ______
    Porthidium nasutum 
  338. Yucatan Hognosed Pitviper  (S)  ______ yp
    Porthidium yucatanicum


    Family PELAMIS  (Sea Snakes)  (VENOMOUS)

  339. Pelagic Sea Snake  ______  (in the Pacific Ocean)
    Pelamis platurus 



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