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List of critically endangered reptiles

Topic: Biology

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Critically endangered (CR) species face an extremely high risk of extinction in the wild.

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 196 critically endangered reptile species, including 17 which are tagged as possibly extinct.[1][2] 3.8% of all evaluated reptile species are listed as critically endangered. The IUCN also lists 12 reptile subspecies as critically endangered.

Of the subpopulations of reptiles evaluated by the IUCN, ten species subpopulations have been assessed as critically endangered.

Additionally 910 reptile species (18% of those evaluated) are listed as data deficient, meaning there is not sufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN.[3] While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed".[4]

This is a complete list of critically endangered reptile species and subspecies evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such. Species and subspecies which have critically endangered subpopulations (or stocks) are indicated.

Turtles and tortoises

There are 40 species, four subspecies, and three subpopulations of turtle assessed as critically endangered.

Cheloniids

Species

  • Hawksbill sea turtle (Eretmochelys imbricata)
  • Atlantic ridley sea turtle (Lepidochelys kempii)

Subpopulations

  • Loggerhead sea turtle (Caretta caretta) (3 subpopulations)

Platysternidae

Tortoises

Species

  • Radiated tortoise (Astrochelys radiata)
  • Angonoka tortoise (Astrochelys yniphora)
  • Santiago giant tortoise (Chelonoidis darwini)
  • Española giant tortoise (Chelonoidis hoodensis)
  • Burmese star tortoise (Geochelone platynota)
  • Desert tortoise (Gopherus agassizii)
  • Bolson tortoise (Gopherus flavomarginatus)
  • Elongated tortoise (Indotestudo elongata)
  • Forsten's tortoise (Indotestudo forstenii)
  • Home's hinge-back tortoise (Kinixys homeana)
  • Pancake tortoise (Malacochersus tornieri)
  • Asian forest tortoise (Manouria emys)
  • Geometric tortoise (Psammobates geometricus)
  • Spider tortoise (Pyxis arachnoides)
  • Flat-backed spider tortoise (Pyxis planicauda)
  • Egyptian tortoise (Testudo kleinmanni)

Subspecies

  • Testudo graeca nikolskii

Geoemydids

  • Southern river terrapin (Batagur affinis)
  • Northern river terrapin (Batagur baska)
  • Painted terrapin (Batagur borneoensis)
  • Three-striped roof turtle (Batagur dhongoka)
  • Red-crowned roofed turtle (Batagur kachuga)
  • Burmese roofed turtle (Batagur trivittata)
  • Yellow-headed box turtle (Cuora aurocapitata)
  • Bourret's box turtle (Cuora bourreti)
  • Indochinese box turtle (Cuora galbinifrons)
  • Guangxi box turtle (Cuora mccordi)
  • Shaanxi box turtle (Cuora pani)
  • Southern Vietnamese box turtle (Cuora picturata)
  • Golden coin turtle (Cuora trifasciata)
  • Yunnan box turtle (Cuora yunnanensis)
  • South Chinese box turtle (Cuora zhoui)
  • Yellow-headed temple turtle (Heosemys annandalii)
  • Arakan forest turtle (Heosemys depressa)
  • Giant Asian pond turtle (Heosemys grandis)
  • Sulawesi forest turtle (Leucocephalon yuwonoi)
  • Vietnamese pond turtle (Mauremys annamensis)
  • Yellow pond turtle (Mauremys mutica)
  • Chinese stripe-necked turtle (Mauremys sinensis)
  • Malaysian giant turtle (Orlitia borneensis)
  • Assam roofed turtle (Pangshura sylhetensis)
  • Four-eyed turtle (Sacalia quadriocellata)
  • Philippine forest turtle (Siebenrockiella leytensis)

Trionychids

Species

  • Asian narrow-headed softshell turtle (Chitra chitra)
  • Nubian flapshell turtle (Cyclanorbis elegans)
  • Leith's softshell turtle (Nilssonia leithii)
  • Yangtze giant softshell turtle (Rafetus swinhoei)

Subspecies

  • Black spiny softshell turtle (Apalone spinifera atra)

Subpopulations

  • African softshell turtle (Trionyx triunguis) (1 subpopulation)

Other turtles

Species

  • Roti Island snake-necked turtle (Chelodina mccordi)
  • Central American river turtle (Dermatemys mawii)
  • Madagascan big-headed turtle (Erymnochelys madagascariensis)
  • Bog turtle (Glyptemys muhlenbergii)
  • Colombian toad-headed turtle (Mesoclemmys dahli)
  • Hoge's side-necked turtle (Mesoclemmys hogei)
  • Magdalena River turtle (Podocnemis lewyana)
  • Western swamp turtle (Pseudemydura umbrina)
  • Flattened musk turtle (Sternotherus depressus)

Subspecies

  • Seychelles yellow-bellied mud turtle (Pelusios castanoides intergularis)
  • Seychelles black mud turtle (Pelusios subniger parietalis)

Subpopulations

  • Leatherback sea turtle (Dermochelys coriacea) (4 subpopulations)

Crocodilia species

  • Chinese alligator (Alligator sinensis)
  • Orinoco crocodile (Crocodylus intermedius)
  • Philippine crocodile (Crocodylus mindorensis)
  • Cuban crocodile (Crocodylus rhombifer)
  • Siamese crocodile (Crocodylus siamensis)
  • Gharial (Gavialis gangeticus)
  • Slender-snouted crocodile (Mecistops cataphractus)

Lizards

There are 110 species, four subspecies, and one subpopulation of lizard assessed as critically endangered.

Iguanids

Includes iguanas and related species.

Species

Subspecies

Subpopulations

Anguids

Includes slowworms, glass lizards, and alligator lizards.

  • Jalapa Arboreal alligator lizard (Abronia campbelli)
  • Frost's arboreal alligator lizard (Abronia frosti)
  • San Cristobal galliwasp (Celestus anelpistus) (possibly extinct)
  • Giant Hispaniolan galliwasp (Celestus warreni)
  • Montserrat galliwasp (Diploglossus montisserrati)
  • Jamaican giant galliwasp (Celestus occiduus) (possibly extinct)

Chameleons

Gekkonids

Wall lizards

  • Be'er Sheva fringe-fingered lizard (Acanthodactylus beershebensis)
  • Harran fringe-toed lizard (Acanthodactylus harranensis)
  • Tunisian fringe-fingered lizard (Acanthodactylus mechriguensis)
  • Spiny-tailed fringe-toed lizard (Acanthodactylus spinicauda)
  • Charnali lizard (Darevskia dryada)
  • Transcaucasian desert runner (Eremias pleskei)
  • La Palma giant lizard (Gallotia auaritae) (possibly extinct)
  • La Gomera giant lizard (Gallotia bravoana)
  • Tenerife speckled lizard (Gallotia intermedia)
  • Hierro giant lizard (Gallotia simonyi)
  • Salamanca rock lizard (Iberolacerta martinezricai)
  • Aeolian wall lizard (Podarcis raffonei)

Skinks

Other lizard species

Snakes

Species

Subspecies

  • Dipsas albifrons cavalheiroi
  • Sardinian grass snake (Natrix natrix cetti)
  • Natrix natrix schweizeri
  • Moldavian meadow viper (Vipera ursinii moldavica)

See also

References

  1. ↑ "IUCN Red List version 2016-2". International Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/. Retrieved 8 September 2016. 
  2. ↑ "Table 9: Possibly Extinct and Possibly Extinct in the Wild Species (IUCN Red List version 2016-2)". Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/about/summary-statistics. Retrieved 8 September 2016. 
  3. ↑ "Limitations of the Data". Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/initiatives/mammals/description/limitations. Retrieved 11 January 2016. 
  4. ↑ "2001 Categories & Criteria (version 3.1)". Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/static/categories_criteria_3_1. Retrieved 11 January 2016. 




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