Typhlops hectus

Typhlops hectus (common names: Tiburon Peninsula blind snake,[1] Thomas's worm snake [3]) is a species of snake in the family Typhlopidae.[4][5][3] It is endemic to southwestern Haiti and is known from the Tiburon Peninsula and the island of Grand Cayemite, with an isolated record from Gonâve Island.[1] Specimens of uncertain status are known further northeast, in an area extending into the Dominican Republic; whether these belong to Typhlops hectus or an undescribed species is pending further investigations.[6]

Tiburon Peninsula Blindsnake
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Typhlopidae
Genus: Typhlops
T. hectus
Binomial name
Typhlops hectus
Thomas, 1974[2]


The total length in adults varies between 135–218 mm (5.3–8.6 in).[6] The tail is short: the 192 mm long holotype had a 5 mm tail. There are 284–328 mid-dorsal scales. Coloration varies from pale gray to tan. In some specimens, the coloration is bicolor with a sharp mid-lateral transition just one or two scale rows wide, from the pigmented dorsum to the unpigmented venter. In other specimens, the transition occurs closer to the venter, with some specimens being almost entirely pigmented.[2]

Typhlops hectus is oviparous.[3]

Habitat and conservation

Typhlops hectus is a fossorial species that occurs in a range of habitats including various types of forests (pine forests, and semi-deciduous and broad-leaved evergreen rainforests), semi-xeric scrub woods, edges of cane fields, and open fields and yards. It occurs from sea level to about 800 m (2,600 ft) above sea level.[1]

Typhlops hectus is an occasionally encountered species. Its population is considered to be severely fragmented. It is threatened by habitat loss caused by agriculture expansion, charcoal production, and wood harvesting.[1]


  1. ^ a b c d e Landestoy, M.; Hedges, B.; Inchaustegui, S. (2016). "Typhlops hectus". IUCN Red List of Threatened Species. 2016: e.T178705A77339745. doi:10.2305/IUCN.UK.2016-3.RLTS.T178705A77339745.en.
  2. ^ a b Thomas, R. (1974). "A new species of Typhlops (Serpentes: Typhlopidae) from Hispaniola". Proceedings of the Biological Society of Washington. 87: 11–18.
  3. ^ a b c Typhlops hectus at the Reptarium.cz Reptile Database. Accessed 20 April 2017.
  4. ^ "Typhlops". Integrated Taxonomic Information System. Retrieved August 15, 2010.
  5. ^ McDiarmid, Roy W.; Campbell, Jonathan A.; Touré, T'Shaka A. (1999). Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists' League. 511 pp. ISBN 978-1-893777-00-2.
  6. ^ a b Thomas, R.; Hedges, S.B. (2007). "Eleven new species of snakes of the genus Typhlops (Serpentes: Typhlopidae) from Hispaniola and Cuba" (PDF). Zootaxa. 1400: 1–26. doi:10.11646/zootaxa.1400.1.1.
IUCN Red List vulnerable species (Animalia)

In August 2018, the IUCN Red List of Threatened Species identified 6086 Vulnerable species, subspecies and varieties, stocks and sub-populations in the Animalia kingdom.

List of endangered reptiles

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 382 endangered reptile species. 7.4% of all evaluated reptile species are listed as endangered.

The IUCN also lists nine reptile subspecies as endangered.

Of the subpopulations of reptiles evaluated by the IUCN, one species subpopulation has been assessed as endangered.

For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of exintction". An even higher risk is faced by critically endangered species, which meet the quantitative criteria for endangered species. Critically endangered reptiles are listed separately. There are 578 reptile species which are endangered or critically endangered.

Additionally 910 reptile species (18% of those evaluated) are listed as data deficient, meaning there is insufficient 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. 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."This is a complete list of endangered reptile species and subspecies evaluated by the IUCN. Species and subspecies which have endangered subpopulations (or stocks) are indicated.

List of typhlopid species and subspecies

This is a list of all genera, species and subspecies of the family Typhlopidae, otherwise referred to as typical blind snakes, or typhlopids. It follows the taxonomy currently provided by ITIS, which is based on the continuing work of Dr. Roy McDiarmid.


Acutotyphlops infralabialis

Acutotyphlops kunuaensis

Acutotyphlops solomonis

Acutotyphlops subocularis


Cyclotyphlops deharvengi

Ramphotyphlops, long-tailed blind snakes

Ramphotyphlops acuticaudus, Palau blind snake

Ramphotyphlops affinis

Ramphotyphlops albiceps

Ramphotyphlops angusticeps

Ramphotyphlops australis, southern blindsnake

Ramphotyphlops batillus

Ramphotyphlops bituberculatus

Ramphotyphlops braminus, brahminy blind snake

Ramphotyphlops broomi

Ramphotyphlops centralis

Ramphotyphlops chamodracaena

Ramphotyphlops cumingii

Ramphotyphlops depressus

Ramphotyphlops diversus

Ramphotyphlops endoterus

Ramphotyphlops erycinus

Ramphotyphlops exocoeti, Christmas Island blind snake

Ramphotyphlops flaviventer

Ramphotyphlops grypus

Ramphotyphlops guentheri

Ramphotyphlops hamatus

Ramphotyphlops howi

Ramphotyphlops kimberleyensis

Ramphotyphlops leptosomus

Ramphotyphlops leucoproctus

Ramphotyphlops ligatus

Ramphotyphlops lineatus

Ramphotyphlops lorenzi

Ramphotyphlops margaretae

Ramphotyphlops micromma

Ramphotyphlops minimus

Ramphotyphlops multilineatus

Ramphotyphlops nigrescens

Ramphotyphlops olivaceus

Ramphotyphlops pilbarensis

Ramphotyphlops pinguis

Ramphotyphlops polygrammicus

Ramphotyphlops polygrammicus brongersmai

Ramphotyphlops polygrammicus elberti

Ramphotyphlops polygrammicus florensis

Ramphotyphlops polygrammicus polygrammicus

Ramphotyphlops polygrammicus undecimlineatus

Ramphotyphlops proximus

Ramphotyphlops silvia

Ramphotyphlops similis

Ramphotyphlops supranasalis

Ramphotyphlops tovelli

Ramphotyphlops troglodytes

Ramphotyphlops unguirostris

Ramphotyphlops waitii

Ramphotyphlops wiedii

Ramphotyphlops willeyi

Ramphotyphlops yampiensis

Ramphotyphlops yirrikalae


Rhinotyphlops acutus

Rhinotyphlops anomalus

Rhinotyphlops ataeniatus

Rhinotyphlops boylei

Rhinotyphlops caecus

Rhinotyphlops crossii

Rhinotyphlops debilis

Rhinotyphlops erythraeus

Rhinotyphlops feae

Rhinotyphlops gracilis

Rhinotyphlops graueri

Rhinotyphlops kibarae

Rhinotyphlops lalandei

Rhinotyphlops leucocephalus

Rhinotyphlops lumbriciformis

Rhinotyphlops newtonii

Rhinotyphlops pallidus

Rhinotyphlops praeocularis

Rhinotyphlops rufescens

Rhinotyphlops schinzi

Rhinotyphlops schlegelii

Rhinotyphlops schlegelii brevis

Rhinotyphlops schlegelii mucruso

Rhinotyphlops schlegelii petersii

Rhinotyphlops schlegelii schlegelii

Rhinotyphlops scorteccii

Rhinotyphlops simoni

Rhinotyphlops somalicus

Rhinotyphlops stejnegeri

Rhinotyphlops sudanensis

Rhinotyphlops unitaeniatus

Rhinotyphlops wittei

Typhlops, Blind snakes

Typhlops andamanensis

Typhlops angolensis

Typhlops arenarius

Typhlops ater

Typhlops beddomii

Typhlops bibronii

Typhlops biminiensis

Typhlops biminiensis biminiensis

Typhlops biminiensis paradoxus

Typhlops bipartitus

Typhlops bisubocularis

Typhlops bothriorhynchus

Typhlops boulengeri

Typhlops brongersmianus

Typhlops canlaonensis

Typhlops capitulatus

Typhlops cariei

Typhlops castanotus

Typhlops catapontus

Typhlops caymanensis

Typhlops ceylonicus

Typhlops coecatus

Typhlops collaris

Typhlops comorensis

Typhlops congestus

Typhlops conradi

Typhlops costaricensis

Typhlops cuneirostris

Typhlops decorosus

Typhlops decorsei

Typhlops depressiceps

Typhlops diardii

Typhlops domergnei

Typhlops dominicanus

Typhlops dominicanus dominicanus

Typhlops dominicanus guadeloupensis

Typhlops elegans

Typhlops epactius

Typhlops exiguus

Typhlops floweri

Typhlops fornasinii

Typhlops fredparkeri

Typhlops giadinhensis

Typhlops gierrai

Typhlops gonavensis

Typhlops granti, Grant's blind snake

Typhlops grivensis

Typhlops hectus

Typhlops hedraeus

Typhlops hypogius

Typhlops hypomethes, coastal blindsnake

Typhlops hypsobothrius

Typhlops inornatus

Typhlops jamaicensis

Typhlops jerdoni

Typhlops khoratensis

Typhlops klemmeri

Typhlops koekkoeki

Typhlops koshunensis

Typhlops kraalii

Typhlops lankaensis

Typhlops lehneri

Typhlops leucomelas

Typhlops leucostictus

Typhlops lineolatus

Typhlops loveridgei

Typhlops lumbricalis

Typhlops luzonensis

Typhlops madagascariensis

Typhlops malcolmi

Typhlops manilae

Typhlops manni

Typhlops marxi

Typhlops mcdowelli

Typhlops microstomus

Typhlops minuisquamus

Typhlops mirus

Typhlops monastus

Typhlops monastus geotomus

Typhlops monastus monastus

Typhlops monensis, Mona blind snake

Typhlops mucronatus

Typhlops oatesii

Typhlops obtusus

Typhlops ocularis

Typhlops oligolepis

Typhlops pammeces

Typhlops paucisquamus

Typhlops platycephalus, flat-headed blindsnake

Typhlops platyrhynchus

Typhlops porrectus

Typhlops punctatus

Typhlops punctatus liberiensis

Typhlops punctatus punctatus

Typhlops pusillus

Typhlops reticulatus

Typhlops reuteri

Typhlops richardii, Richard's blind snake

Typhlops rondoensis

Typhlops rostellatus, Puerto Rican wetland blind snake

Typhlops ruber

Typhlops ruficaudus

Typhlops schmidti

Typhlops schmidti schmidti

Typhlops schmidti wilsoni

Typhlops schmutzi

Typhlops schwartzi

Typhlops siamensis

Typhlops socotranus

Typhlops steinhausi

Typhlops sulcatus, sulcate blind snake

Typhlops syntherus

Typhlops tasymicris

Typhlops tenebrarum

Typhlops tenuicollis

Typhlops tenuis

Typhlops tetrathyreus

Typhlops thurstoni

Typhlops tindalli

Typhlops titanops

Typhlops trangensis

Typhlops trinitatus, Trinidad worm snake

Typhlops uluguruensis

Typhlops unilineatus

Typhlops veddae

Typhlops vermicularis

Typhlops violaceus

Typhlops wilsoni

Typhlops yonenagae

Typhlops zenkeri


Xenotyphlops grandidieri

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