Thread Snakes

It is endemic to the Brazilian state of Pará. It inhabits humid lowland tropical forests and is also found on plantations, in gardens, and near human settlements at elevations of up to 500 m.

It is found in Argentina, Bolivia, south-western Brazil, Paraguay, Uruguay, and possibly southern Peru. It is found grassland, shrubland, savanna, and forest.

It is known from the type locality in Huarmey Province, western Peru. It inhabits Andean mountain steppes at elevations of 2,940–3,090 m.

It is found in Colombia, French Guiana, Guyana, and southeastern Venezuela (Amazonas, Bolívar). It inhabits humid tropical forests.

It is known from a few specimens collected in the Cajamarca and Amazonas regions of northern Peru. It inhabits the dry forests of the Marañón Valley.

It is found in western and northern Honduras and along the Pacific coast of Nicaragua and Costa Rica. It inhabits dry tropical forests in the lowlands and humid tropical forests in the foothills at elevations of up to 1,340 m.

It is found in Argentina (Río Negro, Mendoza, La Pampa, and Córdoba), Bolivia (Beni), and Brazil (Rio Grande do Sul). It inhabits shrubland, grassland, and the savannas of the Monte, Espinal, and Chaco.

It is found in Mexico in coastal and foothill regions on Pacific slopes from Colima and Michoacan southward to the Isthmus of Tehuantepec.

It is found in northeastern Brazil, in the states of Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, and Bahia. It inhabits dry caatinga scrubland, occurring in the agreste and in humid coastal areas.

It is known from two localities in central Brazil, located in south-eastern Mato Grosso and western Goiás. t inhabits gallery forests surrounded by cerrado savannas.

It is endemic to San Salvador Island in The Bahamas, where it inhabits forest and shrubland.

It is found in north-eastern Peru. It inhabits humid lowland tropical forests at elevations of 100–200 m.

It is known only from Chacachacare Island, Venezuela. It inhabits dry tropical forests and open areas.

It is found in the Magdalena River valley of Colombia, along the Caribbean coast of Colombia and Venezuela, on the adjacent islands of Margarita and Trinidad, and along the coast of the Gulf of Panama in Panama.

It is found on the island of Cozumel off Mexico; on the Islas de la Bahía, Cayos Cochinos, and the Swan Islands off the coast of Honduras; and on the Colombian islands of San Andrés, Providencia, and Santa Catalina. It inhabits tropical forests and coconut groves.

It is found in northern Argentina, extreme southern Brazil, and Uruguay, where it inhabits forest and grassland habitats.

It is found on the Pacific coast of central Panama. It inhabits humid lowland tropical forests at elevations of up to 250 m.

It is found in El Salvador, Guatemala, Belize, Honduras, and southern Mexico. It occurs in a wide range of habitats, from savanna to montane rainforest.

It is found in southern Tamaulipas, Veracruz, and north-eastern Hidalgo, Mexico. It inhabits evergreen and semi-deciduous tropical forests and also occurs in savannas at elevations of up to 900 m.

It is known from several localities along the coast of Peru in the Lima and La Libertad regions. It inhabits the coastal Sechura Desert.

It is found in Mexico in the Sierra Madre del Sur Mountains in the states of Guerrero and Oaxaca. It inhabits pine–oak, deciduous, and semi-deciduous forests at elevations of 825–1,675 m.

It is known from the type locality in Celendín Province, Cajamarca Region, northern Peru, at an elevation of 2,053 m.

It is found on the eastern slopes of the Andes in extreme southern Bolivia (Tarija) and northern Argentina (Salta). It inhabits the humid tropical forests of the Yungas.

It is found along the Pacific coast from the Ecuadorian province of Manabí south to the Peruvian region of La Libertad. It inhabits coastal deserts and dry tropical forests, at altitudes up to 300 m.

It is found in northern Peru. It inhabits humid mountain rainforests at altitudes up to 2,350 m.

It is found on Trinidad in the Caribbean, and in South America, where it ranges from Guyana south to Brazil and north-western Peru. It inhabits humid lowland tropical forests, on plantations, in gardens, and near human settlements.

It is found on the Pacific coast of Peru, in the vicinity of Lima. It inhabits the coastal Sechura Desert and dry scrublands and is also found in parks, gardens, and on sandy beaches.

It is found on the western and eastern slopes of the highlands of the Peruvian Andes, from Cajamarca to Ancash. It inhabits high-altitude meadows at elevations of 2,000–3,300 m.

It is found in Argentina (Formosa and Chaco provinces), Brazil, and Paraguay.

It is known from the type locality in the vicinity of Cachachi-Moyan in the Cajabamba Province of northern Peru, at an elevation of 2,551 m.

It is endemic just to the northern portion of Mexico’s Yucatan Peninsula, in the states of Yucatán and Quintana Roo, at elevations of up to about 30 m.

It is known from the type locality in the Querocoto District of Chota Province in northern Peru, at an elevation of 2,069 m. It inhabits mountain bushes and fields.

It is known from the type locality in Pataz Province of northern Peru, at an elevation of 1,292 m.

It is found in French Guiana and Suriname. It inhabits primary tropical forests at elevations of 0–450 m.

It is endemic to the Samaná Peninsula in the Dominican Republic on the island of Hispaniola. It inhabits tropical forests, on plantations and in gardens and meadows.

It is found in the Cape Region of Baja California Sur and also on Isla Cerralvo in the Municipality of La Paz.

It is endemic to the south-western United States and adjacent northern Mexico.

It is native to the southwestern United States and northern Mexico. It is found in deserts and scrub where the soil is loose enough for burrowing.

It is found in the United States (southeastern Arizona, Texas, and New Mexico) and in Mexico (San Luis Potosí, northern Coahuila, Nuevo León, Durango, and Chihuahua).

It is found in Argentina, Bolivia, and Paraguay.

It is found in the Mexican states of Guerrero, Morelos, Oaxaca, and Puebla.

It is found in western Argentina, where it inhabits shrubland.

It is found in Bolivia, northern Brazil (Amazonas, Pará, Roraima), French Guiana, Guyana, Suriname, and south-eastern Venezuela. It inhabits forest at elevations of 0–500 m.

It is found in the Brazilian states of Amapá, Mato Grosso, and Pará, and in Suriname, where it inhabits savanna habitats.

It is found on Martinique, Saint Lucia, and Barbados in the Lesser Antilles.

It is endemic to the Caribbean island of Saint Lucia and inhabits forest at elevations of 40–60 m.

It is endemic to the island of Barbados in the Caribbean Sea.

It is found in Mali, Guinea, Ivory Coast, Burkina Faso, Ghana, Togo, Benin, Nigeria, Niger, and Chad, and possibly also in Cameroon. It inhabits wet and dry savannas at elevations of up to 700 m.

It is found in Cameroon, Central African Republic, Ghana, Nigeria, and Togo.

It is found in West Africa in Senegal (Bonghari and Casamance) and Guinea (Kouroussa and Youkounkoun). It inhabits dry savannas and gallery forests at elevations of 0–450 m.

It is endemic to southern Mali.

It is found in Ecuador at Abituagua, Balzapamba, Baños de Agua Santa, and Zamora. It inhabits forest at elevations of 1,000–1,800 m.

It is found in the Brazilian states of Bahia, Ceará, Goiás, Maranhão, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraíba, Piauí, Rondônia, and Tocantins, where it inhabits cerrado savannas and dry caatinga thickets.

It is known from the state of Tocantins, Brazil, where it lives in cerrado savannas.

It is known from two localities in the Colombian Andes.

It is found in Guyana, Suriname, and the Brazilian state of Roraima, and possibly also in south-eastern Venezuela. It inhabits humid tropical forests and savannas at elevations of 20–300 m.

It is found in the Atlántico Department of Colombia. It inhabits forest and shrubland at elevations of up to 800 m, but has also been found in rural gardens.

It is found in the Brazilian states of Bahia, Minas Gerais, and Tocantins, where it inhabits cerrado savannas.

It is endemic to Brazil and is found in the Serra do Espinhaço Mountains in the state of Minas Gerais, at elevations of up to 1,700 m. It inhabits high-altitude meadows.

It is found in the Colombian departments of Antioquia, Caldas, and Valle del Cauca. It inhabits forest at elevations of 1,600–2,200 m.

It is endemic to Brazil, where it is found in the Distrito Federal and the Brazilian states of Bahia, Goiás, and Mato Grosso. It inhabits grassland and savanna.

It is known only from Santander Department, Colombia. It inhabits humid mountain rainforests at elevations of 1,750–1,824 m.

It is found in the Brazilian states of Bahia, Espírito Santo, Minas Gerais, and Rio de Janeiro. It inhabits Atlantic forests and caatinga thickets.

It is endemic to Ecuador.

It is found in southern Namibia and western South Africa. It inhabits thickets of bushes.

It is found in Namibia and north-western South Africa. It inhabits the Namib Desert, semi-deserts, and dry savannas at elevations of 50–1,500 m.

It is found in north-western Namibia and southern Angola. It inhabits dry savannas at elevations of 300–1,200 m.

It is found in southern Angola, inhabiting dry savannas with spurges and baobabs, as well as wooded miombo savannas. It occurs at elevations of up to 1,300 m.

It is endemic to the southwestern coast of Angola. It inhabits coastal sand dunes covered with shrub vegetation dominated by spurges.

It is known from a number of localities in Gambia, southern Morocco, Algeria, southern Tunisia, Mauritania, northern Mali, and north-eastern Niger. It inhabits the Sahara Desert, where it is found in oases and wadis at elevations of up to 1,100 m.

It is found in India, Pakistan, Afghanistan, southern Iran, and possibly the Arabian Peninsula.

It is found in southwestern Saudi Arabia and southwestern Yemen at elevations of 1,350–1,460 m.

It is found in Egypt, Eritrea, Ethiopia, Mauritania, Niger, Somalia, Sudan, Uganda, and possibly in Libya. It inhabits dry shrubbery, as well as fields and gardens near water bodies, at elevations of up to 400 m.

It is known from a number of localities in south-eastern Tanzania and northern Malawi and Mozambique. It inhabits miombo woodlands at elevations of up to 130 m.

It is found in eastern Botswana, Kenya, Mozambique, southern Somalia, north-eastern South Africa, Tanzania, Zambia, and Zimbabwe. It inhabits savannas.

It is found in isolated populations across northern Africa and in south-western Asia. It inhabits Mediterranean thickets, semi-deserts, and dry savannas, and is found near human settlements at elevations of up to 1,250 m.

It is endemic to the island of Socotra. It inhabits a variety of habitats, including palm groves, open sandy areas, rocky areas, shrub thickets, rocky hills with little vegetation, and wadis.

It is found in West Africa (Ghana, Togo, Nigeria, and possibly Guinea) and in Middle Africa (Central African Republic). It inhabits wet savanna and dry forest.

It is endemic to the southern Arabian Peninsula and the Horn of Africa. It inhabits savannas and agricultural lands with moist soil at elevations of 50–1,525 m.

It is found in Ethiopia and Kenya. It inhabits dry meadows and dry acacia and commiphora thickets.

It is found in Senegal, Guinea, and Uganda. It inhabits agricultural areas.

It is endemic to the island of Socotra in Yemen. It inhabits forest and shrubland at elevations from sea level to 995 m.

It is a genus of snakes in the family Leptotyphlopidae. Representatives of this genus occur in Africa, West Asia, and South Asia.

It is found in central areas of the Eastern Cape Province of South Africa and elsewhere in north-eastern and eastern South Africa, as well as in Lesotho and Eswatini. It inhabits meadows at elevations of up to 1,600 m.

It is found in Eswatini, southern Mozambique, and South Africa. It inhabits savanna and shrubland at elevations of 250–1,600 m

It is found in the Democratic Republic of the Congo, Kenya, Sudan, Tanzania, Uganda, and northern Zambia. It inhabits savanna and shrubland at elevations of 650–1,370 m.

The species occurs in southern Zambia and Malawi, northern and eastern Zimbabwe, central and southern Mozambique, north-eastern South Africa, and Eswatini, and possibly also eastern Botswana. It inhabits dry tropical forests, wet savannas and grasslands, under stones and fallen leaves, and in termite mounds.

It is endemic to South Africa, occurring in southern Limpopo and northern Mpumalanga. It inhabits high-altitude meadows, under rocks, and old termite mounds at elevations of 1,300–1,700 m.

It occurs in southern and central Africa, with confirmed records from Angola, Democratic Republic of the Congo, and Zambia. Its preferred habitat is savannas, but it may also be found in disturbed or artificial terrestrial environments.

It is found exclusively along the coast of southern Kenya and northern Tanzania in East Africa. It inhabits coastal forests and humid savannas at altitudes of up to 100 m.

It is found on the mountain plateaus of the East African Plateau in Kenya and Tanzania. It inhabits wet and dry savannas, grasslands, and shrublands at altitudes of up to 1,500 m.

It is endemic to the Western and Eastern Cape Provinces of South Africa. It inhabits bushes, meadows, and savannas.

It is found in Angola, Namibia, Botswana, Zimbabwe, South Africa, Eswatini, and western Lesotho. It inhabits wet and dry savannas, grasslands, and coastal scrub.

It is endemic to South Africa, occurring in the provinces of KwaZulu-Natal and the Eastern Cape. It inhabits exclusively wooded areas.

It is found in the Lubombo Mountains on the border of Eswatini and Mozambique, and probably also in South Africa. It inhabits montane savannas at altitudes of 125–700 m.

This is a genus of nonvenomous blind snakes, endemic to Africa and found throughout the continent.

It is endemic to Kenya. It inhabits the transition zone between East African evergreen shrublands and Acacia–Commiphora bushland at an altitude of 1,300 m.