''Atractus trihedrurus'' is a species of snake in the family

Colubridae Colubridae (, commonly known as colubrids , from , 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the family date back to the Late Eocene epoch, with earlier origins suspected. C ...

. In English the species goes by the

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often con ...

southern ground snake. ''A. trihedrurus'' reproduces sexually through

oviparity Oviparous animals are animals that reproduce by depositing fertilized zygotes outside the body (i.e., by laying or spawning) in metabolically independent incubation organs known as eggs, which nurture the embryo into moving offsprings kno ...

. It can be found in southern

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

and is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the Atlantic Forest. The

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

lists the ''A. trihedrurus'' as least concern, while agricultural and mining have a impacted on the species. This species occurs in protected regions, the habitat decline is very low, and the species has a extent occurrence of around 36,000 km^2.

References

trihedrurus Endemic reptiles of Brazil Snakes of Brazil Fauna of the Atlantic Forest Reptiles described in 1926 Taxa named by Afrânio Pompílio Gastos do Amaral {{Dipsadinae-stub