''Thorius narismagnus'' is a species of

salamander Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All t ...

in the family

Plethodontidae Plethodontidae, or lungless salamanders, are a family of salamanders. With over 500 species, lungless salamanders are by far the largest family of salamanders in terms of their diversity. Most species are native to the Western Hemisphere, from B ...

. It 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 San Martin Tuxtla volcano, in the

Sierra de los Tuxtlas The Sierra de Los Tuxtlas (Tuxtlas Mountains) are a volcanic belt and mountain range along the southeastern Veracruz Gulf of Mexico, Gulf coast in Eastern Mexico. The Biósfera Los Tuxtlas, Los Tuxtlas Biosphere Reserve (Biósfera Los Tuxtlas) in ...

range in southern

Veracruz Veracruz, formally Veracruz de Ignacio de la Llave, officially the Free and Sovereign State of Veracruz de Ignacio de la Llave, is one of the 31 states which, along with Mexico City, comprise the 32 Political divisions of Mexico, Federal Entit ...

state, Mexico. Its common name is San Martin pigmy salamander. Natural

habitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...

s of ''Thorius narismagnus'' are lowland and intermediate tropical forests. It occurs under rotten logs and among leaf-litter, and especially under fallen

bromeliad The Bromeliaceae (the bromeliads) are a Family (biology), family of monocot flowering plants of about 80 genera and 3700 known species, native mainly to the Tropics, tropical Americas, with several species found in the American subtropics and on ...

s. This species had not been seen since 1970s, until it was rediscovered in 2012. It has suffered from

habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...

, but this might not suffice to explain the disappearance of this species.

References

narismagnus Endemic amphibians of Mexico Endemic fauna of Los Tuxtlas Taxonomy articles created by Polbot Amphibians described in 1955 {{Plethodontidae-stub