Animalia > Chordata > Amphibia > Caudata > Plethodontidae > Thorius > Thorius narisovalis

Thorius narisovalis (Upper Cerro pigmy salamander)

Language: Spanish

Wikipedia Abstract

Thorius narisovalis is a species of salamander in the family Plethodontidae. It is endemic to Mexico and only known from near its type locality, Cerro San Felipe, Oaxaca. Its natural habitats are cloud forests and mixed forests. It lives under bark or under fallen trees. The species is negatively impacted by habitat loss caused by logging, agriculture, and human settlement. It has, however, declined even in suitable habitat.
View Wikipedia Record: Thorius narisovalis

Endangered Species

Status: Critically Endangered
View IUCN Record: Thorius narisovalis

EDGE Analysis

The Upper Cerro pigmy salamander is fairly large for a Mexican pigmy salamander, and yet only grows to about 65 mm in total length. It has previously been found in the Parque Nacional Benito Suarez, and it thought to have declined by 80% over the last 15 years. It is probably threatened by habitat disturbance, as a result of agricultural expansion, human settlements, and logging. However, despite some good habitat remaining, recent surveys have been unsuccessful in locating this species. It is speculated that the adverse environmental impacts of a volcanic eruption, or even virulent disease (such as chytridiomycosis), might have contributed to the recent dramatic decline.
Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 18.79
EDGE Score: 5.76
View EDGE Record: Thorius narisovalis


Adult Length [1]  0.787 inches (2 cm)
Litters / Year [1]  1


Name Countries Ecozone Biome Species Report Climate Land
Oaxacan montane forests Mexico Neotropic Tropical and Subtropical Moist Broadleaf Forests
Sierra Madre de Oaxaca pine-oak forests Mexico Neotropic Tropical and Subtropical Coniferous Forests
Sierra Madre del Sur pine-oak forests Mexico Neotropic Tropical and Subtropical Coniferous Forests
Southern Pacific dry forests Mexico Neotropic Tropical and Subtropical Dry Broadleaf Forests
Tehuacán Valley matorral Mexico Neotropic Deserts and Xeric Shrublands

Biodiversity Hotspots

Name Location Endemic Species Website
Madrean Pine-Oak Woodlands Mexico, United States Yes

Range Map


Middle America;

External References



Attributes / relations provided by
1Oliveira, Brunno Freire; São-Pedro, Vinícius Avelar; Santos-Barrera, Georgina; Penone, Caterina; C. Costa, Gabriel. (2017) AmphiBIO, a global database for amphibian ecological traits. Sci. Data.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License