Thorius magnipes 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Caudata Plethodontidae

Scientific Name: Thorius magnipes Hanken & Wake, 1998
Common Name(s):
English Big-footed Thorius
Taxonomic Source(s): Frost, D.R. 2014. Amphibian Species of the World: an Online Reference. Version 6 (27 January 2014). New York, USA. Available at: (Accessed: 27 January 2014).

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii,v) ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Gabriela Parra-Olea, David Wake, James Hanken
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because its Extent of Occurrence is less than 100 km2, all individuals are in a single location, and there is continuing decline in the extent and quality of its habitat, and in the number of mature individuals, in central Veracruz, Mexico.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs above Acultzingo, in central Veracruz, adjacent to the border with Puebla, Mexico, at 2,450-2,800m asl.
Countries occurrence:
Additional data:
Number of Locations:1
Lower elevation limit (metres):2450
Upper elevation limit (metres):2800
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It has always been rare, but seems to have declined further. Six individuals were collected in 2003 after not having been seen for 20 years, despite repeated searches (J. Hanken pers. comm. 2007).
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It inhabits pine-oak forest, living in bromeliads, having been found in leaf axils and on the ground, under rocks and leaf-litter, and inside piles of wood chips. It is not found in degraded habitats. It is terrestrial and reproduces by direct development.

Threats [top]

Major Threat(s): The main threat is alteration of the original forest habitat, due to logging, livestock, and subsistence agriculture.

Conservation Actions [top]

Conservation Actions: It has not been found in any protected areas, and habitat protection and maintenance is an urgent priority.

Citation: Gabriela Parra-Olea, David Wake, James Hanken. 2008. Thorius magnipes. The IUCN Red List of Threatened Species 2008: e.T59416A11935579. . Downloaded on 24 May 2018.
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