Bradytriton silus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Bradytriton silus
Species Authority: Wake and Elias, 1983

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B2ab(i,ii,iii) ver 3.1
Year Published: 2004
Date Assessed: 2008-01-01
Assessor/s: Manuel Acevedo, David Wake, Paul Elias, Sean Rovito, Carlos Vasquez, Ted Papenfuss, Paul Elias
Reviewer/s: Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because its Area of Occupancy is probably less than 10km2, all individuals are in a single sub-population, and the extent of its forest habitat is declining.

Geographic Range [top]

Range Description: This extremely distinctive species is known only from the immediate vicinity of the type locality in extreme north-western Guatemala, on the eastern slopes of the Sierra de los Cuchumatanes, at 1,310m asl. There has been little nearby sampling and the species may range more widely within the escarpment.
Possibly extinct:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The species is known only from 12 specimens collected at the type locality. It has not been seen since 1976, despite recent searches.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It has been collected in both disturbed and undisturbed wet forest (approximately 6,000mm annual precipitation). The animals were found under pieces of wood and logs. It presumably breeds by direct development and is not dependent upon water.
Systems: Terrestrial

Threats [top]

Major Threat(s): There is severe habitat loss taking place at the type locality due to the settlement of refugees and expanding agriculture.

Conservation Actions [top]

Conservation Actions: This species has not been recorded from any protected areas. Surveys are urgently needed to establish its current population status.
Citation: Manuel Acevedo, David Wake, Paul Elias, Sean Rovito, Carlos Vasquez, Ted Papenfuss, Paul Elias 2004. Bradytriton silus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 20 April 2014.
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