Gephyromantis webbi


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Gephyromantis webbi
Species Authority: (Grandison, 1953)
Mantidactylus webbi (Grandison, 1953)

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2008-01-01
Assessor/s: Franco Andreone, Miguel Vences
Reviewer/s: Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2 and its Area of Occupancy is less than 500 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat in northeastern Madagascar.

Geographic Range [top]

Range Description: This species occurs around the Antongila Bay and on the island of Nosy Mangabe in north-eastern Madagascar. Records from Andohahela in south-eastern Madagascar require confirmation, and are not included here. It has been recorded from sea level up to 100m asl.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is locally common.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It inhabits very low altitude rainforest, living along rocky streams among boulders and moss, and is intolerant of disturbed habitat. It breeds along streams under mossy boulders, the eggs being laid on rocks.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): The major threat is habitat loss due to subsistence agriculture, timber extraction, and expanding human settlements. Forest loss is particularly severe on the coast of mainland Madagascar.

Conservation Actions [top]

Conservation Actions: It occurs in the Réserve Spéciale de Nosy Mangabe, but is not yet confirmed from Parc National de Masoala.
Citation: Franco Andreone, Miguel Vences 2004. Gephyromantis webbi. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 17 April 2014.
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