Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Mantellidae

Scientific Name: Gephyromantis horridus
Species Authority: (Boettger, 1880)
Common Name(s):
English Boettger's Grainy Frog
Arthroleptis horridus (Boettger, 1880)
Hemimantis horrida Boettger, 1880
Laurentomantis horrida (Boettger, 1880)
Mantidactylus horridus (Boettger, 1880)
Trachymantis horrida (Boettger, 1880)
Taxonomic Source(s): Frost, D.R. 2013. Amphibian Species of the World: an Online Reference. Version 5.6 (9 January 2013). Electronic Database. American Museum of Natural History, New York, USA. Available at:
Taxonomic Notes: This species was recently revised by Vences et al. (2002).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Andreone, F. & Glaw, F.
Reviewer(s): Stuart, S.N., Chanson, J.S. & Cox, N.A.
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat in northern Madagascar.
Previously published Red List assessments:
2004 Endangered (EN)

Geographic Range [top]

Range Description: This species is known only from northern Madagascar, at Montagne d'Ambre, Tsaratanana and Nosy Be Island. Following Vences et al. (2002b) records from eastern Madagascar are not considered here. It has been recorded at 300-1,400m asl.
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is a rare species, with very few records.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It inhabits lowland and montane rainforest, and is not found in disturbed areas. It probably breeds by direct development, but this requires confirmation.
Systems: Terrestrial

Threats [top]

Major Threat(s): The major threat is habitat loss due to subsistence agriculture, timber extraction, charcoal manufacture, the invasive spread of eucalyptus, livestock grazing, and expanding human settlements.

Conservation Actions [top]

Conservation Actions: It occurs in at least two protected areas: the Réserve Naturelle Intégrale du Tsaratanana and Parc National de Montagne d'Ambre.

Citation: Andreone, F. & Glaw, F. 2008. Gephyromantis horridus. The IUCN Red List of Threatened Species 2008: e.T57489A11634993. . Downloaded on 10 October 2015.
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