Gephyromantis horridus


Taxonomy [top]

Kingdom Phylum Class Order Family

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 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.

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.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is a rare species, with very few records.
Population Trend: Decreasing

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.

Bibliography [top]

Blommers-Schlösser, R.M.A. and Blanc, C.P. 1991. Amphibiens (première partie). Fauna de Madagascar: 1-379.

Glaw, F. and Vences, M. 1994. A Fieldguide to the Amphibians and Reptiles of Madagascar. Second Edition. Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn.

Glaw, F. and Vences, M. 2007. A Fieldguide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences & Glaw Verlag, Cologne.

IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: (Accessed: 5 October 2008).

Raxworthy, C.J. and Nussbaum, R.A. 1994. A rainforest survey of the amphibians, reptiles, and small mammals at Montagne d'Ambre, Madagascar. Biological Conservation: 65-73.

Vences, M., Glaw, F., Andreone, F., Jesu, R. and Schimmenti, G. 2002. Systematic revision of the enigmatic Malagasy broad-headed frogs (Laurentomantis Dubois, 1980), and their phylogenetic position within the endemic mantellid radiation of Madagascar. Contributions to Zoology: 191-212.

Citation: Andreone, F. & Glaw, F. 2008. Gephyromantis horridus. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 02 September 2015.
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