Hyperolius riggenbachi

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AMPHIBIA ANURA HYPEROLIIDAE

Scientific Name: Hyperolius riggenbachi
Species Authority: Nieden, 1910

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor(s): Arne Schiøtz, Jean-Louis Amiet
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Justification:
Listed as Vulnerable because its Extent of Occurrence is less than 20,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat in Cameroon and Nigeria.

Geographic Range [top]

Range Description:This species is known from the Obudu and Mambilla Plateaus of eastern Nigeria, and the Bamenda Highlands, and the Adamawa Plateau (at Ngaouyanga and Banguve), western and central Cameroon. Two subspecies occur: H. r. riggenbachi and H. r. hieroglyphicus, the latter occurring in the Bamenda Highlands and on the Obudu Plateau, in an enclave surrounded by the former subspecies. Its altitudinal range is 900-1,800m asl.
Countries:
Native:
Cameroon; Nigeria
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: It is a very common species.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It lives in wetlands and small wooded watercourses in montane grassland. Males call at dusk from the stems of waterside plants. It breeds in still water near streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): It is probably affected by the ongoing loss of its montane grassland, wetland and stream habitat due to small-scale agricultural activities and wood collection, as well as human settlement.

Conservation Actions [top]

Conservation Actions: It is not known to occur in any protected areas. Improved habitat protection at sites where this species is known to occur is needed.

Bibliography [top]

Amiet, J.-L. 1973. Notes faunistiques, ethologistiques et ecologistiques sur quelques amphibiens anoures du Cameroun (2e Serie). Annales de la Faculté des Sciences du Cameroun: 135-161.

Böhme, W. and Schneider, B. 1987. Zur Herpetofaunistik Kameruns (III) mit Beschreibung einer neuen Cardioglossa (Anura: Arthroleptidae). Bonner Zoologische Beiträege: 241-263.

Gartshore, M.E. 1986. The status of the montane herpetofauna of the Cameroon highlands. In: Stuart, S.N. (ed.), Conservation of Cameroon Montane Forests, pp. 204-240. International Council for Bird Preservation, Cambridge, U.K.

IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.

Joger, U. 1982. Zur Herpetofaunistik Kameruns (II). Bonner Zoologische Beiträege: 313-342.

Laurent, R.F. 1961. Note sur les Hyperolius et quelques Afrixalus (Salienta) du Musee de Berlin. Revue de Zoologie et de Botanique Africaines: 65-96.

Perret, J.-L. 1962. Revision des types de Leptopelis et note sur quelques Hyperolius (Amphibia Salienta) de la region camerounais, conserves au Museum de Berlin. Revue de Zoologie et Botanie Africaine: 235-246.

Perret, J.-L. 1966. Les Amphibiens du Cameroun. Zoologische Jahrbuecher fuer Systematik: 289-464.

Schiøtz, A. 1967. The treefrogs (Rhacophoridae) of West Africa. Spolia Zoologica Musei Hauniensi 25: 1-346.

Schiøtz, A. 1999. Treefrogs of Africa. Edition Chimaira, Frankfurt am Main.


Citation: Arne Schiøtz, Jean-Louis Amiet 2004. Hyperolius riggenbachi. In: The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 02 September 2014.
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