Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Ptychadenidae

Scientific Name: Ptychadena mahnerti
Species Authority: Perret, 1996
Common Name(s):
English Mahnert's Ridged Frog, Highland Ridged Frog
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:

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Jean-Luc Perret, Robert Drewes, Stefan Lötters
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Listed as Least Concern since, although its Extent of Occurrence is probably less than 20,000 km2, it is likely to be adaptable with a presumed large population, and it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Geographic Range [top]

Range Description: This species is known only the mountains of Kenya on both sides of the Rift Valley, north of Nairobi. It is known from Mount Elgon, Tambach, Njoro, the Aberdare Mountains, Mount Kenya and the Nyambeni Hills. It has been recorded between 1,900 and 2,550m asl.
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population status of this species is unknown.
Current Population Trend: Stable
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It is a species of humid montane grasslands, fields and forest clearings. It breeds in herbaceous marshes and permanent ponds.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Little information is available, but it is probably adaptable and not facing many threats. Local populations might be impacted by overgrazing by livestock, and smallholder agriculture.

Conservation Actions [top]

Conservation Actions: It occurs in the Aberdares and Mount Kenya National Parks.

Citation: Jean-Luc Perret, Robert Drewes, Stefan Lötters. 2004. Ptychadena mahnerti. The IUCN Red List of Threatened Species 2004: e.T58508A11788378. . Downloaded on 13 October 2015.
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