Oreophryne jeffersoniana 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Microhylidae

Scientific Name: Oreophryne jeffersoniana Dunn, 1928
Common Name(s):
English Komodo Cross Frog
Oreophryne darewskyi Mertens, 1965
Taxonomic Source(s): Frost, D.R. 2017. Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History, New York, USA Available at:

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Djoko Iskandar, Mumpuni
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Listed as Near Threatened because its Extent of Occurrence is probably not much greater than 20,000 km2, and the extent and quality of its habitat are probably declining, thus making the species close to qualifying for Vulnerable.

Geographic Range [top]

Range Description:This species is known only from the islands of Sumbawa, Rinca, Komodo, and the western part of Flores, in the Lesser Sunda Islands, Indonesia, below 600m asl.
Countries occurrence:
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is not an abundant species, but is still regularly recorded.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It lives in bushes and trees in tropical dry forest and shrubland. Breeding is presumably by direct development, with the eggs being laid on the ground.

Threats [top]

Major Threat(s): Very little is known about threats to this species, but plans for introducing livestock to the area would be particularly detrimental.

Conservation Actions [top]

Conservation Actions: It occurs in Komodo National Park and perhaps other protected areas within its range.

Citation: Djoko Iskandar, Mumpuni. 2004. Oreophryne jeffersoniana. The IUCN Red List of Threatened Species 2004: e.T57919A11701566. . Downloaded on 19 June 2018.
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