Cycloramphus organensis
family: Cycloramphidae
Species Description: Weber LN, Verdade VK, Salles R. de O.L., Fouquet A, de Carvalho-e-Silva SP 2011 A new species of Cycloramphus Tschudi (Anura: Cycloramphidae) from the Parque Nacional da Serra dos argaos, southeastern Brazil. Zootaxa 2737: 19-33.
Conservation Status (definitions)
IUCN (Red List) Status Data Deficient (DD)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Brazil


View distribution map using BerkeleyMapper.


From the IUCN Red List Species Account:


Range Description

This species is known from a single locality between 2,000 and 2,100 m asl within the Parque Nacional da Serra dos Órgãos (PARNASO), Municipality of Petrópolis, Rio de Janeiro, southeastern Brazil (Weber et al. 2011, L.N. Weber pers. comm. August 2013). It is unlikely to occur outside of these highlands; however, more data are required to confirm this (L.N. Weber pers. comm. August 2013). Taking its range as a proxy for extent of occurrence (EOO), this is estimated to be 13.94 km2 when considering suitable highland areas above 1,900 m asl within PARNASO. Although its area of occupancy (AOO) is not calculated independently, it will not be more than the EOO, thus we currently consider it to be 13.94 km2.

Habitat and Ecology

It is associated with open areas of the highlands within the Parque Nacional da Serra dos Órgãos, with strong suggestions that is is restricted to the open areas above the tree line. Preferred microhabitats consist of terrestrial refugia such as under rocks, and is also associated with lichens or other means of vegetation. It has not, however, been recorded in exposed habitats. Reproduction is suggested to occur terrestrially (Weber et al. 2011) in the wet season, with a single female specimen found to contain 21 developing eggs (L.N. Weber pers. comm. August 2013). It is inferred from congeners that the larvae live on rocks out of water in the splash zones of waterfalls.


No population status information is currently available for this species.

Population Trend


Major Threats

No species-specific threats are known; however, the open highlands are regularly exposed to orographic rain which can be laden with pollutants from the surrounding lowland areas (Verdade et al. 2011). Severe declines of many Brazilian highland amphibians have been recorded, however the causes remain uncertain with pollution, severe weather and Batrachochytrium dendrobatidis suggested as possibilities (Carnaval et al. 2006, Verdade et al. 2011, L.N. Weber pers. comm. August 2013). At this time, however, there is no information as to whether this species is experiencing declines associated to any of these factors.

Conservation Actions

It occurs in a moderate and well managed conservation area of 200 km(Parque Nacional da Serra dos Órgãos, Weber et al. 2011, L.N. Weber pers. comm. August 2013). However, there appear to be no species-specific conservation measures in place. More information is needed on this species' distribution, population, ecology and threats.

Red List Status

Data Deficient (DD)


Listed as Data Deficient since it has only recently been described, and there is still very little known about the extent of its distribution, its population status, ecological requirements and threats. 


IUCN SSC Amphibian Specialist Group 2014. Cycloramphus organensis. The IUCN Red List of Threatened Species 2014: e.T45727665A45727668. .Downloaded on 19 November 2018


IUCN Terms of Use