This species is known only from the type locality, São João da Graciosa, in the Serra do Mar in the state of Paraná, Brazil, from 50-150m asl.
Habitat and Ecology
This species occurs in fast-flowing rocky streams, in which it reproduces, in lowland forest.
Its population status is unknown. It has not been collected since the original collection in the late 1970s, despite survey efforts since 1986.
It is possibly threatened by tourism.
It occurs in Parque Estadual Serra da Graciosa. Given the declines of high-altitude stream-breeding species in other parts of the wet tropics, surveys are urgently needed to relocate this species and to assess its status, especially in view of the lack of recent records. Some other Cycloramphus species have declined for unexplained reasons, and so it is an urgent priority to rediscover populations of this species.
Red List Status
Data Deficient (DD)
Listed as Data Deficient in view of the absence of recent information on its extent of occurrence, status and ecological requirements.
Ronald Heyer, Débora Silvano 2004. Cycloramphus mirandaribeiroi. The IUCN Red List of Threatened Species 2004: e.T56376A11455638. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56376A11455638.en .Downloaded on 21 January 2019