This species is known only from the type locality, Alto Itatiaia, very close to the borders of Minas Gerais and Rio de Janeiro States, in Brazil, at around 2,200m asl.
Habitat and Ecology
It presumably lives in leaf-litter, like other species in the genus, and breeds by larval development.
It is currently known from only two specimens.
The major threats are unknown, although the type locality is in a protected area, affording the species some indirect level of protection.
The one known locality for this species is within Parque Nacional do Itatiaia. 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.
Vanessa Verdade, Ronald Heyer 2004. Cycloramphus carvalhoi. In: IUCN 2014