It is endemic to southern Brazil and occurs in the Serra do Mar in the states of Santa Catarina, Paraná, and São Paulo.

[2] The male advertisement call consists of individual notes emitted sporadically.

[5] Cycloramphus izecksohniast-flowing streams in primary and old secondary forests at elevations up to 1,000 m (3,300 ft) above sea level.

Recent data from São Paulo are lacking and records from Paraná require confirmation.

It is threatened by habitat loss caused by tourism, dam construction and human settlement.