This species occurs in the mountainous parts of southern and southeastern Brazil (from southern Minas Gerais south to northern Rio Grande do Sul), west to east-central Misiones Province, Argentina. Its altitudinal range is 400-1,700m asl.
Habitat and Ecology
This is an arboreal frog found in the canopy of primary forest. It is an explosive breeder, spawning in permanent still waterbodies in the forest. Probably not tolerant of much habitat disturbance.
This species is not well known and is probably a rare species, although some very large populations have been found breeding in the northern part of its range. The southern population (which is probably a different species) seems to be much rarer. It is probably easily overlooked when not breeding.
The major threats are probably related to habitat loss due to agriculture, livestock grazing, wood plantations, logging and human settlement.
It is not known from any protected areas in Brazil. Occurs in a small private reserve in Argentina.
Two species are included under this name (A. Kwet pers. comm.). This species was previously within the genus Phrynohyas which was recently synonymized with Trachycephalus (Faivovich, et al., 2005).
Magno Vicente Segalla, Axel Kwet, Diego Baldo, Julian Faivovich 2004. Trachycephalus imitatrix. In: IUCN 2014