This species is found in temperate valleys east of the Andes in Bolivia at 1,000-1,800m asl. It is found in the departments of Cochabamba, La Paz and Santa Cruz (De la Riva et al. 2000; Köhler 2000). The records from Argentina are in error (Lavilla et al. 2002). There is still very little information on its extent of occurrence, and attempts to map its distribution at this stage should be regarded as approximate and preliminary.
Habitat and Ecology
This is an arboreal species from open areas in inter-Andean valleys, montane Tucumano-Bolivian forest and Yungas forest (De la Riva et al. 2000). De la Riva (1993) and De la Riva et al. (1994) observed males calling at sunset from the ground or perching on bushes, brushwoods or rushes surrounding Bermejo Lake. Köhler (2000) states that it can be found next to ponds or water tanks on emergent vegetation. There is no other information on its breeding habits. This species is not thought likely to adapt well to altered habitats.
It is locally common at the three or four known locations.
Its major threats are habitat loss and degradation due to agricultural development, logging, and human settlement.
Parque Nacional Amboró is at the edge of its range. Taxonomic research and monitoring is needed to determine the taxonomic and population status of some of the subpopulations currently assigned to this species.
This species was described as new because its call is distinct from those of Scinax fuscovarius and S. nasius, species with which it shares similar phenotypic characteristics.
Claudia Cortez, Steffen Reichle, Ignacio De la Riva, Jörn Köhler 2004. Scinax castroviejoi. In: IUCN 2014