This species occurs in coastal region of Pernambuco to Rio Grande do Sul, Brazil. Its altitudinal range is up to 1,000m asl.
Habitat and Ecology
It is a species of open areas, including grassland and pastureland. It is found on vegetation above ponds and other area of standing water. It breeds in temporary and permanent ponds.
It is a common species.
It is a very adaptable species, and is not facing any known threats.
It occurs in many protected areas.
This species was removed from the synonymy of Scinax catharinae, without comment, by Potsch de Carvalho-e-Silva and Peixoto (1991). It was treated as a synonym of Scinax rubra by Duellman and Wiens (1993). Pombal, Haddad and Kasahara (1995), Pombal, Bastos and Haddad (1995), and S. Potsch de Carvalho-e-Silva (pers. comm.) noted that there might be several species covered by the name Scinax alter.
Sergio Potsch de Carvalho-e-Silva, Axel Kwet 2010. Scinax alter. In: IUCN 2014