This species ranges from southeastern Venezuela and the Guianas, through the Amazon Basin of Brazil to northern Bolivia, and east the Brazilian States of Ceará and Maranhao. Records from the State of Alagoas in northeastern Brazil require confirmation. A dot-map of distribution in French Guiana is presented in Lescure and Marty (2001). It has been recorded from sea level up to 200m, probably higher.
Habitat and Ecology
It is usually found around temporary waterbodies in tropical rainforest and rainforest edge. It is also present in more open areas such as Cerrado moist savannah and coastal savannahs (for example in the Guianas), as well as surviving to some extent in anthropogenic habitats, such as pastureland, secondary growth and rural gardens. Males of this nocturnal frog call from herbaceous vegetation 40-50cm above the water. The eggs and tadpoles can be found in the water.
It is locally abundant in Bolivia, Brazil, and the Guianas, but is rare in Venezuela.
Overall, this species is not threatened, but habitat loss and fires probably impact local populations.
A number of protected areas are present within its range. For example, some populations occur within Canaima National Park, in Bolívar state, southeastern Venezuela.
Marty and Lescure (2001) placed Scinax cynocephala in the synonymy of Scinax nebulosus. It is probably a complex of more than one species.
Enrique La Marca, Robert Reynolds, Claudia Azevedo-Ramos 2004. Scinax nebulosus. In: IUCN 2014