This species is widely distributed; it is present in the Orinoco basin of Venezuela (in the states of Amazonas, Bolívar, Delta Amacuro, Monagas and Sucre) and the Amazon basin of Colombia, Venezuela, Peru, Brazil and Ecuador, it is also found on Trinidad Island (in Trinidad and Tobago) throughout the Guianas and in the seasonally flooded lowlands of Maranhão, Brazil. It has an altitudinal range of sea level to 300m asl.
Habitat and Ecology
This species is found in flooded plains, floating meadows, ponds and large lagoons with floating vegetation (especially Eichhornia sp.) in forest clearings, at forest edges and in savannah, where males call from herbaceous vegetation just above the surface of the water. It has also been found under the leaf litter in tropical rainforest, and in seasonally flooded agricultural land. At night, this semi aquatic frog congregates at permanent or semi-permanent ponds in open areas. The males call from floating vegetation or emergent grasses (Rodríguez and Duellman, 1994). This species breeds in the wetlands with which it is associated. It has been recorded from flooded roadside ditches (Trinidad).
It is common through most of range.
Fire and clear-cutting of forest might be localized threats to this species. It might also be threatened in some areas by water pollution.
The range of this species includes several protected areas. Some Venezuelan populations occur in protected areas. In Ecuador, its geographic range overlaps with Reserva de Producción Faunística Cuyabeno, Reserva Biológica Limoncocha, and Parque Nacional Yasuní.
Enrique La Marca, Claudia Azevedo-Ramos, Luis A. Coloma, Santiago Ron, Jerry Hardy 2010. Sphaenorhynchus lacteus. In: IUCN 2014