This species has been reported from south of the Orinoco river in Amazonas State, Venezuela; Mato Grosso state, Brazil; French Guiana; Guyana; Suriname and the extreme north of Bolivia. It was previously reported from many places in Venezuela. La Marca (1996) restricted its occurrence to south of the Orinoco river. Furthermore, its distribution was known from Venezuela, French Guiana, Guyana, Suriname, Brazil and Perú, but Morales (1994) restricted its distribution to the refuges of Rondonia and Tapajós, in Brazil. Reports from the Guianas probably refer to another species, but are mapped here.
Habitat and Ecology
It occurs at the margins of lakes and pools of stagnant water in tropical rainforest and in Bolivia it is found in seasonally flooded forest. Its breeding habits are unknown, but the larvae are likely to develop in water.
It is common at one site in Bolivia. Its status elsewhere is unknown.
Habitat loss due to agricultural activities is a threat to this species.
Some populations lie within protected areas, such as the Duida-Marahuaca National Park in Venezuela. The creation of new protected areas and research actions on this species are needed. The Bolivian site is protected in Noel Kempff Mercado National Park.
This is probably a complex of species. Frogs known as Allobates brunneus from northern Orinoco in Venezuela have recently been separated as A. pittieri (La Marca et al., 2004).
Débora Silvano, Enrique La Marca, Steffen Reichle 2004. Allobates brunneus. In: IUCN 2014