This species is known only from the non-specific type locality of "in the forest at Mazaruni, British Guiana" (Goin 1966). The exact locality is unknown, and so no map has been drawn for this assessment.
Habitat and Ecology
It presumably inhabits lowland forest and breeds by larval development in water.
There is nothing known about the population status of this species, which is known only from one specimen.
The major threats to this species are unknown. However, the type locality is within an undisturbed isolated region of forest.
More taxonomic research is desirable as the type specimen might prove to be a juvenile of another species.
This species was previously within the genus Hyla but has recently been moved to the resurrected genus Dendropsophus (Faivovich et al. 2005).
Robert Reynolds, Marinus Hoogmoed, Ross MacCulloch, Philippe Gaucher 2004. Dendropsophus grandisonae. In: IUCN 2014