This species is known only from the non-specific type locality in Guyana of "valley of the Demerara River, British Guiana" (Ruthven 1919). The exact location is not known and hence no distribution map can be drawn for this assessment.
Habitat and Ecology
The region of the type locality is lowland tropical rainforest. There is no information regarding this species' breeding habits, although it presumably breeds by larval development in water.
There is no information on the population status of this species, which is known from only one specimen.
The major threats it faces are unknown. However, the region of the type locality is within an undisturbed, isolated region of forest.
More taxonomic research is desirable as this might prove to be a juvenile of another species.
This species is considered incertae sedis, and is presently left in the genus Hyla pending resolution (Faivovich et al. 2005).
Robert Reynolds, Marinus Hoogmoed, Ross MacCulloch, Philippe Gaucher 2004. Osteocephalus helenae. In: IUCN 2014