This species is known only from two localities nearly 1,000km apart from each other: Río Cauca, near the border of Antioquia and Bolivar Departments in north-western Colombia; and extreme north-western Esmeraldas Province, in Ecuador, at 500m. It is likely to occur between these two localities.
Habitat and Ecology
It is an inhabitant of the canopy of rainforest, and probably breeds in tree holes.
It appears to be an extremely rare species, though this might be an artefact of it being a canopy species that is very hard to detect.
The major threats are likely to be deforestation for agricultural development, planting of illegal crops, logging, and human settlement, and pollution resulting from the spraying of illegal crops. Both localities from which is has been recorded are seriously threatened, with the only known site in Colombia particularly threatened by the expansion of livestock farming.
It is not known from any protected areas, and habitat protection is urgently required. Further survey work is necessary to determine the current population status of this species and the limits of its range.
This species was previously included in the genus Hyla but has recently been moved to the new genus Ecnomiohyla (Faivovich et al. 2005). We follow Duellman (2001) and Savage (2002) in considering this as a species distinct from Ecnomiohyla miliaria.
Karl-Heinz Jungfer, Juan Manuel Renjifo 2004. Ecnomiohyla phantasmagoria. In: IUCN 2014