This species is known only from the type locality at around 2,000m asl on the northern slopes of the Sierra de Juárez, in the vicinity of Vista Hermosa town, north-central Oaxaca, Mexico.
Habitat and Ecology
This species is restricted to cloud forest, and is highly dependent on humid habitats and in particular, the vegetation along low streams as well as epiphytic plants that serve as a refuge. It is a stream-breeding species.
This has always been a rare species, but it appears to have gone into serious decline, and has not been recorded since 1962. Recent surveys to locate it have been unsuccessful, and it might now be extinct.
This species has disappeared in suitable habitat, probably due to chytridiomycosis. The disappearance or disturbance of the unique cloud forest environment, primarily through selective logging, at Sierra de Juárez, is also a serious threat to the survival of this species as well as many other amphibians, especially those associated with humid habitats.
This species is not known to occur in any protected areas, and urgent protection of the cloud forest areas in Sierra de Juárez is recommended. A survey to determine whether or not this species is still extant in the wild is also required. It is protected by Mexican law under the "Special Protection" category (Pr).
This species was previously included in the genus Hyla but has recently been moved to the new genus Ecnomiohyla (Faivovich et al. 2005).
Georgina Santos-Barrera, Luis Canseco-Márquez 2004. Ecnomiohyla echinata. In: IUCN 2014