The species is known from Tsitolaka forest near Ambohitsara village and near Ankazorokana between 142-300 m asl eastern Madagascar (Wollenberg et al. 2012). It is unlikely that its distribution extends much further to the south as closely related species occur there; however, the limits of its range to the north are unknown. The extent of occurrence (EOO) of its current known range is 3,192 km2.
Habitat and Ecology
The species inhabits dense fern shrubs, pristine forest (type locality) and degraded lowland tropical forest. It is uncertain how this species is affected by habitat degradation (Wollenberg et al. 2012), but it seems to present a degree of resilience. Individuals were found calling during the day in shrubs, perched less than 10 cm high or on the ground (Wollenberg et al. 2012).
It is known from six specimens collected in 2007 at Tsitolaka, six specimens collected near Ankazorokana in 2009 and is considered locally common (Wollenberg et al. 2012). Ongoing decline in the quality and extent of its habitat is thought to be causing the population to decrease.
The area is generally under heavy human pressure because of agricultural activities (Wollenberg et al. 2012). However, because the species inhabits dense fern shrubs and secondary vegetation, it is thought to be somewhat resilient to habitat disturbance (F. Glaw pers. comm. November 2014).
Species in this genus have tested positive for Batrachochytrium dendrobatidis (Bd), however currently there have been no negative effects observed within amphibian populations in Madagascar suggesting the Bd strain has a low virulence level (Bletz et al. 2015).
The species is not known to occur in any protected areas.
Protection of remaining coastal forest is urgently required in eastern Madagascar.
Research is required into the species' population status, life history and ecology and threats. Further research is also essential to fully understand the distribution, origin, type and virulence of Bd lineages found in Madagascar (Bletz et al. 2015).
Red List Status
Listed as Endangered becaue it has an extent of occurrence (EOO) of 3,192 km2, occurs in fewer than five threat-defined locations, and there is ongoing decline in the quality and extent of forest habitats in eastern Madagascar.
In the Gephyromantis decaryi complex and formerly referred to as Gephryomantis sp. 8 according to the original publication (Frost 2013).
IUCN SSC Amphibian Specialist Group 2016. Gephyromantis hintelmannae. The IUCN Red List of Threatened Species 2016: e.T49563132A49563195. http://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T49563132A49563195.en