This species is only known from the type locality in Marojejy National Park at 1,326 m asl in the northeast of Madagascar (Glaw and Vences 2011). However, its elevational range is unknown - it may occur both higher and lower than currently recorded - and the limits of its range are also unknown, so it has tentatively been mapped to the boundaries of the Park and its extent of occurrence (EOO) is 780 km2.
Habitat and Ecology
Known only from the primary forests around Camp Simpona on the upper slopes of the Marojejy massif. Its breeding strategy is unconfirmed, but current knowledge on Cophylinae frogs indicates they have "nidicolous, endotrophic (non-feeding) tadpoles, lay their eggs in small burrows, leaf axils, and tree holes, and exhibit some degree of parental care (nest guarding)" (Scherz et al. 2014).
The population trend is decreasing due to ongoing habitat loss within its currently mapped range.
Intensive illegal wood extraction of rosewood species within Marojejy National Park that followed the 2009 political crisis of Madagascar caused concerns for the survival of rainforest–restricted species, such as this one. However, while illegal rosewood logging has probably ceased, wood extraction currently taking place in the Park seems to occur at lower elevations and is not thought to have reached elevations where this species has been recorded; along the boundaries of Marojejy deforestation is taking place to clear land for agriculture (F. Glaw pers. comm. November 2015).
This species occurs in Marojejy National Park.
Improved protection of forests in the region is required.
Further research is required to clarify the species' distribution, population size and trends.
Red List Status
Listed as Endangered because the extent of occurrence is 780 km2, it is known from fewer than five threat-defined locations, and there is continuing decline in the extent and quality of its habitat within Marojejy National Park.
This species has been split from the broader concept of Rhombophryne serratopalpebrosa (Scherz et al. 2014).
IUCN SSC Amphibian Specialist Group 2016. Rhombophryne vaventy. The IUCN Red List of Threatened Species 2016: e.T79130249A84185495. http://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T79130249A84185495.en .Downloaded on 15 November 2018