This species is known from several records in West Africa: southern Guinea (Mount Nimba and Ziama Forest); northern Liberia (Mount Nimba); south-western Côte d'Ivoire (Haute Dodo Classified Forest and Taï National Park); and south-western Ghana (Kakoum National Park, Boi Tano Forest Reserve and the Ankasa Conservation Area). Perret (1977) noted its presence in Nigeria, but no localities were given in Perret (1983), so its occurrence in Nigeria requires confirmation.
Habitat and Ecology
It inhabits lowland forest, and is known only from undisturbed primary forest. It presumably breeds in temporary pools.
It is a very rare species, and is rarely encountered.
The major threat to the species is habitat loss and degradation due to agriculture, logging, and human settlement.
It occurs in a number of protected areas, including Taï National Park (Côte d'Ivoire), Mount Nimba World Heritage Site (Guinea and Liberia), Kakoum National Park (Ghana), Boi Tano Forest Reserve (Ghana) and the Ankasa Conservation Area (ACA), a twin wildlife protected area comprising Nini-Suhien National Park (166km²) to the north and the Ankasa Forest Reserve (343km²) to the south (Ghana).
Mark-Oliver Rödel 2004. Hylarana occidentalis. In: IUCN 2014