This species is known only from the Chung Chry Stream, at 500m asl in the Seima Biodiversity Conservation Area, O'Rang District, Mondolkiri Province, eastern Cambodia (Stuart et al., 2005). It presumably occurs more widely, perhaps including in neighbouring Viet Nam; indeed, records of Ophryophryne gerti from Viet Nam could refer to this species (Nguyen Quang Truong, pers. comm.).
Habitat and Ecology
Both specimens were found near a swift-flowing stream in hilly evergreen forest (Stuart et al., 2005). It presumably breeds by larval development in streams. It has not been found in degraded habitats.
There is no information on its abundance. It is known from only two specimens (Stuart et al., 2005), but this apparent rarity might be an artifact of limited sampling.
There is no information on threats to this species. The only records so far are from a protected area.
It occurs in the Seima Biodiversity Conservation Area (Stuart et al., 2006). Surveys are needed to determine its geographic distribution, abundance, ecological requirements, threats and conservation needs.
Bryan Stuart, Nguyen Quang Truong 2008. Ophryophryne synoria. In: IUCN 2014