This species is known from central Viet Nam (Bourret, 1941; Inger et al., 1999; R. Bain pers. comm.), the Annamite mountains of central Lao People's Democratic Republic (Stuart, 1999), and northern and western Thailand (Yang 1991, in Inger et al., 1999). Records from northern Vietnam and from Yunnan and Guangxi on China refer to Amolops mengyangensis. Known localities are between 600 and 1,500m asl.
Habitat and Ecology
It has been observed on rock faces, boulders and streamside vegetation in the spray zones of waterfalls, in evergreen forest (Stuart, 1999), as well as in hill streams. It breeds in clear, flowing streams. It has not been found outside forest.
It is apparently not uncommon locally, as reasonable series have been collected from Tam Dao (Bourret, 1941; Inger et al., 1999) in Viet Nam.
The specific threats to this species are not certain, but it is believed to be affected by forest loss arising due to smallholder farming, harvesting of wood and expanding human settlements.
The species' range includes numerous protected areas. Taxonomic research is needed to resolve what might be a species complex.
This species was formerly included in the genus Huia, but Ngo et al. (2006) suggested that might belong in the genus Odorrana, an arragement that we follow here. Liu and Hu (1961) reported Odorrana nasica from Mengyang, in Yunnan Province, China, and Fei et al. (1999) also reported it from Guangxi Province, China. When Yang (1991) reviewed the genus Amolops, he considered the Mengyang specimens to be different from the true Amolops nasicus (as Odorrana nasica) from southeast Asia. Subsequently, Amolops mengyangensis Wu and Tian, 1995 was described, and we treat all records of O. nasica from China as belonging to A. mengyangensis, following Ohler (2007).
Peter Paul van Dijk, Raoul Bain, Wu Guanfu, Lu Shunqing, Yang Datong 2004. Odorrana nasica. In: IUCN 2014