This species is widely distributed in Japan (Hokkaido, Honshu, Kyushu, Shikoku, Sado Island, Oki Island etc.). It is a lowland species found below 300m asl. It was introduced to Hawaii probably in 1895 or 1896 (Oliver and Shaw, 1953) and now occurs on Oahu, Hawaii, Maui, and Kauai (McKeown, 1996).
Habitat and Ecology
It is widespread in artificial ponds, paddy fields, rivers, streams and wetlands. It breeds in these wetland habitats.
This species is common in suitable habitat.
There are no threats to this species.
It is presumed to occur in a number of protected areas.
Red List Status
Least Concern (LC)
Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
We consider Glandirana emeljanovi to be distinct from G. rugosa following Dubois (1992). The identity of the animals from the Korean Peninsula remains unclear, and until further information becomes available on these populations we restrict G. rugulosa to Japan and consider animals from China and the Korean Peninsula to belong to G. emelijanovi.
Masafumi Matsui 2004. Glandirana rugosa. The IUCN Red List of Threatened Species 2004: e.T58706A11826382. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T58706A11826382.en .Downloaded on 20 January 2019