About Rana huanrenensis Fei, Ye & Huang, 1990
The Huanren frog, scientifically named Rana huanrenensis Fei, Ye & Huang, 1990, is a species of true frog native to East Asia. It was originally thought to be endemic only to Huanren County, Liaoning, China, but it was later also discovered in South Korea; it is additionally presumed to occur in North Korea. This species is closely related to Dybowski's frog, Rana dybowskii, and all specimens collected before 1991 were incorrectly identified as Dybowski's frog. A key distinguishing feature of the Huanren frog is its lack of a vocal sac. Huanren frogs live in and around rivers and streams located in hilly terrain. The species' type locality in Huanren sits 520 meters (1,710 feet) above sea level, and all specimens found in Korea have only been recorded at altitudes over 500 meters (1,600 feet). In South Korea, specimens have been collected from the provinces of Gangwon-do, Gyeongsangbuk-do, and eastern Gyeonggi-do. This species lays small, clustered egg clutches that are deposited on submerged rocks in the streams it prefers.
