Ueno's brown frog is a brown frog of the Korean Peninsula and Japan's Tsushima Island. Until 2014 it was considered the same species as Dybowski's frog (Rana dybowskii) of the Russian Far East, but genetic and body-shape studies showed it is a separate species. It doesn't occur in the United States.
Appearance
- Appearance
- Brown, with striped legs and a dark patch over the eardrum. Some have black spots on the back. The belly is white, turning yellowish toward the rear. Males are about 2–2.4 in (5–6.2 cm) long and females about 2.4–3 in (6–7.6 cm), and the hind legs are longer than in Dybowski's frog.
Look-alikes
Huanren frogRana huanrensis
Huanren frog males have no vocal sacs, and the species lays small, firm, grape-like egg clusters on rocks in flowing mountain streams instead of in paddies.
Why they get mixed upBoth are brown frogs of Korean mountains with a dark patch behind the eye.
Where it lives
- Typical habitats
- forests
- mountain valleys
- rice paddies
- Range
- The Korean Peninsula and nearby islands such as Jeju, plus Tsushima Island, Japan. It very likely lives in North Korea too, but records there are incomplete. It is not found in the United States.
Life cycle
- Breeding season
- In South Korea it breeds very early, mostly from late February to late March, laying egg masses in rice paddies and other still water.
Conservation
- IUCN Red List
- LCLeast ConcernLow risk of extinction
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