The genus Onychodactylus or clawed salamanders is composed of two species, both endemic to East Asia

East Asia

East Asia or Eastern Asia is a subregion of Asia that can be defined in either geographical or cultural terms...

. The species Onychodactylus fischeri

Onychodactylus fischeri

Onychodactylus fischeri is a lungless salamander found on the Korean peninsula, as well as in the Russian Far East and adjacent regions of China. It is also known as Fischer's Clawed Salamander and the Long-tailed Clawed Salamander...

is found on the Korean peninsula

Korean Peninsula

The Korean Peninsula is a peninsula in East Asia. It extends southwards for about 684 miles from continental Asia into the Pacific Ocean and is surrounded by the Sea of Japan to the south, and the Yellow Sea to the west, the Korea Strait connecting the first two bodies of water.Until the end of...

, as well as in the Russian Far East

Russian Far East

Russian Far East is a term that refers to the Russian part of the Far East, i.e., extreme east parts of Russia, between Lake Baikal in Eastern Siberia and the Pacific Ocean...

 and adjacent regions of China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

. The species Onychodactylus japonicus is found in Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

, on the islands of Shikoku

Shikoku

is the smallest and least populous of the four main islands of Japan, located south of Honshū and east of the island of Kyūshū. Its ancient names include Iyo-no-futana-shima , Iyo-shima , and Futana-shima...

 and Honshū

Honshu

is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

. Both species are lungless with moderately developed parotoid gland

Parotoid gland

The parotoid gland is an external skin gland on the back, neck, and shoulder of toads and some frogs and salamanders. It secretes a milky alkaloid substance to deter predators...

s. They inhabit moist forested mountains near small rivers, streams, and lakes. Adults of both species can reach a length of 19 cm.

Species

Binomial Name and Author	Common Name
Onychodactylus fischeri Onychodactylus fischeri Onychodactylus fischeri is a lungless salamander found on the Korean peninsula, as well as in the Russian Far East and adjacent regions of China. It is also known as Fischer's Clawed Salamander and the Long-tailed Clawed Salamander...	Fischer's Clawed Salamander
Onychodactylus japonicus	Japanese Clawed Salamander

External links

. 2008. Amphibian Species of the World: an Online Reference. Version 5.2 (15 July, 2008). Onychodactylus. Electronic Database accessible at http://research.amnh.org/herpetology/amphibia/index.php. American Museum of Natural History, New York, USA. (Accessed: July 28, 2008). [web application]. 2010. Berkeley, California: Onychodactylus. AmphibiaWeb, available at http://amphibiaweb.org/. (Accessed: November 20, 2010).