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Pseudophilautus hypomelas : ウィキペディア英語版 | Pseudophilautus hypomelas
''Pseudophilautus hypomelas'' is a species of frog in the family Rhacophoridae endemic to Sri Lanka. It is sometimes referred to as the webless shrub frog.〔 In 2004 it was declared extinct by the International Union for Conservation of Nature when, despite extensive field efforts, no specimen had been seen in the wild after the species was described by Albert Günther in 1876.〔 However, this frog was rediscovered in 2010 in the Peak Wilderness, a highly biodiverse area in the Central Highlands of Sri Lanka. Thus, this species had been "lost" for more than 130 years. ==History==
The species was described by Albert Günther, a German-born British zoologist, in 1876 based on a collection of 14 syntype specimens by colonel Richard Henry Beddome and W. Ferguson. The latter collection can be pinpointed to the present-day Nuwara Eliya District, whereas the exact location of Beddome's specimens is unknown.〔 Despite extensive field studies, there was no later record of this species, and it was classified as "Extinct" by IUCN in that 2004.〔 However, in April 2010, during field surveys of amphibians in the Peak Wilderness Sanctuary, researchers encountered about 40 frogs that resembled ''Pseudophilautus hypomelas''.〔〔 Initially thought to represent a new species, a careful study of these specimens and Günther's syntypes confirmed that these frogs actually were ''Pseudophilautus hypomelas'', and the species was redescribed based on fresh specimens by a group of Sri Lankan scientists in 2013.〔
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