The small rough-coated tree frog is at home in the canopies of mountainous forests in Vietnam's Quang Binh Province. Its distinct digits lack the finger webbing seen in many other tree frog species.
Philautus quyeti is one of over a thousand new species found in Southeast Asia's Greater Mekong region in the past decade, and one of more than 160 found in 2008 alone, WWF announced in September 2009.
Other species no doubt await discovery in the biologically rich region, WWF scientists say. But conservationists worry about pressures from global warming and from development, which has left as little as 5 percent of the Mekong's original habitat intact.