Sri Lanka: An Amphibian Hot Spot

Dramatic population declines have affected frogs worldwide (1), and, although new species continue to be described (2), the discovery of large new species radiations is rare. Here, we report the discovery of an endemic radiation of 100 species of Old World tree frogs (Rhacoph-orinae) from Sri Lanka, an island from which only 18 rhacophorine species were known previously (3). An ex-tensive survey, primar-ily in the island’s re-maining 750 km2 of rain forest, revealed upwards of 140 anuran