A New Species of Polypedates from Sumatra, Indonesia (Amphibia: Anura)

A rhacophorid tree frog from Sumatra that was once identifed as Polypedates otilophus (Boulenger, 1893) is suffciently divergent genetically and morphologically from topotypic specimens from Borneo as to be recognized as a distinct species. It is herein described as P.pseudotilophus sp. nov. The Sumatran frogs can be distinguished easily from the Bornean population by the possession of a much more weakly developed supratympanic bony crest, smoother dorsal skin, and a large, hourglass-shaped dark marking, instead of longitudinal stripes on the dorsum.Key Words: Cryptic species, Polypedates otilophus, Polypedates pseudotilophus sp. nov., Sumatra, taxonomy, Indonesia. Species diversity: an international journal for taxonomy, systematics, speciation, biogeography, and life history research of animals, 2014, 19(1), 1-7.