Abstract
We redescribe the poorly known Platymantis akarithymus and describe two new species of this terrestrial frog genus from the Nakanai Mts. of eastern New Britain Island. All are small inhabitants of the leaf litter. Discovery of the two new species increases the known diversity of the genus on New Britain to 15 species, ten of which we routinely found to occur in syntopy. The two new fossorial species are diminutive and extend the morphological and ecological diversity seen in this assemblage. Several pairs of apparent sibling species are found on New Britain and these are likely the result of geological events that have divided the island into smaller islands in the past. We anticipate that further sibling species will be discovered once the Whiteman Range of western New Britain is properly explored.References
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