摘要 : We describe a new species of Anodonthyla from the Ranomafana region in southeastern Madagascar. Anodonthyla moramora, spec. nov. is the smallest Anodonthyla known so far, with adult snout-vent lengths of 15-16.5 mm in males and fe... 展开 We describe a new species of Anodonthyla from the Ranomafana region in southeastern Madagascar. Anodonthyla moramora, spec. nov. is the smallest Anodonthyla known so far, with adult snout-vent lengths of 15-16.5 mm in males and females. The new species is morphologically closest to A. boulengeri Mueller which occurs syntopically at Ranomafana; however, among other characters A. moramora is distinguished by its smaller size, slower note repetition rate in advertisement calls and a strong genetic differentiation as indicated by a pairwise uncorrected sequence divergence of 11-12% in a fragment of the mitochondrial 12S rRNA gene. For comparative reasons we also provide measurements of the holotypes of Anodonthyla boulengeri, A. nigrigularis Glaw & Vences and A. rouxae Guibe, and designate a lectotype for Anodonthyla montana Angel. The discovery of the new species described herein, and of a second genetically distinct form from Ranomafana, provide further support for a center of diversity and endemism of Anodonthyla in the southeast of Madagascar. 收起