Systematics of , a new subgenus of (Anura, Strabomantidae) with extraordinary cryptic diversity and eleven new species.

is the most diverse genus of tetrapods comprising 532 described species. It contains a large number of morphologically cryptic species that are being discovered with the assistance of genetic evidence. We use molecular, morphological, bioacoustic, and environmental data to assess the phylogenetic relationships and determine the species within an Andean clade of , which is distributed from central Ecuador to northern Peru. We assign to this clade the name and propose it as a subgenus. Our results show that is composed of two large clades which we name as the species group and the species group. is composed of 28 species of which 12 have been described and 16 are new. We describe 11 of these undescribed species. The most effective characters to discriminate among species are DNA sequences, qualitative morphology, and advertisement calls. Morphometric and environmental characters are not very useful to define species limits. We clarify the identity of and show that populations from southern Ecuador traditionally ascribed to are a new species, We also show that is a junior synonym of . The current diversity and geographic distribution of are consistent with a model of allopatric speciation. All species have a restricted distribution range (less than 4330 km) and are assigned to the Red List categories Data Deficient or threatened with extinction. We provide new reasons to increase conservation efforts for these species and their habitat. Taking our results into account, species richness in Ecuador increases from 211 to 221 species, and the number of species endemic to Ecuador from 119 to 129.