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The taxonomic status of the strabomantid frog species    Pristimantis   nebulosus    (Henle, 1992), originating from the southern Cordillera Azul in central Peru, is investigated based on examination of the holotype and its comparison with freshly collected topotypic material. Following current standards, we provide a redescription of the holotype. It is in a rather poor state and exhibits certain damages and preservation artifacts, conditions that have hampered an allocation of this nominal taxon to any known living population of    Pristimantis    in the past. Our detailed specimen-to-specimen comparison provided morphological evidence for the conspecifity of the holotype and freshly collected topotypes. Molecular phylogenetic analysis, based on the mitochondrial  16S  gene fragment places    P.   nebulosus    in the    P.   conspicillatus    species group, being closely related to    P.   bipunctatus    and an undescribed candidate species from the Cordillera de Carpish. From both,    P.   nebulosus    differs by considerable divergence in the  16S  gene (p-distance 4.1–6.2%). Based on the specimens available, we provide an updated diagnosis for    P.   nebulosus   , compare it to other species in the    P.   conspicillatus    group and describe its advertisement call. In addition, we describe and name the closely related candidate species from the Cordillera de Carpish. It is sister to    P.   bipunctatus    and    P.   nebulosus   , but differs from both mainly by its tuberculate dorsal skin (versus shagreen) and divergence in the  16S  gene (3.3–4.1%). We briefly discuss cryptic species diversity in the    P.   conspicillatus    and    P.   danae    species groups and provide justification for the description of a singleton species.

zoosystematics and evolution

﻿Rediscovery, redescription and identity of    Pristimantis   nebulosus    (Henle, 1992), and description of a new terrestrial-breeding frog from montane rainforests of central Peru (  Anura  ,   Strabomantidae  )

﻿Rediscovery, redescription and identity of Pristimantis nebulosus (Henle, 1992), and description of a new terrestrial-breeding frog from montane rainforests of central Peru ( Anura , Strabomantidae )

Rediscovery, redescription and identity of Pristimantis nebulosus (Henle, 1992), and description of a new terrestrial-breeding frog from montane rainforests of central Peru ( Anura , Strabomantidae )