A new small golden frog of the genus Pristimantis (Anura: Craugastoridae) from an Andean cloud forest of Colombia

in Amphibia-Reptilia
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A new species of Pristimantis is described from an Andean cloud forest at 2650 m in the Cordillera Oriental of Colombia. Pristimantis dorado sp. nov. is similar to and could be closely related to P. acutirostris, but can be readily distinguished from this latter species by the absence of a tympanic annulus, vocal slits, vocal sac and reticulations on concealed surfaces, and by having a metallic gold iris with a brown horizontal streak. The phylogenetic position of the new species is recovered and we provide its advertisement call, which this species manages to emit despite lacking a vocal sac and vocal slits. This discovery reminds us that despite the extensive research on the alpha-taxonomy of Pristimantis in Colombia, fieldwork in high montane forests continues to yield previously unknown species.

A new small golden frog of the genus Pristimantis (Anura: Craugastoridae) from an Andean cloud forest of Colombia

in Amphibia-Reptilia



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    Pristimantis dorado sp. nov. in life (MHUA-A 7311, paratype, female, SVL 19.2 mm). (A, D) lateral view; (B) ventral view; (C) frontal view. Photographs: S. Castroviejo-Fisher. This figure is published in colour in the online version.

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    Pristimantis dorado sp. nov. (MHUA-A 7313, holotype). (A) Head in lateral view; (B) head in dorsal view; (C) left hand in ventral view; (D) left foot in ventral view. Scale bar = 5 mm. Note the nuptial pad on Finger I. Drawings: MRC.

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    Dorsal and ventral view of the holotype of Pristimantis dorado sp. nov. (MHUA-A 7313, SVL 17.9 mm). This figure is published in colour in the online version.

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    Map showing the known localities of Pristimantis dorado sp. nov.: Municipio de San Juanito, Departamento de Meta, type locality (white star), and Farallones de Gachalá, Municipio de Medina, Departamento de Cundinamarca (white circle).

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    Advertisement call of Pristimantis dorado sp. nov. (A) Oscillogram showing the amplitude and call duration; (B) spectrogram showing the frequency range of calls; (C) power spectrum showing the peak frequency of the call.

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    Maximum likelihood (ML) phylogenetic inference based on 474 aligned base pairs of the 16S gene, including 127 parsimony-informative sites, for a Ln-likelihood value of −2866.67. Numbers on branches represent support values for likelihood bootstrap percentages above the branch and maximum parsimony bootstrap percentages below the branch. Bootstrap values below 50% are not shown. Scale bar shows ML branch length estimated under a General Time Reversible model of substitution with four gamma-distributed rate categories described by an α=0.21305 shape parameter.

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