Lehr, E., S. Lyu & A. Catenazzi

In Issues 2021

A new, critically endangered species of Pristimantis (Amphibia: Anura: Strabomantidae) from a mining area in the Cordillera Occidental of northern Peru (Región Cajamarca). pp. 15-26.

Abstract. We describe a new species of Pristimantis from high Andean grasslands (jalca) at 3600 m above sea level in northern Peru (Región Cajamarca) based on morphological and molecular characters. The new species is known from four males and five females, which were found sheltering in the rosettes of Puya fastuosa (Bromeliaceae). The phylogenetic analysis of a fragment of the mitochondrial 16S rRNA gene suggests that the new species is a sister taxon of Pristimantis simonsii. The new species differs from its congeners by having a black dorsum speckled with white flecks and a dark brown groin with white spots. Furthermore, adult males have a snout–vent length of 23.6–27.2 mm (n = 4), and adult females of 25.6–32.8 mm (n = 5). Intensive mining activities apparently have extirpated the new species at its type locality and it is therefore considered critically endangered. We discuss the impact of mining on biodiversity and biological surveys in Peru.

Key words. Extirpation, gold mining, Hualgayoc, jalca, morphology, phylogeny, systematics, Pristimantis astralos new species, Peru.

Resumen. Describimos una nueva especie de Pristimantis de pastizales altoandinos (jalca) a 3600 m s.n.m. en el norte de Perú (Región Cajamarca) en base a caracteres morfológicos y moleculares. La nueva especie se conoce de cuatro machos y cinco hembras que encontramos escondidos en rosetas de Puya fastuosa (Bromeliaceae). El análisis filogenético de un fragmento del gen mitocondrial 16S rRNA sugiere que la nueva especie es el taxón hermano de Pristimantis simonsii. La nueva especie se distingue de sus congéneres por tener un dorso negro con manchas blancas rociadas y una ingle de color marrón oscuro con manchas blancas. Además, los machos adultos tienen una longitud hocico-cloaca de 23.6–27.2 mm (n = 4), y las hembras adultas de 25.6–32.8 mm (n = 5). Debido a las intensas actividades mineras, la nueva especie ha sido extirpada en su localidad tipo. Discutimos el impacto de la minería sobre la biodiversidad y los estudios biológicos en Perú.

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