Browsing by Author "Riva, Ignacio de la."
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item A revision of species diversity in the neotropical genus Oreobates (Anura, Strabomantidae), with the description of three new species from the Amazonian slopes of the Andes. (American Museum novitates, no. 3752)(American Museum of Natural History., 2012-07-20) Padial, Jose M.; Chaparro, Juan C. (Juan Carlos), herpetologist.; Castroviejo-Fisher, Santiago.; Guayasamin, Juan M.; Lehr, Edgar.; Delgado, Amanda J.; Vaira, Marcos.; Teixeira, Mauro.; Aguayo, Rodrigo.; Riva, Ignacio de la.We revisit species diversity within Oreobates (Anura: Strabomantidae) by combining molecular phylogenetic analyses of the 16S rRNA amphibian barcode fragment with the study of the external morphology of living and preserved specimens. Molecular and morphological evidence support the existence of 23 species within Oreobates, and three additional candidate species (Oreobates sp. (Ca JF809995), Oreobates sp. (Ca EU368903), Oreobates cruralis (Ca EU192295)). We describe and name three new species from the Andean humid montane forests of Departamento Cusco, southern Peru: O. amarakaeri new species from Río Nusinuscato and Río Mabe, at elevations ranging from 670 to 1000 m in the Andean foothills; O. machiguenga, new species, from Río Kimbiri (1350 m), a small tributary of the Apurimac River, in the western versant of Cordillera Vilcabamba; and O. gemcare, new species, from the Kosñipata Valley at elevations ranging from 2400 to 2800 m. The three new species are readily distinguished from all other Oreobates by at least one qualitative morphological character. Three species are transferred to Oreobates from three genera of Strabomantidae: Hypodactylus lundbergi, Pristimantis crepitans, and Phrynopus ayacucho (for which the advertisement call, coloration in life, and male characteristics are described for first time). Oreobates simmonsi is transferred to the genus Lynchius. Hylodes verrucosus is considered a junior synonym of Hylodes philippi. In addition, H. philippi is removed from the synonymy of O. quixensis and considered a nomem dubium within Hypodactylus. The inclusion of Phrynopus ayacucho in Oreobates extends the ecological range of the genus to the cold Andean puna. Oreobates is thus distributed from the Amazonian lowlands in southern Colombia to northern Argentina, reaching the Brazilian Atlantic dry forests in eastern Brazil, across an altitudinal range from ca. 100 to 3850 m.Item A taxonomic revision of Proctoporus bolivianus Werner (Squamata, Gymnophthalmidae) with the description of three new species and resurrection of Proctoporus lacertus Stejneger. (American Museum novitates, no. 3786)(American Museum of Natural History., 2013-10-30) Goicoechea, Noemí.; Padial, José M.; Chaparro, Juan Carlos (Herpetologist); Castroviejo-Fisher, Santiago.; Riva, Ignacio de la.The genus Proctoporus comprises seven montane species distributed across the Central Andes of Peru, Bolivia, and northern Argentina. Within this genus, the extensive morphological variation observed in populations traditionally assigned to Proctoporus bolivianus suggested the presence of additional species. Using a combination of morphological character differences and a phylogenetic hypothesis based on mitochondrial (12S, 16S, and ND4) and nuclear (c-mos) DNA sequences, we find P. bolivianus to be composed of six distinct lineages. Among these, we name and describe herein Proctoporus carabaya, P. iridescens, and P. kiziriani and we resurrect the name Proctoporus lacertus. The remaining two lineages are also considered unnamed species and are referred herein as confirmed candidate species (CCS), which we refrain from naming due to lack of appropriate material. The new species named herein are found in the departments of Cusco and Puno, Peru, and are distinguishable from all other species of Proctoporus by unique combinations of morphometric, pholidosis, and color-pattern characteristics. A neotype of P. bolivianus is designated.