Description and Phylogenetic Position of a New (Singleton) Species ofOreobatesJiméNez De La Espada, 1872 (Anura: Craugastoridae) from the Yungas of Cochabamba, Bolivia

Abstract

ABSTRACT We report the discovery of a new singleton species of Oreobates Jimenez de la Espada, 1872, from the Yungas forest of the Amazonian versant of the Andes in Bolivia, infer its phylogenetic position, revisit the phylogenetic relationships of Oreobates, and discuss the conditions that justify description of the species with a single specimen. The new species, Oreobates yanucu, differs from all other Oreobates in a combination of external conditions: granular dorsal skin with scattered warts, finger I longer than finger II, finger tips of fingers III and IV distinctly enlarged and truncate in outline, tips of toes II to V with ungual flaps, head longer than wide, basal webbing between toes I and II and toes II and III, foot length/snout—vent length = 50%, lack of orange, red, or scarlet flecks and blotches in life. Although similar in appearance to O. amarakaeri Padial et al., 2012, O. choristolemma (Harvey and Sheehy, 2005), O. granulosus (Boulenger, 1902), O. sanctaecrucis (Harvey and Keck, 1995), ...