A New Species of Oreolalax Myers & Leviton, 1962 (Anura, Megophryidae) from Northeast Yunnan, China

Based on molecular phylogenetic analyses and morphological features, a new species of the genus Oreolalax Myers & Leviton, 1962 (Anura: Megophryidae) is described from Yunnan Province, China. Molecular phylogenetic analyses of mitochondrial 16S rRNA and COI gene sequences indicate that the new species forms an independent clade closely related to Oreolalax. omeimontis. The genetic distance between these two taxa was 11.25% based on 16S gene, and 17.61% based on COI. The new species can be distinguished from all other congeneric species by a combination of the following characteristics: (1) moderate body size (SVL of male 49.5–53.0 mm, n=2; female 46.6 mm, n=1); (2) tympanums hidden or slightly visible; (3) absence of vocal sac; (4) rudimentary interdigital toe webbing; (5) narrow lateral fringes; (6) tibiotarsal articulation reaching between the eye and nostril when leg stretched; (7) heel only contact when limbs held at right angles to body; (8) femoral glands large and distinct; (9) abdomen with distinct cloudy spots; (10) male dorsum covered in large and small tubercles, and (11) a dark triangular marking between the eyes.