Abstract
The toad genus Oreolalax is widely distributed in southwest China and northern Vietnam. A new species of the genus is described from Sichuan Province, China. Phylogenetic analyses based on the mitochondrial 12S rRNA and 16S rRNA gene sequences supported the new species as an independent clade clustered into the clade also containing O. nanjiangensis and O. chuanbeiensis. The new species can be distinguished from its congeners by a combination of the following characters: body size moderate (SVL 51.2–64.2 mm in males); head broad; tympanum hidden; interorbital region with dark triangular pattern; belly with marbling; male lacking spines on lip margin; spiny patches on chest small with thick sparse spines in male; nuptial spines thick and sparse; tibio-tarsal articulation reaching beyond nostril when leg stretched forward; toe webbing at base.
Highlights
The toothed toad genus Oreolalax Myers & Leviton, 1962 belongs to Leptobrachiinae Dubois, 1980 of Megophryidae Bonaparte, 1850 (Amphibia, Anura)
All nine specimens of O. longmenmontis sp. nov. were clustered into one clade, which was independently clustered into a clade containing O. nanjiangensis and O. chuanbeiensis
The new species distinctly differs from O. chuanbeiensis by the following characters: broader head, lacking spines on lip margin in male, spiny patches on chest small with thick sparse spines in male, nuptial spines thick sparse on fingers, toe webbing at base, tibio-tarsal articulation reaching beyond nostril when leg stretched forward, and having significant differences on HDL, HDW, SL,NS, IND, UEW, LW (p < 0.05 when comparing with the latter; Table 3)
Summary
The toothed toad genus Oreolalax Myers & Leviton, 1962 belongs to Leptobrachiinae Dubois, 1980 of Megophryidae Bonaparte, 1850 (Amphibia, Anura). The genus currently contains 18 species (see list of Frost 2019), of which 17 species are known from southwestern China throughout the provinces of Sichuan, Shaanxi, Guizhou, Yunnan, Chongqing, Hunan, and Hubei (Fei et al 2012, 2016), and one from northernmost Vietnam (Nguyen et al 2013). The phylogenetic relationships between many species of the genus have been not resolved (Fu et al 2007; Nguyen et al 2013) species of the genus in China had been divided into several species groups based on morphology (Fei et al 2005, 2009)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
