Researchers have described Oreolalax lizipingensis, a new species of toothed toad from China's Sichuan Province. The study was published in Zoosystematics and Evolution on September 2, 2026. The type series was collected at Menghuocheng, near the Liziping National Nature Reserve.
From tadpoles to a species description
The first clue came from three tadpoles found in a mountain stream in October 2022. Their genetic sequences differed from data for known members of the genus Oreolalax. In summer 2025, researchers collected eight adult specimens and an egg clutch at the same location.
Body length among the five males examined ranged from 37.6 to 43.3 mm, while the three females measured from 44.2 to 52.7 mm. Distinguishing features include a dark triangular mark between the eyes, nearly round dark brown warts on the back, and weakly developed webbing between the toes.
Anatomy, calls and DNA
The authors analysed sections of three mitochondrial genes, 12S, 16S and COI. All samples of the new form made up a distinct monophyletic lineage. Morphometric comparison also separated the Menghuocheng animals from the outwardly similar O. schmidti.
Analysis of mating calls provided further evidence. The calls of the two species have a similar overall structure, but the first phase in O. lizipingensis is shorter, contains fewer pulses and has a lower dominant frequency. The agreement between morphological, bioacoustic and molecular evidence supported its description as a distinct species.
Known from a single locality
O. lizipingensis is currently known only from high-altitude streams at Menghuocheng, between 2,400 and 3,100 metres above sea level. The animals were found in well-preserved mountain forest beside small, fast-flowing streams with stony beds.
The sample studied is not sufficient to estimate the population size or full range. The authors recommend further surveys of suitable nearby habitats and long-term monitoring. The species has not yet been assigned a formal conservation status.
