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Published January 26, 2026 | Version v1
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Description of a new species of the Asian newt genus Tylototriton Anderson, 1871 (Urodela, Salamandridae) from central China

Authors/Creators

  • 1. College of Food Engineering, Moutai Institute, Renhuai, China|Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
  • 2. Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China|School of Life Science, Jianghan University, Wuhan, China
  • 3. College of Food Engineering, Moutai Institute, Renhuai, China
  • 4. Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
  • 5. Houhe National Nature Reserve Administration Bureau, Wufeng, China
  • 6. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, China

Description

Based on morphological comparisons and molecular phylogenetic analyses, a new species of the genus Tylototriton from Wufeng County, Hubei Province, China, is described. Phylogenetic analyses of mitochondrial 16S rRNA and ND2 gene sequences supported the new species as an independent clade, sister to a clade containing Tylototriton dabienicus and T. gaowangjienensis. The uncorrected p-distances of the 16S rRNA and ND2 genes between the new species and its closest congeners were 0.7% and 1.7%, respectively. Divergence time estimates indicated separation from T. dabienicus and T. gaowangjienensis at 2.53 million years ago (Mya; 95% highest posterior density [HPD]: 1.53–3.72 Mya). Bayesian species delimitation (BFD and bPTP analyses) strongly supported the new taxon as a distinct species. Morphologically, it is distinguished by: (1) moderate body size (SVL 63.7–77.2 mm in males, 74.9–88.1 mm in females); (2) head width exceeding head length; (3) presence of a gular fold; (4) tail shorter than snout–vent length; (5) orange distal digits, cloacal periphery, and tail margin; (6) limb tips meeting when fore- and hindlimbs are pressed along the trunk; (7) fingertips extending beyond the snout when forelimbs are stretched forward; and (8) continuous, indistinct, nodule-like warts on the body sides.

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