A New Caruncle-bearing Limnonectes (Anura: Dicroglossidae) from the Phu Phan Mountain Range in Northeastern Thailand

Authors

  • Attapol Rujirawan Animal Systematics and Ecology Speciality Research Unit, Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, THAILAND: Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, THAILAND
  • Siriporn Yodthong Department of Biological Science, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, THAILAND
  • Pratyaporn Wanchai Department of Biological Science, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, THAILAND
  • Bryan L. Stuart North Carolina Museum of Natural Sciences, 11 West Jones Street, Raleigh, North Carolina 27601, USA
  • Anchalee Aowphol Animal Systematics and Ecology Speciality Research Unit, Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, THAILAND: Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, THAILAND https://orcid.org/0000-0001-9504-4601

DOI:

https://doi.org/10.58837/tnh.25.8.266987

Keywords:

phylogeny, morphology, fanged frog, Indochina, Khorat Plateau

Abstract

We describe a new species of dicroglossid frog in the genus Limnonectes from the Phu Phan Mountain Range, Sakon Nakhon Province, northeastern Thailand. Molecular phylogenetic analyses, based on the mitochondrial 16S ribosomal RNA gene, revealed that Limnonectes sirindhornae Rujirawan, Yodthong & Aowphol, sp. nov. is closely related to L. lauhachindai but has mean uncorrected pairwise genetic divergences of 4.25%. The new species can be distinguished from its congeners by having the combination of SVL 36.7–44.7 mm (n = 8) in adult males, 40.2–45.6 mm (n = 8) in adult females; adult males with hypertrophied heads; adult males with interorbital caruncle weakly developed, low-profiled, U-shaped, without free posterior margin; two enlarged odontoid processes on anterior margin of lower jaw, larger in males than in females; vocal sac opening in males absent; and yellowish coloration in life on ventral surfaces absent.

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Published

2025-10-14

How to Cite

[1]
Rujirawan, A. , Yodthong, S. , Wanchai, P. , Stuart, B. and Aowphol, A. 2025. A New Caruncle-bearing Limnonectes (Anura: Dicroglossidae) from the Phu Phan Mountain Range in Northeastern Thailand. Tropical Natural History. 25, 8 (Oct. 2025), 258–275. DOI:https://doi.org/10.58837/tnh.25.8.266987.

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