Journal
ZOOTAXA
Volume 4388, Issue 1, Pages 1-21Publisher
MAGNOLIA PRESS
DOI: 10.11646/zootaxa.4388.1.1
Keywords
Acoustics; Leptolalax applebyi species group; tadpole morphology; Son Tra Nature Reserve
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Funding
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [106-NN.05-2015.08]
- Russian Foundation of Basic Research [RFBR 15-29-02771]
- Russian Science Foundation (RSF grant) [14-50-00029]
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Morphological, acoustic and molecular analyses result in the description of Leptolalax rowleyae sp. nov., a new species of frog in the Megophryidae, belonging to the L. applebyi Rowley & Cao species group from central Vietnam. It differs from its congeners by a combination of the following morphological attributes: (1) adult SVL 23.4-25.4 mm in males and 27-27.8 mm in females; (2) presence of distinct dark/brown dorsolateral markings, including black spots on flanks; (3) pinkish milk-white to light brown chest and belly with numerous white speckles; (4) tympanum distinct; (5) absence of webbing or lateral dermal fringes on fingers and toes; (6) pectoral glands comparatively small (3.3-4.7% of SVL); (7) ventrolateral glands indistinct; and (8) iris bicolored with copper tint in upper half fading to golden in lower third of iris. The male advertisement call of the new species consists of 4-6 notes, lacking a distinct introductory note, with an average dominant frequency of 3.2-3.5 kHz. The description of the tadpole constitutes the first description of larval morphology for a member of the L. appleybi species group. Genetically, an uncorrected sequence divergence of 7.4% for 16S rRNA separates the new species from its two closest relatives, L. ardens and L. melicus in the L. applebyi species group.
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