Zoological Research ›› 2018, Vol. 39 ›› Issue (3): 185-201.doi: 10.24272/j.issn.2095-8137.2018.009

Special Issue: Amphibians & reptiles Genetics & evolution

• Articles • Previous Articles     Next Articles

A new species of the genus Leptolalax (Anura: Megophryidae) from southern Vietnam

Tang Van Duong1,2, Dang Trong Do3, Chung Dac Ngo4, Truong Quang Nguyen5,6, Nikolay A. Poyarkov, Jr.2,7,*   

  1. 1 Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Hanoi, Vietnam
    2 Department of Vertebrate Zoology, Biological Faculty, Lomonosov Moscow State University, Moscow 119234, Russia
    3 Faculty of Natural Sciences, Phu Yen University, Tuy Hoa, Phu Yen, Vietnam
    4 College of Education, Hue University, Hue, Vietnam
    5 Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Vietnam
    6 Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
    7 Joint Russian-Vietnamese Tropical Research and Technological Center, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Online:2018-05-18 Published:2018-04-27
  • Contact: Nikolay A. Poyarkov, Jr.,E-mail:n.poyarkov@gmail.com E-mail:n.poyarkov@gmail.com
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Abstract: We describe a new species of megophryid frog from Phu Yen Province in southern Vietnam. Leptolalax macrops sp. nov. is distinguished from its congeners by a combination of the following morphological attributes: (1) body size medium (SVL 28.0–29.3 mm in three adult males, 30.3 mm in single adult female); (2) supra-axillary glands present, creamy white; ventrolateral glands indistinct; (3) tympanum externally distinct; (4) dorsal skin roughly granular with larger tubercles, dermal ridges on dorsum absent; (5) rudimentary webbing present between fingers I–II and II–III; rudimentary webbing between all toes; fingers and toes without dermal fringes; (6) in life ventral surface greyish-violet with white speckling; (7) supratympanic fold distinct, dark brown in life; (8) iris bicolored, typically golden in upper half, fading to golden green in lower half; (9) tibia short (TbL/SVL 0.44–0.45 in males); and (10) eyes large and protuberant (ED/SVL 0.15–0.16 in males). From all congeners for which comparable sequences are available, the new species differs markedly in the 16S rRNA mitochondrial gene sequence (P-distance>5.7%). The new species is currently known only from montane evergreen tropical forests of Song Hinh District, Phu Yen Province, and M’Drak District of Dak Lak Province at elevations of 470–630 m a.s.l. We suggest the new species should be considered as Data Deficient following the IUCN’s Red List categories. We also report a previously unknown Leptolalax mtDNA lineage from an evergreen tropical forest in the Hoa Thinh District of Phu Yen Province, which may also represent an undescribed species.

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