Taxonomic Notes on Megophrys Frogs (Megophryidae: Anura) of Vietnam, with Description of a New Species

Nikolai L. Orlov, Nikolay A. Poyarkov, Jr., Tao Thien Nguyen


A new species, Megophrys latidactyla sp. nov., is described based on a single specimen collected from Pu Mat National Park, Nghe An Province, northern Vietnam. The new species can be easily distinguished from other known congeners by external morphology. The new species is characterized by its small size with mature male SVL 38.9 mm, fingers with rudimentary web and distinct dermal fringes; finger lengths: I < II < IV < III; subarticular tubercles on fingers present: 1, 1, 2; 1; toes very flattened with wide lateral fringes; toe lengths: I < II < V < III < < IV; subarticular tubercles on toes present: 1, 1, 2, 3, 2; feet webbed: I 13/4 – 21/2 II 2 – 31/4 III 21/2 – 33/4 IV 33/4 – 2 V; fringing on toes continues to the inner side of tibia as a broad dermal flap; head flat, wider than long (HL/HW — 0.85); eyes large, protuberant, with a series of short palpebral horns on the upper eyelid; vomerine teeth present; vomeral ridges distinct, narrow, oblique; body dorsoventrally compressed; dorsum tuberous; ventral surfaces smooth; two oblique ridges forming a V-shaped figure at the head basis and scapular region; transverse fold in the middle part of the dorsum; oblique fold resembling an inverted V-shape in the rear part of the dorsum; tympanum rounded, large (TD/ED — 0.85); supratympanic fold well-developed; nuptial pad prominent, large, velvet, covering more than a half of the length of the finger I; coloration of dorsum light-brown with dark spots; belly marbled with alternating dark and light spots. The new species is the tenth known Megophrys in Vietnam, and represents the first record of Megophrys other than M. major in the northern part of the Annamite (Truong Son) Mountains. Composition and distribution of the genus Megophrys in Vietnam is discussed. We also provide a preliminary identification key to the Vietnamese species of Megophrys.


Megophrys latidactyla sp. nov.; Megophrys palpebralespinosa; new species; Vietnam; morphology; taxonomic key; Annamite Mountains; Nghe An Province

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Bourret R. (1942), Les Batraciens de l’Indochine, Hanoi, Institut Océanographique de l’Indochine.

Delorme M., Dubois A., Grosjean S., and Ohler A. (2006), «Une nouvelle ergotaxinomie des Megophryidae (Amphibia, Anura)», Alytes, 24, 6 – 21.

Dubois A. and Ohler A. (1998), «A new species of Leptobrachium (Vibrissaphora) from northern Vietnam, with a review of the taxonomy of the genus Leptobrachium (Pelobatidae, Megophryinae)», Dumérilia, 4(1), 1 – 32.

Fei L. (1999), Atlas of amphibians of China, Edited by Committee, C. W. P. Zhengzhou: Henan Publishing House of Science and Technology, Chengdu.

Fei L. and Ye C.-Y. (2000), The Colour Handbook of the Amphibians of Sichuan, Sichuan Forestry Department, Chengdu Institute of Biology of the Chinese Academy of Sciences, Chengdu.

Fei L., Hu S.-Q., Ye C.-Y., and Huang Y.-Z. (2009), Fauna Sinica. Amphibia. Vol. 2. Anura, Chinese Academy of Science, Science Press, Beijing.

Fei L., Ye C.-Y., and Jiang J.-P. (2010), Colored Atlas of Chinese Amphibians, Sichuan Publishing Group/Sichuan Publishing House of Science and Technology.

Frost D. R. (2015), Amphibian species of the world: An Online Reference, ver. 6.0, American Museum of Natural History, New York. Available from (accessed May 2015).

Frost D. R., Grant T., Faivovich J., Bain R. H., Haas A., Haddad C. F. B., de Sá R. O., Channing A., Wilkinson M., Donnellan S. C., Raxworthy C. J., Campbell J. A., Blotto B. L., Moler P. E., Drewes R. C., Nussbaum R. A., Lynch J. D., Green D. M., and Wheeler W. C. (2006), «The amphibian tree of life», Bull. Am. Mus. Nat. Hist., 297, 1 – 370.

Geissler P., Hartmann T., Ihlow F., Rödder D., Poyarkov N. A., Jr., Nguyen T. Q., Ziegler T. and Böhme W. (2015), «The Lower Mekong: an insurmountable barrier for amphibians in southern Indochina?» Biol. J. Linn. Soc., 2015, 1 – 10.

Glaw F. and Vences M. (1994), A Fieldguide to the Amphibians and Reptiles of Madagascar. Second Edition, including Mammals and Freshwater Fish, Köln.

Inger R. F., Orlov N., and Darevsky I. (1999), «Frogs of Vietnam: a report on new collections», Fieldiana Zool., 92, 1 – 46.

Jiang J.-P., Ye C.-Y., and Fei L. (2008), «A new horn toad Megophrys sangzhiensis from Hunan, China (Amphibia, Anura)», Zool. Res./Dongwuxue Yanjiu Kunming, 29, 219 – – 222.

Jiang J. P., Yuan F. R., Xie F., and Zheng Z. H. (2003), «Phylogenetic relationships of some species and genera in Megophryids inferred from partial sequences of mitochondrial 12S and 16S rRNA genes», Zool. Res., 24(4), 241 – 248.

Lathrop A., Murphy R. W., Orlov N. L., and Ho T. C. (1998a), «Two new species of Leptolalax (Anura: Megophryidae) from northern Vietnam», Amphibia–Reptilia, 19, 253 – 267.

Lathrop A., Murphy R. W., Orlov N. L., and Ho T. C. (1998b), «Two new species of Leptobrachium (Anura: Megophryidae) from the Central Highlands of Vietnam with a redescription of Leptobrachium chapaense», Russ. J. Herpetol., 5(1), 51 – 60.

Le D. T., Pham A. V., Nguyen S. L. H., Ziegler T., and Nguyen T. Q. (2015), «First records of Megophrys daweimontis Rao and Yang, 1997 and Amolops vitreus (Bain, Stuart and Orlov, 2006) (Anura: Megophryidae, Ranidae) from Vietnam», Asian Herpetol. Res., 6, 66 – 72.

Li C. and Wang Y.-Z. (2008), «Taxonomic review of Megophrys and Xenophrys, and a proposal for Chinese species (Megophryidae, Anura)», Acta Zootaxon. Sin., 33, 104 – – 106.

Li Y.-L., Jin M.-J., Zhao J., Liu Z.-Y., Wang Y., and Pang H. (2014), «Description of two new species of the genus Megophrys (Amphibia: Anura: Megophryidae) from Heishiding Nature Reserve, Fengkai, Guangdong, China, based on molecular and morphological data», Zootaxa, 3795, 449 – 471.

Liu C., Hu S.-Q., and Zhao E.-M. (1980), «Preliminary study of genus Vibrissaphora (Amphibia: Salientia) and discussion on problems of amphibian classification», Acta Herpetol. Sin. Old Ser., 3, 1 – 9 [in Chinese].

Mahony S. (2011), «Two new species of Megophrys Kuhl & van Hasselt (Amphibia: Megophryidae), from western Thailand and southern Cambodia», Zootaxa, 2734, 23 – 39.

Mahony S., Sengupta S., Kamei R. G., and Biju S. D. (2011). «A new low altitude species of Megophrys Kuhl and van Hasselt (Amphibia: Megophryidae), from Assam, Northeast India», Zootaxa, 3059, 36 – 46.

Mahony S., Teeling E. C., and Biju S. D. (2013), «Three new species of horned frogs, Megophrys (Amphibia: Megophryidae), from northeast India, with a resolution to the identity of Megophrys boettgeri populations reported from the region», Zootaxa, 3722, 143 – 169.

Mathew R. and Sen N. (2007), «Description of two new species of Xenophrys (Amphibia: Anura: Megophryidae) from north-east India», Cobra. Chennai, 1(2), 18 – 28.

Mo X.-Y., Shen Y.-H., Li H.-H., and Wu X.-S. (2010), «A new species of Megophrys (Amphibia: Anura: Megophryidae) from the northwestern Hunan Province, China», Curr. Zool. Chengdu, 56, 432 – 436.

Nguyen T. Q., Phung T. M., Le M. D., Ziegler T., and Böhme W. (2013), «First record of the genus Oreolalax (Anura: Megophryidae) from Vietnam with description of a new species», Copeia, 2013(2), 213 – 222.

Nguyen V. S., Ho T. C., and Nguyen Q. T. (2009), Herpetofauna of Vietnam, Edition Chimaira, Frankfurt am Main.

Ohler A. (2003), «Revision of the genus Ophryophryne Boulenger, 1903 (Megophryidae) with description of two new species», Alytes, 21(1 – 2), 23 – 44.

Ohler A., Marquis O., Swan S., and Grosjean S. (2000), «Amphibian biodiversity of Hoang Lien Nature Reserve (Lao Cai Province, northern Vietnam) with description of two new species», Herpetozoa, 13(1), 71 – 787.

Orlov N. L. (2005), «A new species of genus Vibrissaphora Liu, 1945 (Anura: Megophryidae) from Mount Ngoc Linh (Kon Tum Province) and analysis of the extent of species overlap in the fauna of amphibians and reptiles of the north-west of Vietnam and Central Highlands», Russ. J. Herpetol., 12(1), 17 – 38.

Orlov N. L. and Ananjeva N. B. (2007), Amphibians of South-East Asia, St. Petersburg Univ. Press, St. Petersburg [in Russian].

Orlov N. L., Dutta S. K., Ghate H. V., and Kent Y. (2006), «New species of Theloderma from Kon Tum Province (Vietnam) and Nagaland State (India) (Anura: Rhacophoridae)», Russ. J. Herpetol., 13(3), 135 – 154.

Orlov N. L., Murphy R. W., Ananjeva N. B., Ryabov S. A., and Ho C. T. (2002), «Herpetofauna of Vietnam, a checklist. Part 1. Amphibia», Russ. J. Herpetol., 9(2), 81 – 104.

Orlov N. L., Poyarkov N. A., Jr., Vassilieva A. B., Ananjeva N. B., Nguyen T. T., Nguyen V. S., and Geissler P. (2012), «Taxonomic notes on rhacophorid frogs (Rhacophorinae: Rhacophoridae: Anura) of southern part of Annamite Mountains (Truong Son, Vietnam), with description of three new species», Russ. J. Herpetol., 19(1), 23 – 64.

Poyarkov N. A., Jr., Rowley J. J. L., Gogoleva S. S., Vassilieva A. B., Galoyan E. A., and Orlov N. L. (2015), «A new species of Leptolalax (Anura: Megophryidae) from the western Langbian Plateau, southern Vietnam», Zootaxa, 3931(2), 221 – 252.

Pyron R. A. and Wiens J. J. (2011), «A large-scale phylogeny of Amphibia including over 2800 species, and a revised classification of advanced frogs, salamanders, and caecilians», Mol. Phylogen. Evol., 61, 543 – 583.

Rao D.-Q. and Wilkinson J. A. (2008), «Phylogenetic relationships of the mustache toads inferred from mtDNA sequences», Mol. Phylogen. Evol., 46, 61 – 73.

Rao D.-Q. and Yang D.-T. (1997), «The karyotypes of Megophryinae (Pelobatidae) with a discussion on their classification and phylogenetic relationships», Asian Herpetol. Res., 7, 93 – 102.

Taylor E. H. (1962), «The amphibian fauna of Thailand», Univ. Kansas Sci. Bull., 43, 265 – 599.

Wang Y., Zhao J., Yang J., Zhou Z., Chen G., and Liu Y. (2014), «Morphology, molecular genetics, and bioacoustics support two new sympatric Xenophrys toads (Amphibia: Anura: Megophryidae) in Southeast China», PlosONE, 9(4), 1 – 15.

Wang Y.-D., Zhang T.-D., Zhao J., Sung Y.-H., Yang J.-H., Pang H., and Zhang Z. (2012), «Description of a new species of the genus Xenophrys Günther, 1864 (Amphibia: Anura: Megophryidae) from Mount Jinggang, China, based on molecular and morphological data», Zootaxa, 3546, 53 – 67.

Yang D.-T., Li S., Liu W., and Lü S. (1991), The Amphibia Fauna of Yunnan, China Forestry Publishing House, Beijing.

Zhao E. M. and Adler K. (1993), Herpetology of China, Society for the Study of Amphibians and Reptiles, Oxford, Ohio.

Zheng Y.-C., Li S.-Q., and Fu J.-Z. (2008), «A phylogenetic analysis of the frog genera Vibrissaphora and Leptobrachium, and the correlated evolution of nuptial spine and reversed sexual size dimorphism», Mol. Phylogen. Evol., 46, 695 – 707.

Zheng Y.-C., Mo B.-H., Liu Z.-J., and Xeng X.-M. (2004a), «Phylogenetic relationships of megophryid genera (Anura: Megophryidae) based on partial sequences of mitochondrial 16 rRNA gene», Zool. Res., 25(3), 205 – 213.

Zheng Y.-C., Xeng X.-M., Yuan Y.-Z., and Liu Z.-J. (2004b), «Phylogenetic position of Ophryophryne and four Leptobrachium group genera in Megophryidae (Anura)», Sichuan J. Zool., 23(3), 290 – 295.

Ziegler T. (2002), Die Amphibien und Reptilien eines Tieflandfeuuchtwald — Schutzgebietes in Vietnam, Natur- und Tier Verlag, Münster.

Ziegler T., Herrmann H.-W., Vu Ngok Thanh, Le Khac Quyet, Nguyen Tan Hiep, Cao Xuan Chinh, Luu Minh Thank, and Dinh Huy Tri (2004), «The amphibians and reptiles of the Phong Nha-Ke Bang National Park, Quang Binh Province, Vietnam», Hamadryad, 28(1 – 2), 19 – 42.



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