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Dressed in black. A New Ansonia Stoliczka, 1870 (Lissamphibia: Anura: Bufonidae) from Gunung Murud, Sarawak, East Malaysia (Borneo)



A new species of stream toad of the genus Ansonia is described from Gunung Murud, Pulong Tau National Park, of northern Sarawak, Malaysia, Borneo. Ansonia vidua, sp. nov., is morphologically distinguished from its Bornean congeners by the following combination of characters: medium size (SVL of adult females 33.5–34.4 mm); body uniformly black-brown in life; absence of a visible pattern on dorsum or limbs; presence of two low interorbital ridges; shagreened skin on dorsum, sides and upper surfaces of the limbs with numerous homogeneously small, rounded warts; first finger shorter than second; reduced webbing between the toes and an absence of a sharp tarsal ridge. Uncorrected genetic distances between related taxa of > 4.3% in 16S rRNA gene support its status as a hitherto undescribed species.


Amphibia, Ansonia vidua sp. nov., Pulong Tau National Park, systematics

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Beaman, J.H. & Anderson, C. (1997) The summit flora of Mt. Murud, Sarawak, Malaysia. Contributions from the University of Michigan Herbarium, 21, 85–141.

Beaman, J.H. (1999) Preliminary enumeration of the summit flora, Mount Murud, Kelabit Highlands, Sarawak. ASEAN Review of Biodiversity and Environmental Conservation, pp 23. Available from: (accessed 6 May 2014)

Chan, K.O., Wood, P.L., Anuar, S.M.S., Muin, M.A., Quah, E.S.H., Sumarli, A.X.Y. & Grismer, L.L. (2014) A new species of upland stream toad of the genus Ansonia Stoliczka, 1870 (Anura: Bufonidae) from northeastern peninsular Malaysia. Zootaxa, 3764 (4), 427–440.

Cracraft, J. (1992) The species of the birds-of-paradise (Paradisaeidae): applying the phylogenetic species concept to a complex pattern of diversification. Cladistics, 8, 1–43.

Das, I. (2005) A new species of Polypedates (Anura: Rhacophoridae) from Gunung Murud, Sarawak (northwestern Borneo). Raffles Bulletin of Zoology, 53, 265–270.

Das, I. (2008) Two new species of Pelophryne (Anura: Bufonidae) from Gunung Murud, Sarawak (northwestern Borneo). Raffles Bulletin of Zoology, 56, 435–443.

de Queiroz, K. (2007) Species concepts and species delimitation. Systematic Biology, 56, 879–886.

Dring, J.C.M. (1983) Some new frogs from Sarawak. Amphibia-Reptilia, 4, 103–115.

Frost, D.R. (2013) Amphibian Species of the World: an Online Reference. Version 5.6. Electronic Database. American Museum of Natural History, New York. Available from: (Accessed 10 October 2013)

Frost, D.R., Grant, T., Faivovich, J.N., 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., Drewes, R.C., Nussbaum, R.A., Lynch, R.D., Green, D.M. & Wheeler, W.C. (2006) The Amphibian tree of life. Bulletin of the American Museum of Natural History, 297, 1–370.

Geneious (2015–1014) Geneious Pro 6.1.5., created by Biomatters. Available from (accessed 6 May 2014)[0001:tatol];2

Guindon S. & Gascuel O. (2003) A simple, fast, and accurate algorithm to estimate large phylogenies by maximum likelihood. Systematic Biology, 52, 696–704.

Haas, A. & Das, I. (2008) Larval identities of Ansonia hanitschi Inger, 1960 (Amphibia: Bufonidae) and Polypedates colletti (Boulenger, 1890) (Amphibia: Rhacophoridae) from East Malaysia (Borneo). Salamandra, 44, 85–100.

Haas, A., Wolter, J., Hertwig, S. & Das, I. (2009) Larval morphologies of three species of stream toads, genus Ansonia (Amphibia: Bufonidae) from East Malaysia (Borneo), with a key to known Bornean Ansonia tadpoles. Zootaxa, 2302, 1–18.

Hertwig, S.T., Das, I., Schweizer, M., Brown, R. & Haas, A. (2011) Phylogenetic relationships of the Rhacophorus everetti-group and implications for the evolution of reproductive modes in Philautus (Amphibia: Anura: Rhacophoridae). Zoologica Scripta, 41, 29–46.

Inger, R.F. (1960) A review of the Oriental toads of the genus Ansonia Stoliczka. Fieldiana: Zoology, 39, 473–503.

Inger, R.F. (1966) The systematics and zoogeography of the Amphibia of Borneo. Fieldiana: Zoology, 52, 1–402.

Inger, R.F. (1992) Variation of apomorphic characters in stream-dwelling tadpoles of the bufonid genus Ansonia. Zoological Journal of the Linnean Society, 105, 225–237.

Inger, R.F. & Dring, J.C.M. (1988) Taxonomic and ecological relations of Bornean stream toads allied to Ansonia leptopus (Günther) (Anura: Bufonidae). Malayan Nature Journal, 41, 461–471.

Inger, R.F. & Stuebing, R.B. (2005) A Field Guide to the Frogs of Borneo. Second Edition. Natural History Publications (Borneo), Sdn. Bhd., Kota Kinabalu, viii + 201 pp.

Inger, R.F. & Stuebing, R.B. (2009) New species and new records of Bornean frogs (Amphibia: Anura). Raffles Bulletin of Zoology, 57, 527–535.

Katoh, K., Misawa, K., Kuma, K. & Miyata, T. (2002) MAFFT: a novel method for rapid multiple sequence alignment based on fast Fourier transform. Nucleic Acids Research, 30, 3059–3066.

Malkmus, R., Manthey, U., Vogel, G., Hoffmann, P. & Kosuch, J. (2002) Amphibians & Reptiles of Mount Kinabalu (North Borneo). A.R.G. Gantner Verlag, Ruggell, 424 pp.

Matsui, M., Khonsue, W. & Nabhitabhata, J. (2005) A new Ansonia from the Isthmus of Kra, Thailand (Amphibia, Anura, Bufonidae). Zoological Science, Tokyo, 22, 809–814.

Matsui, M., Tominaga, A., Liu, W., Khonsue, W., Grismer, L.L., Diesmos, A.C., Das, I., Sudin, A., Yambun, P., Yong, H.-S., Sukumaran, J. & Brown, R.M. (2010) Phylogenetic relationships of Ansonia from Southeast Asia inferred from mitochondrial DNA sequences: systematic and biogeographic implications (Anura: Bufonidae). Molecular Phylogenetics and Evolution, 54, 561–570.

Matsui, M., Nishikawa, K., Yeo, S.T. & Eto, K. (2012) Notes on a rare Bornean bufonid Ansonia latidisca Inger, 1966, with special reference to its phylogenetic position. Current Herpetology, 31, 87–96.

Mjöberg, E. (1925) An expedition to the Kelabit country and Mt. Murud, Sarawak. Geographical Review, 15, 411–427.

Morrison, D.A. (2009) Why would phylogeneticists ignore computerized sequence alignment? Systematic Biology, 58, 150–158.

Nixon, K.C. & Wheeler, Q.D. (1990) An amplification of the Phylogenetic Species Concept. Cladistics, 6, 211–223.

Pui, Y.M., Ong, J.J. & Das, I. (2011) Rediscovery of one of the world's top 10 most wanted ‘lost frogs’, Ansonia latidisca, the Bornean Rainbow Toad, on Gunung Penrissen, Western Sarawak, Borneo. Froglog, 97, 6–7.

Sabaj Pérez, M.H. (Ed.) (2012) Standard symbolic codes for institutional resource collections in herpetology and ichthyology: an online reference. Version 3.0 (23 February 2012). American Society of Ichthyologists and Herpetologists, Washington, D.C. Available from: (accessed 17 October 2013)

Stoliczka, F. (1870) Observations on some Indian and Malayan Amphibia and Reptilia. Journal of the Asiatic Society of Bengal, 39, 134–157 + captions, pls. IX.

van Bocxlaer, I., Biju, S.D., Loader, S.P. & Bossuyt, F. (2009) Toad radiation reveals into-India dispersal as a source of endemism in the Western Ghats-Sri Lanka biodiversity hotspot. BMC Evolutionary Biology, 9, 131.

Wiley, E.O. (1978) The evolutionary species concept reconsidered. Systematic Zoology, 27, 17–26.

Wood, P.L. Jr., Grismer, L.L., Norhayati, A. & Senawi, J. (2008) Two new species of torrent-dwelling toads Ansonia Stoliczka, 1870 (Anura: Bufonidae) from peninsular Malaysia. Herpetologica, 64, 321–340.


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