Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2021-02-10
Page range: 535–546
Abstract views: 184
PDF downloaded: 21

A new Occidozyga from Sarawak, Malaysian Borneo (Anura: Dicroglossidae)

Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, JAPAN
Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, JAPAN Graduate School of Global Environmental Studies, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto, 606-8501, JAPAN
Kitakyushu Museum of Natural History & Human History, Higashida 2-4-1, Yahatahigashi, Kitakyushu, Fukuoka 805-0071, JAPAN
Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences, Gd. Widyasatwaloka, Jl. Raya Jakarta Bogor Km 46, Cibinong, West Java, INDONESIA
Research, Development and Innovation Division, Sarawak Forest Department, Kuching 93250, Sarawak, MALAYSIA
Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, 606-8501, JAPAN
Limnonectes rhacodus mandible cusp mtDNA phylogeny taxonomy Anura


We found a uniquely colored dicroglossid frog of the genus Occidozyga from western Sarawak, East Malaysia. It is divergent from other congeners in morphology and mtDNA sequences. In a molecular phylogeny, this species is the sister lineage to the continental species O. lima and O. martensii with weak support. The species is small with SVL 16–18 mm in males and 18–19 mm in females, without dorsolateral fold but with transverse wrinkles on dorsum, tips of fingers lacking disks but of toes with disks, only first and second toes webbed to disks, and orange-brown dorsum with dark brown band. We thus describe it as a new species.


  1. Das, I., Jankowski, A., Makmor, M.I.B. & Haas, A. (2007) Species diversity, elevational distribution and reproductive modes in an amphibian community at the Matang Range, Sarawak (Borneo). Mitteilungen aus den Hamburgischen Zoologischen Museum und Institut, 104, 141–174.

    Das, I., Min, P.Y., Hsu, W.W., Hertwig, S.T. & Haas, A. (2014) Red hot chili pepper. A new Calluella Stoliczka, 1872 (Lissamphibia: Anura: Microhylidae) from Sarawak, East Malaysia (Borneo). Zootaxa, 3785 (4), 550–560.

    Das, I., Pui, M.Y., Wahab, T., Haas, A. & Hertwig, S. (2015) A Guide to the Amphibians of Kubah National Park and the Matang Range. Institute of Biodiversity and Environmental Conservation, Universiti Malaysia Sarawak, Kota Samarahan, 20 pp.

    Dehling, J.M., Matsui, M. & Yambun, P. (2016) A new small montane species of Philautus (Amphibia, Anura, Rhacophoridae) from Gunung Kinabalu, Sabah, Malaysia (Borneo). Salamandra, 52, 77–90.

    Eto, K., Matsui, M., Hamidy, A., Munir, M. & Iskandar, D. (2018) Two new species of the genus Leptobrachella (Amphibia: Anura: Megophryidae) from Kalimantan, Indonesia. Current Herpetology, 37, 95–105.

    Evans, B.J., Brown, R.M., McGuire, J.A., Supriatna, J., Andayani, N., Diesmos, A., Iskandar, D., Melnick, D.J. & Cannatella, D.C. (2003) Phylogenetics of fanged frogs: testing biogeographical hypotheses at the interface of the Asian and Australian faunal zones. Systematic Biology, 52, 794–819.

    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, J.D., Green, D.M. & Wheeler, W.C. (2006) The amphibian tree of life. Bulletin of the American Museum of Natural History, 297, 1– 370.[0001:TATOL]2.0.CO;2

    Hamidy, A., Matsui, M., Nishikawa, K. & Belabut, D.M. (2012) Detection of cryptic taxa in Leptobrachium nigrops (Amphibia, Anura, Megophryidae), with description of two new species. Zootaxa, 3398, 22–39.

    Hertwig, S.T., Min, P.-Y., Haas, A. & Das, I. (2014) Dressed in black. A new Ansonia Stoliczka, 1870 (Lissamphibia: Anura: Bufonidae) from Gunung Murud, Sarawak, East Malaysia (Borneo). Zootaxa, 3814 (3), 419–431.

    Inger, R.F. (1954) Systematics and zoogeography of Philippine Amphibia. Fieldiana: Zoology, 33, 181–531.

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

    Inger, R.F. & Tan, F.-L. (1996) Checklist of the frogs of Borneo. Raffles Bulletin of Zoology, 44, 551–574.

    Inger, R.F., Boeadi & Taufik, A. (1996) New species of ranid frogs (Amphibia: Anura) from Central Kalimantan, Borneo. Raffles Bulletin of Zoology, 44, 363–369.

    Iskandar, D.T. (1998) Amphibi Java dan Bali. Puslitbang Biologi, LIPI, Bogor, 117 pp.

    Iskandar, D.T., Bickford, D.P. & Arifin, U. (2011) A new Ingerana (Anura, Dicroglossidae) with no external tympanum from Borneo, Indonesia. Raffles Bulletin of Zoology, 59, 213–218.

    Iskandar, D.T., Arifin, U. & Rachmanasah, A. (2011) A new frog (Anura, Dicroglossidae), related to Occidozyga semipalmata Smith, 1927, from the eastern peninsula of Sulawesi, Indonesia. Raffles Bulletin of Zoology, 59, 219–228.

    Matsui, M. (1979) A small collection of amphibians from Thailand. Contributions from the Biological Laboratory, Kyoto University, 25, 295–302.

    Matsui, M. (1984) Morphometric variation analyses and revision of the Japanese toads (genus Bufo, Bufonidae). Contributions from the Biological Laboratory, Kyoto University, 26, 209–428.

    Matsui, M. (1994) A taxonomic study of the Rana narina complex, with description of three new species (Amphibia: Ranidae). Zoological Journal of the Linnean Society, 111, 385–415.

    Matsui, M. (2009) A new species of Philautus (Amphibia, Anura, Rhacophoridae) from the lowland of Sarawak, western Borneo. Zoological Science, 26, 437–442.

    Matsui, M., Panha, S., Khonsue, W. & Kuraishi, N. (2010) Two new species of the “kuhlii” complex of the genus Limnonectes from Thailand (Anura: Dicroglossidae). Zootaxa, 2615 (1), 1–22.

    Matsui, M., Nishikawa, K., Eto, K. & bin Hossman, M.Y. (2020) Two new Ansonia from mountains of Borneo (Anura, Bufonidae). Zoological Science, 37, 1–11.

    Mediyansyah, Hamidy, A., Munir, M. & Matsui, M. (2019) A new tree frog of the genus Kurixalus Ye, Fei & Dubois 1999 (Amphibia: Rhacophoridae) from West Kalimantan, Indonesia. Treubia, 46, 51–72.

    Munir, M., Hamidy, A., Matsui, M., Iskandar, D.T., Sidik, I. & Shimada, T. (2019) A new species of Megophrys Kuhl & Van Hasselt (Amphibia: Megophryidae) from Borneo allied to M. nasuta (Schlegel, 1868). Zootaxa, 4679 (1), 1–24.

    Pui, M.Y., Das, I. & Haas, A. (2013) New records of Limnonectes rhacodus (Inger, Boeadi and Taufik, 1996) (Lissamphibia: Anura: Dicroglossidae) from Sarawak, East Malaysia (Northwestern Borneo). Check List, 9 (6), 1588–1589.

    Roelants, K., Jiang, J. & Bossuyt, F. (2004) Endemic ranid (Amphibia: Anura) genera in southern mountain ranges of the Indian subcontinent represent ancient frog lineages: evidence from molecular data. Molecular Phylogenetics and Evolution, 31, 730–740.

    Shimada, T., Matsui, M., Nishikawa, K. & Eto, K. (2015) A new species of Meristogenys (Anura, Ranidae) from Sarawak, Borneo. Zoological Science, 32, 474–484.

    Taylor, E.H. (1922) Additions to the herpetological fauna of the Philippine Islands. II. Philippine Journal of Science, 21, 257–303.

    Taylor, E.H. (1962) The amphibian fauna of Thailand. The University of Kansas Science Bulletin, 43, 265–599.

    Wahab, T., Das, I., Pui, M.Y. & Haas, A. (2014) A Photographic Guide to the Frogs of Kubah National Park. Sarawak Forestry Corporation, Kuching, 32 pp.

    Waser, L.E., Schweizer, M., Haas, A., Das, I., Jankowski, A., Pui, M.Y. & Hertwig, S.T. (2017) From a lost world: an integrative phylogenetic analysis of Ansonia Stoliczka, 1870 (Lissamphibia: Anura: Bufonidae), with the description of a new species. Organisms Diversity & Evolution, 17, 287–303.