Abstract
A new species of the genus Oligodon Fitzinger, 1826, Oligodon wagneri sp. nov., is described on the basis of a singlespecimen originating from Nias Island, off the west coast of Sumatra, Indonesia. It differs from other species of the regionby the combination of a constant number (15) of dorsal scale rows, undivided hemipenes, entire anal plate, form of den-tition, and dorsal pattern of white crossbars alternating with three irregular reticulations. This new species is comparedwith other species of the Greater Sunda Islands with 15 or 17 dorsal scale rows. An updated checklist and key to Oligodon species of the region of Sumatra is provided.References
Claine, J. (1892) Un an en Malaisie. Le Tour du Monde, 63, 369–400.
Collins, N.M., Sayer, J.A. & Whitmore, T.C. (Eds.) (1991) The conservation atlas of tropical forests – Asia and the Pacific. Simon & Schuster, New York, 256 pp.
Das, I. (2010) A field guide to the Reptiles of South-east Asia. New Holland Publishers (UK) Ltd, London-Cape Town-Sydney-Auckland, 376 pp.
David, P., Das, I. & Vogel, G. (2011) On some taxonomic and nomenclatural problems in Indian species of the genus Oligodon Fitzinger, 1826 (Squamata: Colubridae). Zootaxa, 2799, 1–14.
David, P. & Vogel, G. (1996) The Snakes of Sumatra. An annotated checklist and key with natural history notes. Edition Chimaira, Frankfurt-am-Main, 260 pp.
David, P., Vogel, G. & Van Rooijen, J. (2008) A revision of the Oligodon taeniatus (Günther, 1861) (Squamata: Colubridae) group, with the description of three new species from the Indochinese Region. Zootaxa, 1965, 1–45.
De Rooij, N. (1917) The reptiles of the Indo-Australian Archipelago. II. Ophidia. E. J. Brill, Leyden, xvi + 334 pp.
Dowling, H.G. (1951) A proposed standard system of counting ventrals in snakes. British Journal of Herpetology, 1 (5), 97–99.
Fischer, J.G. (1885) Über eine Kollektion Reptilien und Amphibien von der Insel Nias und über eine zweite Art der Gattung Anniella Gray. Abhandlungen aus dem Gebiete der Naturwissenschaften herausgegeben von dem Naturwissenschaftlichen Verein in Hamburg, 9 (1), 3–10, Pl. 1.
Green, M.D., Orlov, N.L. & Murphy, R.W. (2010) Toward a phylogeny of the Kukri snakes, genus Oligodon. Asian Herpetological Research, 1 (1), 1–21.
Leviton, A.E. (1963) Contributions to a review of Philippine snakes, I. The snakes of the genus Oligodon. The Philippine Journal of Science, 91 [1962] (4), 459–484.
Manthey, U. & Grossmann, W. (1997) Amphibien & Reptilien Südostasiens. Natur und Tier-Verlag, Münster, 512 pp.
Pauwels, O.S.G., Wallach, V., David, P. & Chanhome, L. (2002) A new species of Oligodon Fitzinger, 1826 (Serpentes, Colubridae) from southern Peninsular Thailand. Natural History Journal of Chulalongkorn University, Bangkok, 2 (2), 7–18.
Sanders, K.L., Malhotra, A. & Thorpe, R.S. (2002) A contribution to the systematics of two commonly confused pitvipers from the Sunda Region: Trimeresurus hageni and T. sumatranus. Bulletin of the Natural History Museum, London, (Zoology), 68 (2), 107–111.
Sanders, K.L., Malhotra, A. & Thorpe, R.S. (2004) Ecological diversification in a group of Indomalayan Pitvipers (Trimeresurus): convergence in taxonomically important traits has implications for species identification. Journal of Evolutionary Biology, 17, 721–731.
Smith, M.A. (1943) The fauna of British India, Ceylon and Burma, including the whole of the Indo-chinese subregion. Reptilia and Amphibia. Vol. III, Serpentes. Taylor & Francis, London, xii + 583 pp.
Taylor, E.H. (1922) The snakes of the Philippine Islands. Bureau of Printing, Manila, 312 pp., Pls. 1–37.
Tillack, F. (2008) Oligodon rhombifer Werner, 1924, a junior synonym of Oligodon ancorus (Girard, 1857) (Reptilia: Squamata: Colubridae). Russian Journal of Herpetology, 15 (2), 122–128.
Tillack, F. & Günther, R. (2010) Revision of the species of Oligodon from Sumatra and adjacent islands, with comments on the taxonomic status of Oligodon subcarinatus (Günther, 1872) and Oligodon annulifer (Boulenger, 1893) from Borneo (Reptilia, Squamata, Colubridae). Russian Journal of Herpetology, 16 [2009] (4), 265–294.
Wagner, F.W. (1975) A revision of the Asian colubrid snakes Oligodon cinereus (Günther), Oligodon joynsoni (Smith), and Oligodon cyclurus (Cantor). Unpublished MS thesis, Louisiana State University, Baton Rouge (USA), 97 pp.
Wagner, F.W. (1976) A reassessment of infrageneric groupings and relationships of the Asian Colubrid snake genus Oligodon. Louisiana State University, Seminar 511, Baton Rouge, 37 unnumbered pp.
Whitten, T., Damanik, S.J., Anwar, J. & Hisyam, N. (2000) The ecology of Indonesia series. Volume I. The ecology of Sumatra. Oxford University Press, Oxford, xxxiii + 478 pp.