Abstract
Gehyra barea is a poorly known gecko species from the southern Banda Islands, Maluku Province, Indonesia, that has received scant attention since it was described in 1926. A combination of morphological characters distinguish the types of this species from all other described Gehyra, and suggest that it is a distinct taxon. These same morphological characters occur in two recently collected specimens from the Raja Ampat Islands, just off the west coast of New Guinea, that we assign to this species, extending the known range of the taxon by over six hundred kilometres. We provide a revised and extended diagnosis and description of the species based on these new specimens. Morphological and genetic data from these specimens indicate G. barea is closely related to Gehyra baliola from further east in southern New Guinea, and that these species form a clade with Geyhra oceanica. Gehyra is a taxonomically challenging group, and the status of most species from the Melanesian region is in need of review.References
Bauer, A.M. & Henle, K. (1994) Gekkonidae (Reptilia:Sauria) Das Tierreich. Walter de Gruyter, 109, 1–306.
Bauer, A.M. & Sadlier, R.A. (2000) The herpetofauna of New Caledonia. Society for the Study of Reptiles and Amphibians.
Beckon, W.N. (1992) The giant pacific geckos of the genus Gehyra: Morphological variation, distribution, Distribution and Biogeography. Copeia, 1992, 443–460.
Beehler, B. (2007) Papuan terrestrial biogeography with special reference to the birds. Pp 3–13. In 'The Ecology of Papua.' Part one. Eds Andrew J. Marshall and Bruce Beehler. Periplus, Singapore.
Brongesma, L.D. (1934) Contributions to the Indo-Australian Herpetology. Zoologische. Medelingen Leiden, 17, 161–251.
Cogger, H.G. (2000) Reptiles and amphibians of Australia. 6th Edition. Reed New Holland, Sydney.
Daan, S. & Hillenius, D. (1966) Catalogue of the type specimens of amphibians and reptiles in the Zoological Museum, Amsterdam. Beaufortia, 13, 117–144.
Fisher, R.N. (1997) Dispersal and evolution of the Pacific Basin gekkonid lizards Gehyra oceanica and Gehyra mutilata. Evolution, 51, 906–921.
Horner, P. (2005) Gehyra koira sp. nov. (Reptilia: Gekkonidae), a new species of lizard with two allopatric subspecies from the Ord-Victoria region of north-western Australia and a key to the Gehyra australis species complex. The Beagle, 21, 165–174.
King, M. & Horner, P. (1989) Karyotypic evolution in Gehyra (Gekkonidae: Reptilia). V. A new species from Papua New Guinea and the distribution and morphometrics of Gehyra oceanica (Lesson). The Beagle, 6, 169–178.
King, M., Sadlier, R.A. & Horner, P. (1989) A note on the status of Gehyra baliola (Duméril and Duméril, 1851) in Australia. The Beagle, 6, 163–167.
Kopstein, P.F. (1926) Reptilien von den Molukken und den benachbarten Inseln. Zoologische Mededeelingen Leiden, 1, 71–112.
Lynch, M. & Crease, T.J. (1990) The analysis of population survey data on DNA sequence variation. Molecular Biology and Evolution. 7, 377–394.
Nei, M. (1987) Molecular Evolutionary Genetics. Columbia University Press, New York, 375 pp.
Oliver, P.M., Tjaturadi, B., Mumpuni, K. & Richards, S. (2008) A new species of large Cyrtodactylus (Squamata: Gekkonidae) from Melanesia. Zootaxa, 1894, 59–68.
Oliver, P., Edgar, P., Mumpuni, K., Iskandar, D.T. & Lilley, R. (2009) A new species of bent-toed gecko (Cyrtodactylus: Gekkonidae) from Seram Island, Indonesia. Zootaxa, 2115, 47–55.
Posada, D. & Crandall, K.A. (1998) Modeltest: testing the model of DNA substitution. Bioinformatics, 14, 817–818.
Rocha, S., Ineich, I. & Harris, D.J. (2009) Cryptic variation and recent bipolar range expansion within the Stumped-toed Gecko Gehyra mutilata across Indian and Pacific Oceans. Contributions to Zoology, 78, 1–8.
Ronquist, F. & Huelsenbeck, J.P. (2003) MrBayes 3: Bayesian phylogenetic inference under mixed models. Bioinformatics, 19, 1572–1574.
Rozas, J., Sánchez-DelBarrio, J.C., Messeguer, X. & Rozas, R. (2003) DnaSP, DNA polymorphism analyses by the coalescent and other methods. Bioinformatics, 19, 2496–2497.
Siebert, L. & Simkin, T. (2002) Volcanoes of the World: an Illustrated Catalog of Holocene Volcanoes and their Eruptions. Smithsonian Institution, Global Volcanism Program Digital Information Series, GVP-3, http://www.volcano.si.edu/world/ (last accessed 8/12/2009)
Sistrom, M.J., Hutchinson, M.N., Hutchinson, R.G. & Donnellan, S.C. (2009) Molecular phylogeny of Australian Gehyra (Squamata: Gekkonidae) and taxonomic revision of Gehyra variegata in south-eastern Australia. Zootaxa, 2277, 14–32.
Stamatakis, A. (2006) RAxML-VI-HPC: Maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models. Bioinformatics, 22, 2688–2690.
Stamatakis, A., Hoover, P. & Rougemont, J. (2008) A rapid bootstrap algorithm for the RAxML web-servers. Systematic Biology, 75, 758–771.
Uetz, P. & Hallerman, J. (2009) TIGR reptile database. www.reptile-database.org. (last accessed 17/9/2009)