Journal of Zoology Journal of Zoology. Print ISSN 0952-8369 Continental speciation in the tropics: contrasting biogeographic patterns of divergence in the Uroplatus leaf-tailed gecko radiation of Madagascar C. J. Raxworthy1, R. G. Pearson1, B. M. Zimkus1,Ã, S. Reddy1,w, A. J. Deo1,2,z, R. A. Nussbaum3 & C. M. Ingram1 1 American Museum of Natural History, New York, NY, USA 2 Department of Biology, New York University, New York, NY, USA 3 Division of Amphibians and Reptiles, Museum of Zoology, University of Michigan, Ann Arbor, MI, USA Keywords Abstract speciation; biogeography; systematics; Reptilia; Gekkonidae; Madagascar. A fundamental expectation of vicariance biogeography is for contemporary cladogenesis to produce spatial congruence between speciating sympatric clades. Correspondence The Uroplatus leaf-tailed geckos represent one of most spectacular reptile radia- Christopher J. Raxworthy, American tions endemic to the continental island of Madagascar, and thus serve as an Museum of Natural History, Central Park excellent group for examining patterns of continental speciation within this large West at 79th Street, New York, NY 10024- and comparatively isolated tropical system. Here we present the first phylogeny 5192, USA. Email:
[email protected] that includes complete taxonomic sampling for the group, and is based on morphology and molecular (mitochondrial and nuclear DNA) data. This study ÃCurrent address: Department of includes all described species, and we also include data for eight new species. We Herpetology, Museum of Comparative find novel outgroup relationships for Uroplatus and find strongest support for Zoology, Harvard University, 26 Oxford Paroedura as its sister taxon. Uroplatus is estimated to have initially diverged Street, Cambridge, MA 02138, during the mid-Tertiary in Madagascar, and includes two major speciose radia- w USA.