title: Systematics and biogeography of the Hylarana frog (Anura: Ranidae) radiation across tropical Australasia, Southeast Asia, and Africa.
abstract: We present an inclusive molecular phylogeny for Hylarana across its global distribution, utilizing two mitochondrial and four nuclear gene regions for 69 of the 97 currently described species. We use phylogenetic methods to test monophyly of Hylarana, determine relationships among ten putative subgenera, identify major clades, reconstruct biogeographic history, and estimate continental dispersal dates. Results support Hylarana as a monophyletic group originating approximately 26.9MYA and comprising eight clades that partly correspond to currently described subgenera plus two new groups. The African and Australasian species each form clades embedded within a paraphyletic Southeast Asian group. We estimate that Africa and Australasia were colonized by Hylarana s.l. from SE Asia approximately 18.7 and 10.8MYA, respectively. Biogeographic reconstructions also support three separate colonization events in India from Southeast Asia. Examination of museum specimens identified morphological characters useful for delineating subgenera and species. We herein elevate all supported subgenera to genus rank and formally describe two new genera to produce a revised taxonomy congruent with our new phylogenetic and biogeographic findings.
authors.affiliation: Richard Gilder Graduate School, American Museum of Natural History, Central Park West at 79th St, New York, NY 10024, United States; Department of Herpetology, American Museum of Natural History, Central Park West at 79th St, New York, NY 10024, United States. Electronic address: Laoliver927@gmail.com.
authors.forename: Lauren A
authors.initials: LA
authors.lastname: Oliver
authors.affiliation: Department of Herpetology, American Museum of Natural History, Central Park West at 79th St, New York, NY 10024, United States; Department of Ecology, Evolution and Natural Resource Conservation, Rutgers University, New Brunswick, NJ 08901, United States.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Prendini
authors.affiliation: Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, United States.
authors.forename: Fred
authors.initials: F
authors.lastname: Kraus
authors.affiliation: Department of Herpetology, American Museum of Natural History, Central Park West at 79th St, New York, NY 10024, United States.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Raxworthy
mesh_terms: D000349:Africa; D000818:Animals; D001001:Anura / Q000145:classification* / Q000235:genetics; D001210:Asia, Southeastern; D044362:Australasia; D004247:DNA / Q000032:analysis / Q000302:isolation & purification; D016678:Genome; D010802:Phylogeny; D017422:Sequence Analysis, DNA
chemical_list: D004247:DNA
keywords: Lydekker’s Line; Overwater dispersal; Phylogenetics; Taxonomy; Time calibration; Wallace’s Line