A new genus of microteiid lizard from the Atlantic forests of State of Bahia, Brazil, with a new generic name for Colobosaura mentalis, and a discussion of relationships among the Heterodactylini (Squamata, Gymnophthalmidae) ; American Museum novitates, no. 3565

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dc.contributor.authorRodrigues, Miguel Trefaut Urbano.en_US
dc.contributor.authorPellegrino, Katia Cristina Machado.en_US
dc.contributor.authorDixo, Marianna Botelho de Oliveira.en_US
dc.contributor.authorVerdade, Vanessa Kruth.en_US
dc.contributor.authorPavan, Dante.en_US
dc.contributor.authorSuzart Argolo, Ant�onio Jorge.en_US
dc.contributor.authorSites, Jack W.en_US
dc.date.accessioned2007-05-24T17:22:30Z
dc.date.available2007-05-24T17:22:30Z
dc.date.issued2007en_US
dc.description27 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 20-21).en_US
dc.description.abstractA new genus and species of microteiid lizard is described from a series of specimens obtained in the leaf litter at Una (15°10′S, 39°03′W) in the Atlantic forest of southern Bahia, Brazil. It is characterized by the presence of prefrontals, frontoparietals, parietals, and interparietal; parietals longer than wide; distinct ear openings and eyelids; two pairs of genials, absence of collar and occipital scales; dorsal scales anteriorly smooth and becoming gradually lanceolate and mucronate posterior to the forelimb; and four regular transverse series of smooth ventrals that are longer than wide, identical in size. A phylogenetic analysis based on external morphology, osteology, and molecular data confirms this new lizard as a member of the Heterodactylini radiation of Gymnophthalminae. The topology recovered by maximum parsimony (MP) analyses reveals that its closest relatives are the sister taxa Colobosaura modesta and Iphisa elegans (BS = < 50%; Bremer value = 2) and the partitioned Bremer indexes indicated that the largest contribution to this relationship comes from morphology; Colobosaura mentalis, for which a new generic name is here proposed, is basal to this radiation. Our analyses confirm a previous hypothesis suggesting Stenolepis as a member of the Heterodactylini radiation and that the clade composed of Colobodactylus and Heterodactylus is the sister group of the clade formed by Colobosaura mentalis-Stenolepis (BS = 100; Bremer value = 18), Colobosaura modesta-Iphisa (BS = < 50%; Bremer value = 1), and the new genus here described. The support for Heterodactylini monophyly, on the basis of combined MP analyses is higher (BS = 96, Bremer value = 11) than that previously found in molecular-based studies only. Partitioned Bayesian methodology combining molecular and morphological data sets recovered the new genus as the sister taxon (PP = 0.94) of the clade (PP = 0.94) formed by I. elegans-C. modesta (PP = 0.51) and C. mentalis-S. ridleyℝ (PP = 1.0). An alternative topology demonstrating a paraphyletic Heterodactylini is only weakly supported (PP = 0.63). Based on the MP topology we discuss tentative scenarios for the evolution of Heterodactylini.
dc.format.extent1649928 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5856
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates, no. 3565en_US
dc.subject.lccQL1 .A436 no.3565, 2007en_US
dc.subject.lcshAlexandresaurusen_US
dc.subject.lcshAlexandresaurus camacanen_US
dc.subject.lcshAcratosauraen_US
dc.subject.lcshTeiidaeen_US
dc.subject.lcshHeterodactylini -- Phylogeny.en_US
dc.subject.lcshLizards -- Brazil -- Bahia (State)en_US
dc.subject.lcshReptiles -- Brazil -- Bahia (State)en_US
dc.titleA new genus of microteiid lizard from the Atlantic forests of State of Bahia, Brazil, with a new generic name for Colobosaura mentalis, and a discussion of relationships among the Heterodactylini (Squamata, Gymnophthalmidae) ; American Museum novitates, no. 3565en_US
dc.title.alternativeMicroteiid lizarden_US
dc.typetexten_US

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