A New Genus of Microteiid Lizard from the Caparao Mountains, Southeastern Brazil, with a Discussion of Relationships among Gymnophthalminae (Squamata)

A New Genus of Microteiid Lizard from the Caparao Mountains, Southeastern Brazil, with a Discussion of Relationships among Gymnophthalminae (Squamata)

Author Rodrigues, Miguel Trefaut Google Scholar
Casimiro, Jose Google Scholar
Pavan, Dante Google Scholar
Curcio, Felipe Franco Google Scholar
Verdade, Vanessa Kruth Google Scholar
Pellegrino, Katia Cristina Machado Autor UNIFESP Google Scholar
Institution Amer Museum Nat Hist
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract A new genus and species of microteiid lizard is described based on a series of specimens obtained at Parque Nacional do Caparao (20 degrees 28'S, 41 degrees 49'W), southeastern Brazil, along the division line between the States of Minas Gerais and Espirito Santo. The new lizard occurs in isolated high-altitude, open, rocky habitats above the altitudinal lit-nits of the Atlantic forest. It is characterized by the presence of prefrontals, frontoparietals, parietals, interparietal, and occipital scales; ear opening and eyelid distinct; three pairs of genials; absence of collar; lanceolate and mucronate dorsal scales; six regular transverse and longitudinal series of smooth ventrals that are longer than wide, with the lateral ones narrower. Maximum parsimony (MP) and partitioned Bayesian (PBA) phylogenetic analyses based on morphological and molecular characters with all known genera of Gymnophthalminae (except for Scriptosaura) Plus Rhachisaurus recovered this new lizard in a clade having Colobodactylus and Heterodactylus as its closest relatives. Both analyses recovered the monophyly of Gymnophthalminae and Gymnophthalmini. The monophyly of the Heterodactylini received moderate support in MP analyses but was not recovered in PBA. To eliminate classification controversy between these results, the present concept of Heterodactylini is restricted to accommodate the new genus, Colobodactylus and Heterodactylus, and a new tribe Iphisiini is proposed to allocate Alexandresaurus, Iphisa, Colobosaura, Acratosaura, and Stenolepis. Current phylogenetic knowledge of Gymnophthalminae suggests that fossoriality and increase of body elongation arose as adaptive responses to avoid extreme surface temperatures, either cold or hot, depending on circumstances.
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
IBAMA
Grant number IBAMA: 094/2004
IBAMA: 185/2005
IBAMA: 238/2006
Date 2009-11-30
Published in American Museum Novitates. New York: Amer Museum Natural History, n. 3673, p. 1-27, 2009.
ISSN 0003-0082 (Sherpa/Romeo, impact factor)
Publisher Amer Museum Natural History
Extent 1-27
Origin http://digitallibrary.amnh.org/handle/2246/6031
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000272389200001
URI http://repositorio.unifesp.br/11600/42485

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