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Sturaro M.J.,Laboratorio Of Herpetologia | Sturaro M.J.,Federal University of Para | Peloso P.L.V.,The New School
Papeis Avulsos de Zoologia | Year: 2014

A new species of the hylid genus Scinax is described and illustrated. The new taxon was found in the Amazonian rainforest of northern Brazil, municipalities of Maués and Careiro da Várzea, state of Amazonas. The new species is characterized by its moderate size (male mean snout-vent length 36.3 mm); body robust; large, orange, black-bordered axillary and inguinal spots; and bilobate vocal sac. This new species was found in primary and secondary forest on branches of shrubs or trees in, or next to, permanent ponds and flooded areas.

Sturaro M.J.,Federal University of Alfenas | Sturaro M.J.,Laboratorio Of Herpetologia | da Silva V.X.,Federal University of Alfenas
Journal of Natural History | Year: 2010

The natural history of the lizard Enyalius perditus was studied from August 2005 to July 2006, at Parque Estadual Nova Baden, in the municipality of Lambari, State of Minas Gerais, south-eastern Brazil. We found that E. perditus may be considered a semi-arboreal species, like other species in the genus, sleeping on vegetation (slim branches or large leaves) at night, possibly to minimize predation. Females with enlarged follicles or oviducal eggs were found from November to January and juveniles recruited at the end of the dry season and beginning of the rainy season, in October. The diet of this lizard is composed mainly of Lepidoptera larvae, Araneae and Formicidae. Females were larger than males, and juvenile coloration is similar to that of adult females. © 2010 Taylor & Francis.

Feria-Ortiz M.,National Autonomous University of Mexico | Garcia-Vazquez U.O.,Laboratorio Of Herpetologia
Zootaxa | Year: 2012

We describe a new species of lizard of the genus Plestiodon from the Sierra Madre del Sur of Guerrero, Mexico. Plestiodon nietoi sp. nov. shares a characteristic with all members of the P. brevirostris group in that the scale that medially borders the postgenial is wider than long. This species is most similar to P. brevirostris and P. indubitus from which it differs by having the following combination of characters: large adult size, interparietal enclosed posteriorly by parietals, and a pale lateral line on the neck. © 2012 Magnolia Press.

Passos P.,Federal University of Rio de Janeiro | Fernandes R.,Federal University of Rio de Janeiro | Bernils R.S.,Federal University of Rio de Janeiro | De Moura-Leite J.C.,Laboratorio Of Herpetologia | De Moura-Leite J.C.,Pontifical Catholic University of Parana
Zootaxa | Year: 2010

Dipsadine snakes of the genus Atractus are endemic to the Neotropical region, occurring from Panama to Argentina. Currently, the taxonomic status of most species of the genus is unclear and previous attempts of taxonomic revisions have been local in scale. In this paper we evaluate the taxonomic status of the Brazilian Atlantic Forest species of Atrac- tus based on meristic, morphometric, maxillary dentition, and hemipenis characters. Quantitative and qualitative analyses suggest the recognition of one new species (A. caete sp. nov.) from the state of Alagoas, another (A. francoi sp. nov.) from the mountainous regions of the states of Rio de Janeiro and Säo Paulo, and the synonymy of A. kangueryensis with A. thalesdelemai. Specimens previously assigned to A. taeniatus in Argentina and Brazil are here considered A. para- guayensis. A key to the Atlantic Forest Atractus is provided and three new species groups are proposed for some cis- Andean Atractus, mainly on the basis of hemipenial morphology: the A. emmeli, A. maculatus, and A. pantostictus species groups. Copyright © 2010 Magnolia Press.

Prudente A.L.C.,Laboratorio Of Herpetologia | Passos P.,Federal University of Rio de Janeiro | Passos P.,Instituto Butantan
Copeia | Year: 2010

A new species of Atractus, previously reported as a disjunct population of A. zidoki south of the Amazon River, differs from all congeners in having an undivided sulcus spermaticus. Herein, we restrict the concept of A. zidoki to populations north of the Amazon River, provide a detailed description of its everted hemipenis, and describe a new species to accommodate the population occurring to the south of the Amazon River. Additionally, we briefly discuss intraspecific variation and the systematic value of the hemipenis structure in snakes, mainly with respect to the genus Atractus. © 2010 by the American Society of Ichthyologists and Herpetologists.

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