A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)

A new species of the lizard genus Stenocercus Duméril & Bibron, 1837 is described based on six specimens from Serra da Canastra, Minas Gerais, southeastern Brazil. Similar to S. tricristatus (Duméril, 1851), S. dumerilii (Steindachner, 1867), S. quinarius Nogueira & Rodrigues...

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Main Authors: Teresa C. Avila-Pires, Cristiano de C. Nogueira, Marcio Martins
Format: Article
Language:English
Published: Sociedade Brasileira de Zoologia 2019-05-01
Series:Zoologia (Curitiba)
Online Access:https://zoologia.pensoft.net/article/22909/download/pdf/
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author Teresa C. Avila-Pires
Cristiano de C. Nogueira
Marcio Martins
author_facet Teresa C. Avila-Pires
Cristiano de C. Nogueira
Marcio Martins
author_sort Teresa C. Avila-Pires
collection DOAJ
description A new species of the lizard genus Stenocercus Duméril & Bibron, 1837 is described based on six specimens from Serra da Canastra, Minas Gerais, southeastern Brazil. Similar to S. tricristatus (Duméril, 1851), S. dumerilii (Steindachner, 1867), S. quinarius Nogueira & Rodrigues, 2006, and S. squarrosus Nogueira & Rodrigues, 2006, the new species has a pyramidal head and an enlarged, dorsally projected post-supraciliary scale, like a small horn. It is most similar to S. tricristatus, from which it differs in having a more elongated head in ventral view; a larger number of scales around midbody; a distinctly enlarged, smooth preauricular scale; and probably a larger body size. Moreover, the new species has distinctly keeled scales, with phylloid and mucronate dorsals; no enlarged supraoculars; no neck folds; a vertebral, and a pair of dorsolateral and (weak) lateral crests. A redescription of S. tricristatus is presented for comparison with the new species.
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spelling doaj.art-7b4d6fe4851a4ae68246834f2f860e5e2023-01-03T07:13:31ZengSociedade Brasileira de ZoologiaZoologia (Curitiba)1984-46892019-05-013611610.3897/zoologia.36.e2290922909A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)Teresa C. Avila-Pires0Cristiano de C. Nogueira1Marcio Martins2Museu Paraense Emilio GoeldiUniversidade de São PauloUniversidade de São PauloA new species of the lizard genus Stenocercus Duméril & Bibron, 1837 is described based on six specimens from Serra da Canastra, Minas Gerais, southeastern Brazil. Similar to S. tricristatus (Duméril, 1851), S. dumerilii (Steindachner, 1867), S. quinarius Nogueira & Rodrigues, 2006, and S. squarrosus Nogueira & Rodrigues, 2006, the new species has a pyramidal head and an enlarged, dorsally projected post-supraciliary scale, like a small horn. It is most similar to S. tricristatus, from which it differs in having a more elongated head in ventral view; a larger number of scales around midbody; a distinctly enlarged, smooth preauricular scale; and probably a larger body size. Moreover, the new species has distinctly keeled scales, with phylloid and mucronate dorsals; no enlarged supraoculars; no neck folds; a vertebral, and a pair of dorsolateral and (weak) lateral crests. A redescription of S. tricristatus is presented for comparison with the new species.https://zoologia.pensoft.net/article/22909/download/pdf/
spellingShingle Teresa C. Avila-Pires
Cristiano de C. Nogueira
Marcio Martins
A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)
Zoologia (Curitiba)
title A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)
title_full A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)
title_fullStr A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)
title_full_unstemmed A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)
title_short A new ‘horned' Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)
title_sort new horned stenocercus from the highlands of southeastern brazil and redescription of stenocercus tricristatus reptilia tropiduridae
url https://zoologia.pensoft.net/article/22909/download/pdf/
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