Tuesday, November 15, 2016

[Herpetology • 2009] Brasilotyphlus guarantanus • A Second Species of Brasilotyphlus (Gymnophiona: Caeciliidae) from Brazilian Amazonia

 Brasilotyphlus guarantanus 
 Maciel, Mott & Hoogmoed, 2009 

Brasilotyphlus is rediagnosed in light of the discovery of a second species of the genus, Brasilotyphlus guarantanus sp. nov., in the municipality of Guarantã do Norte, state of Mato Grosso, Brazil. The new species differs from B. braziliensis mainly in annular counts, having 151–170 primaries and at most 2 secondaries (instead of 142–147 primaries and 23–36 secondaries). 

Key words: Amazonia, Brazil, Brasilotyphlus, Brasilotyphlus guarantanus sp. nov.

Diagnosis: A Brasilotyphlus with maximum known total length of 305 mm; 47–76.1 times the width at midbody. Primary folds 151–170, secondary folds 0–2. The first nuchal collar is distinct dorsally and ventrally, the second is partly fused below with the first body collar. Two paired anal papillae may be present either side of midline just anterior of the vent. A weak vertical keel is present on the terminal part of the body of most specimens (in 27 of the type specimens). Maxillary teeth may reach the level of the posterior border of the choanae or extend slightly beyond them. Dermal scales present in folds in the posterior part of the body.

Etymology: The name of the species refers to the type-locality, Guarantã do Norte, state of Mato Grosso, Brazil.

 Adriano Oliveira Maciel, Tamí Mott and Marinus Steven Hoogmoed. 2009. A Second Species of Brasilotyphlus (Amphibia: Gymnophiona: Caeciliidae) from Brazilian Amazonia. Zootaxa. 2226; 19-27.

Resumo: A diagnose do gênero Brasilotyphlus é redefinida a partir da descoberta de uma segunda espécie desse gênero, B. guarantanus sp. nov., no município de Guarantã do Norte, estado de Mato Grosso, Brasil. A nova espécie difere de B. braziliensis principalmente nas contagens de anéis corporais, possuindo entre 151 e 170 primários e no máximo dois secundários, enquanto B. braziliensis tem de 142 a 147 primários e 23 a 36 secundários

1 comment:

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