Tuesday, June 26, 2018

[Herpetology • 2018] Oreobates antrum • A New Cryptic Species of Oreobates (Anura: Craugastoridae) from the Seasonally Dry Tropical Forest of central Brazil


Oreobates antrum 
Vaz-Silva, Maciel, Andrade & Amaro, 2018


Abstract
A new species of Oreobates Jiménez de la Espada, 1872 is described from the seasonally dry tropical forest associated to rocky outcrops of the northeastern Goiás State, Central Brazil. Oreobates antrum sp. nov. is diagnosable by the combination of morphological characters (e.g. small size, dorsal and ventral skin texture smooth to finely shagreened, and broadly enlarged truncate discs on Fingers III and IV), call attributes (composed of a single note and no harmonics with dominant frequency ranged 2070 Hz to 3273 Hz), and supported by molecular evidence (phylogenetic position and genetic divergence) with high degree of differentiation among other Oreobates species (divergences of 4.0–20.6% for 12S, 7.0–14% for 16S, 0.7–4.0% for RAG-1, and 1.1–8.0% for TYR). The new species was recovered as the sister of Oreobates remotus.

Keywords: Amphibia, Brachycephaloidea; Cerrado biome; Integrative taxonomy; Terrarana


reddish-brown Oreobates antrum sp. n. from the type locality at São Domingos, State of Goiás. 

FIGURE 3. Color patterns in live specimens of Oreobates antrum sp. n. from the type locality at São Domingos, State of Goiás.
Absence of dorsolateral bar (C), dorsolateral longitudinal stripes from post-ocular to sacral regions (D), diagonal labial bars slightly faded (E), light brown blotches between the eyes and nostrils (F).
Photos by D.L. Santos, S.P. Andrade and E.P. Victor-Junior.

Oreobates antrum sp. nov.

Etymology. The specific name antrum is a Latin adjective meaning “hollow, cave or cavity”. This name refers to the habitats where this species is found, caves of the calcareous rocky outcrops of the Cerrado associated to dry forests.


Wilian Vaz-Silva, Natan Medeiros Maciel, Sheila Pereira de Andrade and Renata Cecília Amaro. 2018. A New Cryptic Species of Oreobates (Anura: Craugastoridae) from the Seasonally Dry Tropical Forest of central Brazil. Zootaxa. 4441(1); 89–108. DOI:  10.11646/zootaxa.4441.1.5

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