Friday, March 3, 2023

[Herpetology • 2023] Vitreorana assuhAn Elusive Giant: A New Species of Vitreorana Guayasamin et al., 2009 (Anura: Centrolenidae) from the northern Atlantic Forest with An Osteological Description and Comments on Integumentary Spicules


Vitreorana assuh  
Zucchetti, Rojas-Padilla, Dias, Solé, Orrico & Castroviejo-Fisher, 2023

 
Abstract
We describe a new species of Vitreorana from the Atlantic Forest of southern Bahia state, in north-eastern Brazil. Vitreorana assuh sp. nov. is by far the largest species of the genus (snout-to-vent length [SVL] = 30.9 mm and 34.1 mm in one male and female, respectively; maximum SVL recorded for all other species = 28.0 mm). The new species is morphologically most similar to V. franciscana, from the Cerrado biome in Brazil. Besides its large size, the new species has, among other diagnostic characters, the presence of vomerine teeth and the occurrence of enameled iridophores in the pericardium, hepatic and urinary bladder peritonea. Furthermore, we describe and compare the complete mineralized skeleton of the new species and V. uranoscopa, and describe and discuss the variation of integumentary spicules in all species of the genus and their relevance to Vitreorana systematics.

Key words: Brazil, Centroleninae, glassfrogs, morphology, osteology, taxonomy

Vitreorana assuh sp. nov.
Dorsolateral view of the holotype (upper photo; MZUESC 18530, adult male) in life.
Dorsolateral and ventral view (middle and lower photos, respectively) of the paratopotype (MZUESC 21044, adult female) in life.
Photo of holotype by I.R. Dias and of paratopotype by O. Rojas-Padilla.

Vitreorana assuh sp. nov. 

Etymology. The specific epithet assuh comes from the word açu of the Tupi linguistic trunk, which is an adjective, meaning “large” or “elongated”. Tupi was the main language used by native people on the Atlantic Forest coast before European contact. By naming this species using a Tupi word, we want to pay homage to these residents of the Atlantic Forest and their contribution to shaping current Brazilian culture.


Victor M. Zucchetti, Omar Rojas-Padilla, Iuri R. Dias, Mirco Solé, Victor G. D. Orrico and Santiago Castroviejo-Fisher. 2023. An Elusive Giant: A New Species of Vitreorana Guayasamin et al., 2009 (Anura: Centrolenidae) from the northern Atlantic Forest with An Osteological Description and Comments on Integumentary Spicules. Zootaxa. 5249(3); 301-334. DOI: 10.11646/zootaxa.5249.3.1