New Species of Ischnocnema (Anura: Brachycephalidae) from the State of Minas Gerais, Southeastern Brazil, with Comments on the I. verrucosa Species Series
Field activities in several localities within the basin of the Doce River, state of Minas Gerais, Brazil, resulted in the collection of a new Ischnocnema that we assign to the I. verrucosa species series. The new species resembles I. verrucosa and I. octavioi by its possession of small digital discs, short legs, conspicuously tuberculate dorsal surfaces, a W-shaped mark between the shoulders with two large tubercles at the bases, and a red iris with a vertical black bar in life. It differs from I. verrucosa and I. octavioi by its possession of externally indistinct tympanum and tympanic annulus and visible white glandular-appearing nuptial pads in males. We also assign I. octavioi and I. penaxavantinho to the I. verrucosa species series.Abstract
Holotype of Ischnocnema surda, new species, MNRJ 57808 (SVL 25.1 mm) in dorsal (A) and ventral (B) views.
Holotype of Ischnocnema surda, new species, MNRJ 57808. Dorsal (A) and lateral (B) views of head; ventral views of hand (C) and foot (D). Scale bars = 5 mm.
Distribution of Ischnocnema surda, new species (black squares), Ischnocnema verrucosa (type locality white dotted circle; other localities gray dotted circles), and Ischnocnema octavioi (type locality black solid circle; data from literature white solid circles; other localities gray solid circles). Contour shading represents 400 m intervals.
Contributor Notes
Associate Editor: D. Kizirian.