A New Species of Hylodes (Anura: Hylodidae) from the Brazilian Atlantic Forest

We describe a new species of Torrent Frog, genus Hylodes, from southern and southeastern Brazil. The new species is assigned to the Hylodes nasus species group and is characterized by large size, robust body, distinctly granular dorsolateral surfaces, absence of light dorsolateral stripes, moderate-sized fringe on the outer margin of toe V, and distinct advertisement call with long note duration. The new species is morphologically similar to Hylodes asper but is readily separated from that species by its distinct vocalization and by the shorter fringe on the outer side of toe V. Description of advertisement call and behavioral notes are provided.

Figure 1

Holotype of Hylodes cardosoi, MNRJ 29751 (SVL 41.5 mm) in ventral (A) and dorsal (B) views.

Figure 2

Holotype of Hylodes cardosoi, MNRJ 29751. Lateral (A) and dorsal (B) views of head; ventral views of foot (C) and hand (D). Scale = 5 mm.

Figure 3

Hylodes cardosoi female in life (MNRJ 39250).

Figure 4

Advertisement call of Hylodes cardosoi. Power spectrum (A) of the last note. Oscillogram (B) and spectrogram (C) of a call with four notes. Vocalization recorded on 19 March 2002; air temperature 25.2°C; MNRJ 29755.

Figure 5

Distribution of members of the Hylodes nasus species group: H. asper (squares), H. dactylocinus (triangles), H. nasus (star), and H. cardosoi (circles). Contour shading represents 400 m intervals.

Contributor Notes

Associate Editor: D. Kizirian.

¹ Universidade do Oeste de Santa Catarina, Área de Ciências Biológicas e da Saúde, Avenida Getúlio Vargas 2125, Flor da Serra, 89600-00, Joaçaba, SC, Braziland Programa de Pós-Graduação em Zoologia, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil; E-mail: rodrigolingnau@yahoo.com.br.

² Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, 20940-040 Rio de Janeiro, RJ, Brazil; E-mail: (CC) clarissa.canedo@gmail.com; and (JPP) pombal@acd.ufrj.br. Send reprint requests to JPP.

Received: 21 Mar 2007

Accepted: 03 Dec 2007