The release call of Hypsiboas goianus (B. Lutz, 1968) (Anura: Hylidae) from Central Brazil

in anuran communication processes, and it is the stimulation by different vocalizations that is key to its function (Wells, 2007). Release calls are a type of vocalization most frequently emitted by male frogs, usually when amplected by conspecific males, and consisting of a series of simple, repeated notes (Wells, 2007). The Hypsiboas polytaenius clade is composed of 12 species, including H. beckeri (Caramaschi and Cruz, 2004), H. botumirim (Caramaschi et al., 2009), H. buriti (Caramaschi and Cruz, 1999), H. cipoensis (B. Lutz, 1968), H. goianus (B. Lutz, 1968), H. jaguariaivensis (Caramaschi et al., 2010), H. latistriatus (Caramaschi and Cruz, 2004), H. leptolineatus (Braun and Braun, 1977), H. phaeopleura (Caramaschi and Cruz, 2000), H. polytaenius (Cope, 1870), H. stenocephalus (Caramaschi and Cruz, 1999), and H. bandeirantes (Caramaschi and Cruz, 2013), that are widely distributed in Brazil (Caramaschi et al., 2010; Caramaschi and Cruz, 2013). However, for none of the species of the H. polytaenius clade has the release call been described. Hypsiboas goianus occurs in the Brazilian states of Goias and Minas Gerais and in the Distrito Federal (Frost, 2014). Herein, we describe for the first time the release call of H. goianus from the Cerrado biome. Hypsiboas goianus males (Fig. 1) were observed in the Floresta Nacional de Silvânia (Flona; 16o39’32’’ S, 48o36’29’’ W, elevation ca. 900 m), Silvânia municipality, Goias state. We recorded vocalizations emitted by amplexed males of H. goianus using a Marantz PMD 660 digital recorder and a Sennheiser ME66 microphone. Recordings were edited at a sampling frequency of 22 kHz and 16 bit with Sound Forge Audio Studio 10 software, and analyzed with Cool Edit 96 and Avisoft-Sonagraph Light software. The description of the call follows Gerhardt (1998). Note duration (s), number of pulses per note, pulse duration (s), dominant frequency (Hz), and repetition rate (calls/ min) were measured. We captured all individuals and measured their snout-vent length (SVL) to the nearest 0.1 mm with a caliper and their mass to the nearest 0.1 g with digital scales. Data provided for calls include mean ± standard deviation and ranges. Frequency information was obtained through Fast Fourier Transformation Herpetology Notes, volume 7: 215-217 (2014) (published online on 16 April 2014)