Ptychoglossus brevifrontalis Boulenger, 1912

Type-locality. El Topo, Rio Pastaza, E. Ecuador, 4,200 feet.

Pertinent taxonomic references. Boulenger (1912), Loveridge (1929), Dunn (1944), Hoogmoed (1973), Dixon & Soini (1975), Duellman (1978), Harris (1994), Ávila-Pires (1995), Pellegrino et al. (2001), Castoe et al. (2004), Peloso & Ávila-Pires (2010), Goicoechea et al. (2016).

Distribution and habitat. Ptychoglossus brevifrontalis is widespread in, Amazonia, occurring in Brazil, Colombia, Ecuador, and Peru (Fig. 2). In Colombia, it also occurs in forested areas adjacent to the Llanos.

Hoogmoed (1973) also reported it from Suriname, Rivas et al. (2012) from Venezuela, and Harris (1994) from Bolivia. In Brazil, it is known from the states of Amapá, Pará, Amazonas, Acre, and Rondônia. Ptychoglossus brevifrontalis is terrestrial and diurnal, inhabits primary terra firme forest (Gardner et al. 2006; Ávila-Pires et al. 2010; Ribeiro-Júnior et al. 2011), where it is found on the ground, among leaf litter (usually in areas with dense and deep leaf litter—Dixon & Soini 1975, 1986), under rocks and rotten tree trunks (Duellman 1978; Ávila-Pires 1995; Vitt et al. 2008).