Cercosaura parkeri (Ruibal, 1952)

Type-locality. Buenavista, Departamento de Santa Cruz, Bolivia.

Pertinent references. Ruibal (1952), Peters & Donoso-Barros (1970), Nascimento et al. (1988), Ávila-Pires (1995), Tedesco (1998), Tedesco & Cei (1999), Doan (2003), Barreto et al. (2012), Echevarría et al. (2015), Torres- Carvajal et al. (2015), Goicoechea et al. (2016).

Distribution and habitat. Cercosaura parkeri occurs in Brazil, Bolivia, and Argentina, in the Chaco, western portion of the Brazilian Cerrado, and southern Amazonia (Fig. 9). In Amazonia its distribution is associated with the river systems of Beni, Mamoré, Guaporé, and Madeira. Barreto et al. (2012) also reported it from Peru. In Brazil, it is known from the states of Rondônia and Mato Grosso. Cercosaura parkeri is terrestrial and diurnal, inhabits semideciduous forest, tropical humid forest, seasonally flooded open areas, dense cerrado, and open grassland areas, where it is mainly found on the ground (Barreto et al. 2012).