Cercosaura oshaughnessyi (Boulenger, 1885)

Distribution: Western Amazonia in Brazil, Peru, Ecuador, and Colombia (Ribeiro-Júnior & Amaral 2017). In Colombia it is mainly distributed within the Amazonia region, with some records in southern Orinoquia (Fig. 4C).

Similar species: Cercosaura oshaughnessyi is distinguished from its congeners in having 11–17 longitudinal rows of enlarged hexagonal dorsal scales forming transversal lines, and a divided frontonasal (dorsal hexagonal scales arranged in transverse and oblique series in C. hypnoides, eight longitudinal rows in the C. ocellata group, and a single frontonasal in the C. ocellata group and C. hypnoides); and scales on flanks distinctly smaller than dorsals, 31–45 scales around midbody, presence of preanal pores, and two ventral scales separated by the femoral pores (scales on flanks moderately smaller than dorsals, 27–35 scales around midbody, absence of preanal pores, and four ventral scales separated by the femoral pores in C. argulus). See Ávila-Pires (1995), Ribeiro-Júnior & Amaral (2017), and Sturaro et al. (2018) for a detailed description.

Remarks: See C. argulus remarks.