Pristimantis zeuctotylus (Lynch and Hoogmoed 1977)

Holotype: RMNH 17701.

Type locality: “ West slope, Vier Gebroeders Mountain, Sipaliwini, Nickerie District, Suriname.”

Distribution: Region 4. Widely distributed in Amazonia, from southern Colombia through Venezuela, Brazil, Guyana, and Suriname to French Guiana. In Venezuela, only known from a few localities in southern Amazonas State.

Remarks: Barrio-Amorós and Molina (2006) doubted the validity of this taxon, which is distinguished from Pristimantis vilarsi only by absence of tarsal fold (present on P. vilarsi) and rounded palmar tubercle (variable in P. vilarsi). Araujo de Oliveira et al. (2017) show a maximum likelihood tree in which P. zeuctotylus from Suriname is presented as sister to P. vilarsi from Colombia; this should be confirmed with specimens from type localities of both species. In Pristimantis conspicillatus species group of Hedges et al. (2008) and Padial et al. (2014).

Selected references: Lynch and Hoogmoed (1977); Lynch (1980); Barrio-Amorós and Molina (2006).