“…being the sixth valid species recorded for the region. Of those species, one was recently recorded for Colombia (R. daraha byBogotá-Gregory et al, 2016), and another was recently described (R. jurupari, by Londoño-Burbano & Urbano-Bonilla, 2018), summing up the species described here, that is three species recorded in less than 10 years for the same basin (i.e., Vaupés River). Furthermore, R. lanceolata is a species currently recognized as widespread along the Amazonas River basin (including the upper, middle, and lower portions of the basin, in localities of Colombia, Bolivia, Brazil, and Peru); however, from this wide distribution, a cryptic component could be present in the species.…”