This monotypic genus, despite criticisms from past authors, was retained by Grant et al. (2006) for the single species which was hypothesized to be sister to all other dendrobatines excluding Phyllobates. The phylogenetic placement of this genus is still controversial. Twomey & Brown (2008) and Santos et al. (2009) found it to be sister to Adelphobates, whereas Twomey & Brown et al. (2013) found it to be sister to a clade containing Adelphobates, Dendrobates, and Oophaga. This species is restricted to a single tepui (Cerro de Yapacana) in Venezuela.