Güller & Zelaya (2019) write: 'Pimenta et al. (2009) included F. buijisei [sic] (Jong & Coomans, 1988) in the synonymy of F. bushiana. However, the general shell outline of these two species, even when considering similar-sized specimens, is quite different. Consequently, this synonymy needs revision. Fargoa pyramidalis is not conspecific with the holotype of F. buijsei (figured by Pimenta et al., 2009: fig. 45) either, from which it differs strikingly by being much less elongated.' According to WoRMS, Fargoa buijsei is a taxon inquirendum.