Rhadinoloricaria is part of the Pseudohemiodon group of the tribe Loricariini in the subfamily Loricariinae.[1]Apistoloricaria and Crossoloricaria include fish that are very similar to Rhadinoloricaria, and it has been proposed that the former two genera be synonymized with the latter.
Rhadinoloricaria papillosa Jefferson L. Crispim-Rodrigues, Maxwell J. Bernt, Brandon T. Waltz, Gabriel S. C. Silva, Ricardo C. Benine, Oliveira, Raphaël Covain and Fábio F. Roxo. 2023[3]
^Jefferson L. Crispim-Rodrigues, Maxwell J. Bernt, Brandon T. Waltz, Gabriel S. C. Silva, Ricardo C. Benine, Claudio Oliveira, Raphaël Covain and Fábio F. Roxo. 2023. A New Species of Mailed Catfish of Genus Rhadinoloricaria (Siluriformes: Loricariidae: Loricariinae) from Rio Negro Basin, Brazil. Journal of Fish Biology. DOI: 10.1111/jfb.15402