Hopliancistrus xikrin de Oliveira, Zuanon, Rapp Py-Daniel, Birindelli & Sousa, 2021: 25, fig. 13.

Paratypes: 1 lot, 4 specimens —NUP 22723, 4, 78.5–115.9 mm SL: Brazil, Pará, Altamira, rio Novo, between RESEX do rio Iriri and Estação Ecológica da Terra do Meio, 4°32’47.6”S, 53°40’21.5”W, A. Gonçalves, D. Silva and fishermen Ney, Toninho, Sergio and Fábio, 1 Feb 2016 .