xikrin, Hopliancistrus Oliveira [R. R. de], Zuanon [J.], Rapp Py-Daniel [L. H.], Birindelli [J. L. O.] & Sousa [L. M.] 2021:24, Figs. 5D, 7D-E, 13 [PLoS ONE v. 16 (no. 1): e0244894; ref. 38080] Rio Bacajá, ca. 2 km upstream from confluence with Rio Xingu, Rio Xingu basin, Altamira, Pará, Brazil, 3°31'10"S, 51°42'35"W. Holotype: INPA 37903. Paratypes: ANSP, INPA, LIA, MCP, MNRJ, MPEG, MZUEL, NUP, ZUEC. Type catalog: Oliveira et al. 2022:18 [ref. 39255]. •Valid as Hopliancistrus xikrin Oliveira, Zuanon, Rapp Py-Daniel, Birindelli & Sousa 2021. Current status: Valid as Hopliancistrus xikrin Oliveira, Zuanon, Rapp Py-Daniel, Birindelli & Sousa 2021. Loricariidae: Hypostominae. Distribution: South America: middle Xingu River basin (Pará, Brazil). Habitat: freshwater.