primus, Yaluwak Lujan [N. K.], Armbruster [J. W.] & Werneke [D. C.] in Lujan, Armbruster, Werneke, Teixeira & Lovejoy 2019:16, Fig. 8 [Zoological Journal of the Linnean Society v. 188 (no. 4) [2020]; ref. 37035] Sukwabi Creek, East Fork, downstream of Wotowanda Falls, Region 8 (Potaro-Siparuni), Guyana, 5.08867°, -59.96952°, elevation 634 meters. Holotype: CSBD F1722 [ex AUM 67193]. Paratype: AUM 67193 (1). •Valid as Yaluwak primus Lujan, Armbruster & Werneke 2019 -- (Taphorn et al. 2022:54 [ref. 41297]). Current status: Valid as Yaluwak primus Lujan, Armbruster & Werneke 2019. Loricariidae: Hypostominae. Distribution: South America: Ireng River drainage (Guyana) endemic. Habitat: freshwater.