hystrix, Hemipsilichthys Pereira [E. H. L.] & Reis [R. E.] 2002:134, Fig. 22 [Ichthyological Exploration of Freshwaters v. 13 (no. 2); ref. 26071] Creek tributary of rio dos Touros, on road from Silveira to Rondinha, 28°39'18"S, 50°18'25"W, Bom Jesus, Rio Grande do Sul, Brazil. Holotype: MCP 19779. Paratypes: MCP 14348 (68). Plus non-type material. Type catalog: Ferraris 2007:280 [ref. 29155]. •Valid as Hemipsilichthys hystrix Pereira & Reis 2002 -- (Pereira et al. 2003:2 [ref. 27068], Weber in Reis et al. 2003:354 [ref. 27061]). •Valid as Pareiorhaphis hystrix (Pereira & Reis 2002) -- (Periera 2005:272 [ref. 28273], Ferraris 2007:280 [ref. 29155], Pereira et al. 2012:539 [ref. 32218], Bertaco et al. 2016:419 [ref. 34561], Pereira & Reis 2017:75 [ref. 35307], Fagundes et al. 2020:5 [ref. 37754], Pereira & Reis 2022:12 [ref. 39732]). Current status: Valid as Pareiorhaphis hystrix (Pereira & Reis 2002). Loricariidae: Hypoptopomatinae. Distribution: South America: upper Uruguai and Taquari River basins (Brazil). Habitat: freshwater.