machadoi, Hypoptopoma Aquino [A. E.] & Schaefer [S. A.] 2010:89, Fig. 44 [Bulletin of the American Museum of Natural History No. 336; ref. 30875] Swamps on south bank of Río Apure, ca. 3 kilometers west of Fisheries Station, San Fernando de Apure, Venezuela. Holotype: MBUCV-CV-35362. Paratypes: AMNH 77794 (23). Plus non-type material. •Valid as Hypoptopoma machadoi Aquino & Schaefer 2010 -- (DoNascimiento et al. 2017:76 [ref. 35633], Urbano-Bonilla et al. 2018:75 [ref. 35773], Delapieve et al. 2018:22 [ref. 35713], Cortés Hernández et al. 2023:457 [ref. 40760]). Current status: Valid as Hypoptopoma machadoi Aquino & Schaefer 2010. Loricariidae: Hypoptopomatinae. Distribution: South America: Rio Orinoco basin (Venezuela) and Rio Meta drainage (Colombia). Habitat: freshwater.