trimaculineum, Chaetostoma Lujan [N. K.], Meza-Vargas [V.], Astudillo-Clavijo [V.], Barriga Salazar [R. E.] & López-Fernández [H.] 2015:694, Figs. 13-14 [Copeia 103 (no. 3); ref. 33975] Santiago River drainage, Morona-Santiago Province, confluence of the Changachangasa and Tutanangosa rivers and upstream in both, 2°35'51.18"S, 78°11'10.38"W. Holotype: MEPN 14688 [ex ROM 93894]. Paratypes: AUM, MEPN, MUSM. Plus non-type material. •Valid as Chaetostoma trimaculineum Lujan, Meza-Vargas, Astudillo-Clavijo, Barriga Salazar & López-Fernández 2015. Current status: Valid as Chaetostoma trimaculineum Lujan, Meza-Vargas, Astudillo-Clavijo, Barriga Salazar & López-Fernández 2015. Loricariidae: Hypostominae. Distribution: South America: upper Santiago and middle Marañon river drainages in eastern Ecuador and northern Peru. Habitat: freshwater.