nocturnus, Panaque Schaefer [S. A.] & Stewart [D. J.] 1993:330, Fig. 15 [Ichthyological Exploration of Freshwaters v. 4 (no. 4); ref. 21282] Río Santiago near la Poza, Río Marañón basin, 4°01'24"S, 77°45'06"W, Depart. Amazonas, Peru. Holotype: LACM 41729-51. Paratypes: FMNH 96955 (3, 2 c&s), 97599-600 (1, 2); LACM 41723-5 (4), 41729-35 (4); MEPN 1560 (1), 3020 (3); USNM 167907 (4), 177209 (1). Type catalog: Ferraris 2007:277 [ref. 29155]. •Valid as Panaque nocturnus Schaefer & Stewart 1993 -- (Chang & Ortega 1995:4 [ref. 24302], Burgess & Finley 1996:169 [ref. 22901], Chockley & Armbruster 2002:83 [ref. 26069], Fisch-Muller in Reis et al. 2003:391 [ref. 27061], Barriga Salazar 2014:113 [ref. 35745]). •Valid as Panaqolus nocturnus (Schaefer & Stewart 1993) -- (Isbrücker et al. 2001:21 [ref. 25649], Isbrücker 2001:30 [ref. 25653], Isbrücker 2002:24 [ref. 27178], Ferraris 2007:277 [ref. 29155], Lujan et al. 2013:192 [ref. 32784], Cramer 2014:69 [ref. 33229], Cramer & Rapp Py-Daniel 2015:469 [ref. 33945], Cramer & Sousa 2016:16 [ref. 34885], Tan et al. 2016:[19] [ref. 34532], Lujan et al. 2017:333 [10] [ref. 35031] subgenus Panafilus Lujan et al. 2017, Meza-Vargas et al. 2021:26 [ref. 39298], Provenzano et al. 2024:124 [ref. 41174]). Current status: Valid as Panaqolus nocturnus (Schaefer & Stewart 1993). Loricariidae: Hypostominae. Distribution: South America: upper Napo River drainage, western Amazon River basin (Ecuador and Peru). Habitat: freshwater.