marginatus, Chaetostomus Regan [C. T.] 1904:249, Pl. 13 (fig. 1) [Transactions of the Zoological Society of London v. 17 (pt 3, no. 1); ref. 3621] Salidero, northwestern Ecuador [= Near Bulún [Pulún], about 1°05'N, 78°40'W, Rio Bogota, Esmeraldas, Ecuador, elevation 50-110 m]. Syntypes: BMNH 1901.8.3/27-28 (2), ?1902.5.27.44 (1). Type catalog: Ferraris 2007:229 [ref. 29155]. Original genus is correctly Chaetostoma. •Valid as Chaetostoma marginatus Regan 1904 -- (Ovchynnyk 1967:39 [ref. 37559]). •Valid as Chaetostoma marginatum Regan 1904 -- (Isbrücker 1980:62 [ref. 2303], Burgess 1989:436 [ref. 12860], Isbrücker 2001:26 [ref. 25653], Isbrücker 2002:13 [ref. 27178], Fisch-Muller in Reis et al. 2003:381 [ref. 27061], Ferraris 2007:229 [ref. 29155], Barriga Salazar 2014:113 [ref. 35745], Jiménez-Prado et al. 2015:218 [ref. 34894], Lujan et al. 2015:666 [ref. 33975], DoNascimiento et al. 2017:79 [ref. 35633]). Current status: Valid as Chaetostoma marginatum Regan 1904. Loricariidae: Hypostominae. Distribution: South America: Colombia and Ecuador. Habitat: freshwater.