platycephalus, Chaetostomus Boulenger [G. A.] 1898:12 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 13 (no. 329); ref. 14677] Río Bomboiza, upper Amazon River basin, eastern Ecuador. Syntypes: (2) BMNH 1898.11.4.42 (1), MZUT 1551 (1). Type catalog: Tortonese 1940:137 [ref. 21559], Ferraris 2007:232 [ref. 29155]. Original genus is correctly Chaetostoma. •Valid as Hemiancistrus platycephalus (Boulenger 1898) -- (Ovchynnyk 1967:39 [ref. 37559], Isbrücker 1980:51 [ref. 2303], Burgess 1989:434 [ref. 12860]). •Valid as Cordylancistrus platycephalus (Boulenger 1898) -- (see Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:26 [ref. 25653], Isbrücker 2002:15 [ref. 27178], Fisch-Muller in Reis et al. 2003:383 [ref. 27061], Provenzano & Milani 2006:36 [ref. 28579], Ferraris 2007:231 [ref. 29155], Tan & Armbruster 2012:52 [ref. 31842], Barriga Salazar 2014:113 [ref. 35745] as platycenphalus, Armbruster et al. 2015:99 [ref. 33670]). •Valid as Andeancistrus platycephalus (Boulenger 1898) -- (Lujan et al. 2015:655 [ref. 33963], Lujan et al. 2015:666 [ref. 33975], Provenzano & Villa-Navarro 2017:528 [ref. 35473], Provenzano et al. 2017:264 [ref. 35613]). Current status: Valid as Andeancistrus platycephalus (Boulenger 1898). Loricariidae: Hypostominae. Distribution: South America: Santiago River basin (Ecuador). Habitat: freshwater.