megistus, Hoplomyzon Orcés V. [G.] 1961:3, Figs. 1-2 [Ciencia y Naturaleza (Quito) v. 4 (no. 1); ref. 6358] Small river off of the Río Chicherota, Río Bobonaza system, Province Pastaza, eastern Ecuador. Holotype: Author's coll. 4305 (whereabouts unknown). Paratypes: Univ. Cent. Ecuador 270 (1). Type catalog: Ferraris 2007:60 [ref. 29155]. •Valid as Hoplomyzon megistus Orcés V. 1961 -- (Ovchynnyk 1967:36 [ref. 37559]). •Valid as Ernstichthys megistus (Orcés V. 1961) -- (Burgess 1989:304 [ref. 12860], Friel in Reis et al. 2003:264 [ref. 27061], Ferraris 2007:60 [ref. 29155], Barriga Salazar 2014:110 [ref. 35745]). Current status: Valid as Ernstichthys megistus (Orcés V. 1961). Aspredinidae: Hoplomyzontinae. Distribution: South America: Bobonaza and Marañón River basins (Ecuador and Peru). Habitat: freshwater.