melanzonus, Creagrutus Eigenmann [C. H.] 1909:30 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Crab Falls, Essequibo River, Guyana. Holotype: FMNH 52705 [ex CM 1067]. Paratypes: (5, CM and IU) CAS 30421-22 [ex IU 11753-54] (1, 2), FMNH 51706-07 (1, 1). Type catalog: Henn 1928:63 [ref. 12305], Ibarra & Stewart 1987:28 [ref. 12367]. •Valid as Creagrutus melanzonus Eigenmann 1909 -- (Planquette et al. 1996:324 [ref. 22818], Vari & Harold 2001:146 [ref. 25842], Vari & Harold in Reis et al. 2003:124 [ref. 27061], Mirande et al. 2013:763 [ref. 33366], Thomaz et al. 2015:Add. 5 [ref. 33893], see DoNascimiento et al. 2017:[12] [ref. 35679], Albornoz-Garzón et al. 2018:352 [ref. 36150], Borstein et al. 2022:16 [ref. 39507], Taphorn et al. 2022:14 [ref. 41297]). Current status: Valid as Creagrutus melanzonus Eigenmann 1909. Stevardiidae: Creagrutinae. Distribution: South America: Cuyani River of eastern Venezuela to Sinnamary River basin French Guiana (French Guiana, Guyana, Suriname and Venezuela). Habitat: freshwater.