Microsternarchus bilineatus Fernández-Yépez, 1968

Ferraris, Carl J., Jr, Santana, Carlos David de & Vari, Richard P., 2017, Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types, Neotropical Ichthyology 15 (1), No. e 160067, pp. 1-8 : 1-8

Microsternarchus bilineatus Fernández-Yépez, 1968

Microsternarchus bilineatus Fernández-Yépez, 1968 : [4], unnumbered pl. 2. Type locality: Río San José, afluente del Río Guariquito al SW de Calabozo [ Venezuela]. Holotype: MACLPI 65562-B; 83 mm TL. Whereabouts of holotype unknown ( Cox Fernandes et al., 2015).

Distribution: Upper Orinoco and Negro River basins ( Fernández-Yépez, 1968).

Microsternarchus brevis Cox Fernandes, Nogueira, Williston, Alves-Gomes, 2015

Microsternarchus brevis Cox Fernandes, Nogueira, Williston, Alves-Gomes, 2015: 215 , fig. 1. Type locality: Brazil, Amazonas State , Santa Isabel do Rio Negro , Rio Negro, Igarapé Jaradi, 00°19′05”S, 65°18′31”W. Holotype: INPA 48028; 53 mm TL.

Distribution: Negro River, below São Gabriel da Cachoeira and above the mouth of the Branco River, Brazil ( Cox Fernandes et al., 2015).

PROCERUSTERNARCHUS Cox Fernandes, Nogueira, Alves-Gomes, 2014 (1 species)

Procerusternarchus Cox Fernandes, Nogueira, Alves-Gomes, 2014: 95 . Type species Procerusternarchus pixuna Cox Fernandes, Nogueira, Alves-Gomes, 2014 . Type by original designation. Gender: masculine.

Procerusternarchus pixuna Cox Fernandes, Nogueira, Alves-Gomes, 2014

Procerusternarchus pixuna Cox Fernandes, Nogueira , Alves- Gomes , 2014: 103, fig. 2. Type locality: Brazil, Amazonas , Rio Negro , São Gabriel da Cachoeira, Igarapé Ducubixi, 0°00’39.2”S, 67°15’34.7”W. Holotype: INPA 33743; 127 mm TL.

Distribution: Negro River basin, Brazil ( Cox Fernandes et al., 2014).

RACENISIA Mago-Leccia, 1994 (1 species)

Racenisia Mago-Leccia, 1994: 51 . Type species: Racenisia fimbriipinna Mago-Leccia, 1994 . Type by original designation. Gender: feminine.

Remarks: Treated as a junior synonym of Microsternarchus in Albert, Campos-da-Paz (1998), but as valid in Albert (2001) and Albert, Crampton (2003a).