Gymnotus varzea Crampton, Thorsen, Albert, 2005

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

Gymnotus varzea Crampton, Thorsen, Albert, 2005

Gymnotus varzea Crampton, Thorsen, Albert, 2005: 94 , fig. 8. Type locality: Brazil, Amazonas , munic. Alvarães , Mamirauá Reserve, Ressaca da Vila Alencar, 3°07’42”S, 64°48’02”W. Holotype: MZUSP 60601 ; 173 mm TL.

Distribution: Mouth of Japurá River near Tefé, Amazonas, Brazil ( Crampton et al., 2005).

HYPOPOMIDAE Mago-Leccia, 1978 (6 genera; 34 species)

Hypopomidae Mago-Leccia, 1978: 14 . Type genus: Hypopomus Gill, 1864 .

Brachyhypopominae Albert, 2001: 68. Type genus: Brachyhypopomus Mago-Leccia, 1994 .

Microsternarchini Albert, 2001: 69. Type genus: Microsternarchus Fernández-Yépez, 1968 .

Checklist: Albert, Crampton (2003a); Campos-da-Paz (2007c), Brazil

Remarks: The genera Hypopygus and Steatogenys , their synonyms, and the available species-group names that are associated with those genera are moved to the Rhamphichthyidae , following Tagliacollo et al. (2016).

AKAWAIO Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton, Lovejoy, 2014 (1 species)

Akawaio Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton, Lovejoy, 2014: 27 . Type species Akawaio penak Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton,Lovejoy, 2014 , Type by monotypy.Gender:masculine.

Remarks: Name first appeared on-line in 2013, but name not made available until January, 2014.

Akawaio penak Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton, Lovejoy, 2014

Akawaio penak Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton, Lovejoy 2014: 27 , fig. 4. Type locality: Guyana, Zone 7, Kamarang, Mazaruni River, 5°56’10.1”N, 60°36’53.8”W. Holotype: CSBD 1654; 208 mm TL.

Remarks: Name first appeared on-line in 2013, but name not made available until January, 2014.

Distribution: Main channel of upper Mazaruni River and its tributaries, Guyana ( Maldonado-Ocampo et al., 2014).

BRACHYHYPOPOMUS Mago-Leccia, 1994 (28 species)

Brachyhypopomus Mago-Leccia, 1994: 47 . Type species: Rhamphichthys brevirostris Steindachner, 1868 . Type by original designation. Gender: masculine.

Odontohypopomus Sullivan, Zuanon, Cox Fernandes, 2013: 6. Type species: Brachyhypopomus (Odontohypopomus) walteri Sullivan, Zuanon, Cox Fernandes, 2013 . Type by original designation. Gender: masculine. Proposed as a subgenus of Brachyhypopomus .

Remarks: See Remarks in account of Hypopomus for explanation of gender of these two names.

Revision and key: Crampton et al. (2016b).

Phylogeny: Crampton et al. (2016a).

Brachyhypopomus alberti Crampton, de Santana, Waddell, Lovejoy, 2016

Brachyhypopomus alberti Crampton, de Santana, Waddell, Lovejoy, 2016b: 653 , fig. 4. Type locality: Bolivia, Beni, mun. Riberalta - stream nr. village San José, nr. Riberalta , aff. río Beni, aff. rio Madeira , rio Amazonas drainage, 10°55’32”S, 66°00’36”W. Holotype: CBF 10284; 97 mm TL.

Distribution: Upper Madeira River and Guaporé River, Brazil, and lower Beni River, Bolivia ( Crampton et al., 2016b).

Brachyhypopomus arrayae Crampton, de Santana, Waddell, Lovejoy, 2016

Brachyhypopomus arrayae Crampton, de Santana, Waddell, Lovejoy, 2016b: 664 , fig. 6. Type locality: Bolivia, Beni, Mun. Riberalta - small stream nr. village Puerto Hamburgo, aff. río Beni, aff. rio Madeira, rio Amazonas drainage, 11°01’52”S, 66°05’39”W. Holotype: UMSS 7048 ; 77 mm TL.

Distribution: Upper Madeira River basin, especially Beni River, Bolivia, and Madre de Dios River, Peru ( Crampton et al., 2016b).

Brachyhypopomus batesi Crampton, de Santana, Waddell, Lovejoy, 2016

Brachyhypopomus batesi Crampton, de Santana, Waddell, Lovejoy, 2016b: 667 , fig. 8. Type locality: Brazil, Amazonas , Mun. Tefé, igarapé Xidarini , aff. lago Tefé (mouthbay of rio Tefé), rio Amazonas drainage, 3°23’52”S, 64°41’17”W. Holotype: MCP 47020; 104 mm TL.

Distribution: Middle reaches of Amazon, Brazil, and upper Negro River, Colombia ( Crampton et al., 2016b).