pantaneiro, Acestrorhynchus Menezes [N. A.] 1992:42 [Comunicações do Museu de Ciências da PUCRS, Série Zoologia v. 5; ref. 21389] Rio Cuiabá, Volta Grande, Município de Santo Antônio do Leverger, Mato Grosso State, Brazil. Holotype: MZUSP 40256. Paratypes: MZUSP 2049 (1), 19938 and 36731 (total 6), 19996 (1), 26913 (1), 27677-78 (2, 1), 27680 (1), 27691 (1), 27815 (4), 36393-94 and 36422 (total 5), 36714 (3); USNM 297759-60 (2, 2), 297762 (7). Type catalog: Oyakawa 1996:449-450 [ref. 23140]. •Valid as Acestrorhynchus pantaneiro Menezes 1992 -- (Braga 1994:24 [ref. 27878], Gómez & Chebez 1996:47 [ref. 23791], Sverlij et al. 1998:12 [ref. 27632], Britski et al. 1999:56 [ref. 24147], Lasso et al. 2001:95 [ref. 25928], Menezes in Reis et al. 2003:232 [ref. 27061], López et al. 2003:34 [ref. 27366], Menni 2004:74 [ref. 28131], Toledo-Piza 2007:755 [ref. 29426], Mirande 2010:482 [ref. 31006], Litz & Koerber 2014:10 [ref. 33622], Sarmiento et al. 2014:35, 183 [ref. 35004], Mirande & Koerber 2015:16 [ref. 35117], Bertaco et al. 2016:411 [ref. 34561], Petry et al. 2016:301 [ref. 34966], Nión et al. 2016:29 [ref. 35565], Koerber et al. 2017:24 [ref. 35267], Loureiro et al. 2020:14 [ref. 37909], Reis et al. 2020:456 [ref. 38364], Bertaco & Azevedo 2023:4 [ref. 39997], Bertaco et al. 2023:9 [ref. 40740], Loureiro et al. 2023:52 [ref. 40506]). Current status: Valid as Acestrorhynchus pantaneiro Menezes 1992. Acestrorhynchidae: Acestrorhynchinae. Distribution: South America: Argentina, Bolivia, Brazil, Paraguay and Uruguay. Habitat: freshwater.