Review of the genus Hypostomus Lacépède, 1803 from rio Ribeira de Iguape basin, with description of a new species (Pisces, Siluriformes, Loricariidae). Author Osvaldo T. Oyakawa Author Alberto Akama Author Angela M. Zanata text Zootaxa 2005 921 1 27 http://www.zoobank.org/urn:lsid:zoobank.org:pub:913A8172-1A2E-4784-96DB-50BACBEC7C25 journal article z00921p001 913A8172-1A2E-4784-96DB-50BACBEC7C25 Hypostomus commersonii : Brazil. Rio Grande do Sul: - MZUSP 40957, 2, 270.8-284.2 mm SL; mouth of rio Santo Cristo, tributary to rio Uruguai, Porto Maua . - MZUSP 23629, 1, 148.1 mm SL; rio dos Sinos, Sao Leopoldo. - MZUSP 41075, 1, 194.0 mm SL; rio Uruguai, Irai. - MZUSP 41062, 3, 170.7-204.2 mm SL; rio Piratini, tributary of rio Uruguai, Fazenda dos Hinz, Santo Angelo .