Loricaria lentiginosa is a species of catfish of the family Loricariidae.[1] It is endemic to the upper Paraná River basin in Brazil. It reaches 51.4 cm (20.2 inches) in standard length and is believed to be a facultative air-breather.[2] The species was described by Dutch ichthyologist Isaäc J. H. Isbrücker in 1979.