Calegari, B.B., Morlis, W.G. & Reis, R.E. (2017)

A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus

. Zootaxa, 4244 (2), 231–245.