Baryancistrus hadrostomus de Oliveira, Rapp Py-Daniel & Oyakawa, 2019: 488, fig. 6.

Paratypes: 2 lots, 3 specimens —NUP 15277, 2, 48.5–69.5 mm SL: Brazil, Pará, Almeirin, Monde Dourado district, rio Pacanari, tributary of the rio Jari, 0°39’53.4”S, 52°31’36.6”W, C.H. Zawadzki, 14 Nov 2013 . NUP 15307, 1, 128.1 mm SL: Brazil, Amapá, Laranjal do Jari, rio Iratapuru, tributary of the Jari River, 0°34’3.6”S, 52°34’41.3”W, C.H. Zawadzki, 16 Nov 2013 .