FIGURE 1. A in How many species of Sturisoma (Siluriformes: Loricariinae) inhabit the La Plata Basin?

FIGURE 1. A: left lateral view of the holotype of Sturisoma barbatum (=Loricaria barbata Kner, 1853:12, 23, pl. 5. Type locality: Rio Cuiabá, Cujaba - Fluss [Brazil]), NMW 46155; B: Drawing of the holotype of Sturisoma barbatum taken from Kner (1853); C: Drawing of the holotype of Oxyloricaria robusta taken from Regan (1904; reverse image). Arrows indicate plate counting of non-coalescent median series, and the first and last coalescent ones.