Hypostomus roseopunctatus Reis, Weber & Malabarba, 1990

Terán, Guillermo E., Aguilera, Gastón, Díaz, Federico Ruiz, Koerber, Stefan & Mirande, Juan Marcos, 2020, First record of Hypostomus roseopunctatus (Siluriformes: Loricariidae) for Argentina., Ichthyological Contributions of PecesCriollos 65, pp. 1-4 : 1

Hypostomus roseopunctatus Reis, Weber & Malabarba, 1990

figs. 1 , 2; tabs. 1 , 2 .

CI-FML 7797 . 1 ex, 57.2 mm SL. Miriñay River , Uruguay River basin, Corrientes, Argentina. 29°33'42.19"S, 57°30'36.85"W. Coll.: Terán, Aguilera, Ruiz Diaz & Mirande, Sep 2019 ( figs. 3 , 4 ) .

The specimen presents the characters described for Hypostomus roseopunctatus ( Reis et al., 1990) : low number of teeth in each premaxillae and dentary (9-12, species range 6-16), eight scutes accompanying the dorsal-fin base (species range 9-10), three scutes bordering the posterior margin of the supraoccipital (species range 3), and the proportion of the mandibular-ramus length in the interorbital width of 2.3 (species range 2.1-3.6). Also, the alive specimen presented dark brown background and irregularly yellow to pink spots.

Figures

fig. 1. Hypostomus roseopunctatus (CI-FML 7797). Miriñay River, Argentina. Lateral and dorsal view. 57.2 mm SL.

fig. 3. (above) Miriñay River, Uruguay River basin, Corrientes, Argentina, at collecting site of Hypostomus roseopunctatus. September 2019

fig. 4. (right) Known collection localities along the Uruguay River: Brazilian paratypes (white, from Reis et al., 1990), sole record from Uruguay (yellow, from Serra et al., 2014), and the new finding from Argentina (blue). The northernmost white dot covers several localities.