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Fig. 7. Hisonotus notatus, DZSJRP 13874 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 7. Hisonotus notatus, DZSJRP 13874, non-type, 43.5 mm SL, female, Brazil, Rio de Janeiro, Silva Jardim Municipality, rio São João drainage.

Fig. 3 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 3. Lateral plates of trunk of Hisonotus notatus, DZSJRP 13852, 31.5 mm SL, male (a) and Hisonotus thayeri, DZSJRP 20157, paratype, 32.4 mm SL, female (b), left side. Scale bars = 1mm.

Fig. 6. Hisonotus notatus, MCZ 7764 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 6. Hisonotus notatus, MCZ 7764, paralectotype, 29.2 mm SL, female, Brazil, Rio de Janeiro, Santa Cruz district.

Fig. 2 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 2. Scanning electron micrographs of tip of snout of Hisonotus notatus, DZSJRP 13852, 34.6 mm SL (a, c) and Hisonotus thayeri, MNRJ 14752, 38.4 mm SL, paratype (b, d).

Fig. 4 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 4. Sexual dimorphism in body depth in Hisonotus notatus, MNRJ 38147, female, 37.2 mm SL (above), and male 32.3 mm SL (below).

Fig. 5 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 5. Geographic distribution of Hisonotus notatus (black squares, and star for type locality) and Hisonotus thayeri (red dots, and triangle for type locality) in southeastern Brazilian costal drainages. Symbols can represent more than one sampling locality.

Fig. 1 in Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil

Fig. 1. Hisonotus thayeri, new species, MNRJ 42382, holotype, 36.7 mm SL, female, Brazil, Espírito Santo State, Guarapari Municipality, rio Benevente drainage.

Fig. 4. Hisonotus ringueleti, ILPLA 883 in A New Species of Hisonotus (Siluriformes, Loricariidae) of the Upper Río Uruguay Basin

Fig. 4. Hisonotus ringueleti, ILPLA 883, caudalfin pigmentation. Top, 27.4 mm SL, bottom, 31.5 mm SL.

Fig. 3 in A New Species of Hisonotus (Siluriformes, Loricariidae) of the Upper Río Uruguay Basin

Fig. 3. Scanning electron micrograph of snout anterior rostral margin of Hisonotus ringueleti (AMNH 230702, female, 33.2 mm SL), scale bars 0.5 mm. Top, anterior view showing biserial arrangement of odontodes, 20×; bottom, magnification showing faceted odontodes of the ventrad series, 80×.

Fig. 2. Hisonotus ringueleti, ILPLA 883. A in A New Species of Hisonotus (Siluriformes, Loricariidae) of the Upper Río Uruguay Basin

Fig. 2. Hisonotus ringueleti, ILPLA 883. A, Body lateral view, pattern of trunk lateral plates; B, pectoralfin spine; dorsal view, anterior toward top; C, D, anal region in males and females, respectively, showing sexual dimorphism in pelvicfin length; anterior toward top.

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Fig. 1 in A New Species of Hisonotus (Siluriformes, Loricariidae) of the Upper Río Uruguay Basin

Fig. 1. Hisonotus ringueleti, holotype, ILPLA 886, female, 35.8 mm SL.

FIGURE 3 in Description of a new species of Hisonotus (Loricariidae: Siluriformes) from rio Araguaia basin

FIGURE 3. Map showing the collection sites of Hisonotus dinizae at rio São Araguaia basin. Black-star shows the type-locality at córrego Grande sub-basin (light-grey), black-square the paratype locality at rio Corrente sub-basin (dark-grey), and blackcircle the non-paratype locality at ribeirão Ínsula sub-basin (mid-grey).

FIGURE 4 in Description of a new species of Hisonotus (Loricariidae: Siluriformes) from rio Araguaia basin

FIGURE 4. Habitat of H. dinizae at type-locality of córrego Grande, drainage of rio Pindaíba, rio Araguaia basin, municipality of Barra do Garças, Mato Grosso state, Brazil.

FIGURE 1. Hisonotus dinizae, MZUSP 125790 in Description of a new species of Hisonotus (Loricariidae: Siluriformes) from rio Araguaia basin

FIGURE 1. Hisonotus dinizae, MZUSP 125790, holotype, female, 23.3 mm SL. Brazil, Mato Grosso state, córrego Grande, drainage of rio Pindaíba, rio Araguaia basin (-15.7417; -52.0936).

FIGURE 2. Hisonotus dinizae, LBP1572 in Description of a new species of Hisonotus (Loricariidae: Siluriformes) from rio Araguaia basin

FIGURE 2. Hisonotus dinizae, LBP1572, non-type specimen from rio Corrente, tributary of ribeirão Ínsula (-15.4992; - 52.2028).

FIGURE 1 in A new species of Hisonotus (Siluriformes: Otothyrinae) from the upper rio Paraná and rio São Francisco basins, Brazil

FIGURE 1. Hisonotus alberti, holotype, MZUSP 118845, male, 33.5 mm SL, from ribeirão das Posses, upper rio Paraná basin in municipality of São Roque de Minas, Brazil.

FIGURE 2 in A new species of Hisonotus (Siluriformes: Otothyrinae) from the upper rio Paraná and rio São Francisco basins, Brazil

FIGURE 2. Cleared and stained images showing the variation in abdominal plates. (a) Hisonotus alberti, LBP 10266, 32.1 mm SL, abdomen completely exposed, with absence of dermal plates; (b) H. alberti, LBP 10266, 31.5 mm SL, abdomen with extremely small plate (black arrow) near the urogenital opening; (c) H. chromodontus, LBP 7948, 23.1 mm SL, abdomen partially covered by plates; (d) H. chromodontus, LBP 7948, 27.2 mm SL, abdomen completely covered by plates.

FIGURE 3 in A new species of Hisonotus (Siluriformes: Otothyrinae) from the upper rio Paraná and rio São Francisco basins, Brazil

FIGURE 3. Hisonotus alberti, paratype, LBP 10266, 32.1 mm SL, sex not determined. (a) Dorsal view illustrating the rectangular shape of the spinelet; (b) Lateral view illustrating lateral trunk plates; (c) dorsal and (d) lateral views illustrating the configuration of cranial bones and dermal plates of the head.

FIGURE 4 in A new species of Hisonotus (Siluriformes: Otothyrinae) from the upper rio Paraná and rio São Francisco basins, Brazil

FIGURE 4. Distribution map of Hisonotus alberti in the upper rio Paraná basin (red) and upper rio São Francisco basin (yellow). The green dot represents the type locality at ribeirão das Posses, municipality of São Roque de Minas, 20°17'15"S, 46°34'53"W. The blue dots represent paratype localities.