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Fig. 11 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 11. Light micrographs through mature ovaries of Lepidocharax. Arrows show spermatozoa (sp). A: Lepidocharax diamantina (MNRJ 21997, 40.4 mm SL). B: Lepidocharax burnsi (MCP 34828, 29.9 mm SL).

Fig. 16 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 16. Scanning electron micrograph of dorsal cranium region. Arrows evidencing the groove in the head above the eyes; A: Diapoma terofali (MCP 11491, 70x magnification) groove reduced, shallow, not well delineated and with only few neuromasts; B: Hysteronotus megalostomus (MZUSP 85978, 50x magnification) groove developed, depth, well delineated and with numerous neuromasts. Anterior to right.

Fig. 9. Lepidocharax burnsi, LIRP 2069 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 9. Lepidocharax burnsi, LIRP 2069, paratype, 34.0 mm SL, adult male. Upper and lower jaws, right side, lateral view. Scale bar = 1 mm.

Fig. 3 in Markiana nigripinnis (Perugia, 1891) as a putative member of the subfamily Stevardiinae (Characiformes: Characidae): spermatic evidence

Fig. 3. Spermatozoa of Markiana nigripinnis LBP 4935. A: Longitudinal section of spermatozoon. Note the lateral position and pattern of chromatin condensation in the nucleus (n), the position of the double nuclear fossa (double arrows), the midpiece and the cytoplasmic canal (*) containing the initial segment of the flagellum (f). A-Inset: Detail of the position, form and depth of the nuclear fossa, and the position of the proximal (p) and distal (d) centrioles to one another and to the nuclear fossa. B: Oblique section of spermatozoa. Note the alveolar aspect of the tubular vesicular system C-K: Cross sections at different levels of the stongly asymmetric midpiece, from the base of the nucleus (n) to the midpiece end. Note the lateral position of the centriole (c), cytoplasmic canal (*) and of the flagellum (f), the distribution of a few elongate and ramified mitochondria (m) accumulated in larger side of the midpiece, tubular vesicular system (v). L: Cross section of the flagellum with the classic axoneme (a).

Fig. 2 in Markiana nigripinnis (Perugia, 1891) as a putative member of the subfamily Stevardiinae (Characiformes: Characidae): spermatic evidence

Fig. 2. Longitudinal sections of early to late spermatids of Markiana nigripinnis LBP 4935. A: Note that the centriolar complex is initially medial to the nucleus (n). B-D: The nuclear rotation toward the flagellar axis, the position of the proximal (p) and distal (d) centrioles, and the dislocation of the mitochondria (m) and cytoplasm to the flagellar portion, forming the cytoplasmic canal (*) and the midpiece (mp) of the spermatozoa.

Fig. 1. Markiana nigripinnis, LBP 7586, 84.4 in Markiana nigripinnis (Perugia, 1891) as a putative member of the subfamily Stevardiinae (Characiformes: Characidae): spermatic evidence

Fig. 1. Markiana nigripinnis, LBP 7586, 84.4 mm SL. Brasil, Mato Grosso, Barão de Melgaço, shore lake of rio Cuiabá.

Fig. 4. Lepidocharax diamantina, MNRJ 21997 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 4. Lepidocharax diamantina, MNRJ 21997, paratypes, 38.0 mm SL. Upper and lower jaws, left side, lateral view. Scale bar = 1 mm.

Fig. 7 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 7. Lepidocharax burnsi, holotype, female, MCP 45718, 34.4 mm SL: Brazil, Minas Gerais, Brumadinho, rio Paraopeba.

Fig. 5. Lepidocharax diamantina, MNRJ 21997 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 5. Lepidocharax diamantina, MNRJ 21997, paratypes, male, 32.3 mm SL. Caudal-fin squamation, lateral view, left side.

Fig. 3 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 3. Hooks on anal-fin rays of Lepidocharax diamantina, MNRJ 21997, paratypes, 38.0 mm SL, adult male.

Fig. 2 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 2. Lepidocharax diamantina, holotype, male, MNRJ 37509, 38.8 mm SL: Brazil, Bahia, Palmeiras, rio Santo Antônio.

Fig. 1 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 1. Maximally parsimonious hypothesis of relationships within the Lepidocharax based on 153 characters.

Fig. 25. Hemibrycon tridens, CAS 44358 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 25. Hemibrycon tridens, CAS 44358, holotype, 51.5 mm SL, male, upper río Ucayali basin, Peru. The black marks are preservation artifacts.

Fig. 21. Hemibrycon surinamensis, ZMA 100347 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 21. Hemibrycon surinamensis, ZMA 100347, paratype, female, 65.0 mm SL, río Paramacca basin, Suriname.

Fig. 24. Hemibrycon taeniurus, MCNG 8199 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 24. Hemibrycon taeniurus, MCNG 8199, female, 57.5 mm SL. Scanning electron micrograph of right side upper and lower jaws. Scale bar = 1 mm.

Fig. 6. Hemibrycon helleri, ANSP 180775 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 6. Hemibrycon helleri, ANSP 180775, female, 66.6 mm SL. Scanning electron micrograph of right side upper and lower jaws. Scale bar = 1 mm.

Fig. 13. Hemibrycon jelskii, MUSM 19562 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 13. Hemibrycon jelskii, MUSM 19562, male, 52.1 mm SL. Scanning electron micrograph of left side upper and lower jaws. Scale bar = 1 mm.

Fig. 2 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 2. Tukey box plots of number of branched anal-fin rays in Hemibrycon species. Mean represented by thick vertical bar, and 25th and 75th percetiles as lateral borders of box plots. Number in parentheses = N.

Fig. 17. Hemibrycon mikrostiktos, MCP 44521 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 17. Hemibrycon mikrostiktos, MCP 44521, paratype, female, 35.7 mm SL. Scanning electron micrograph of left side upper and lower jaws. Scale bar = 1 mm.

Fig. 9. Hemibrycon huambonicus, ROM 55406 in A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species

Fig. 9. Hemibrycon huambonicus, ROM 55406, male, 70.0 mm SL. Scanning electron micrograph of right side upper and lower jaws. Scale bar = 1 mm.