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214 results for “Stevardiinae”
FIGURE 19 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 19. Sheared principal component analysis of morphometric data of Gephyrocharax major: (A–B) comparison among type specimens of G. major and G. chaparae (its junior synonym); (C–D) comparison among specimens organized by geographic groups. Left plots (A and C) showing first and second principal components (PC1 vs. PC2), right plots (B and D) showing second and third principal components (PC2 vs. PC3). Sheared principal component: H, principal component centered by groups: S. Percentage of explained variance beside each component.
FIGURE 14 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 14. Gephyrocharax intermedius, (A) male, holotype, 44.2 mm SL, FMNH 8945; (B) female, paratype, 39.1 mm SL, FMNH 12512; (C) male, STRI 7654, 36.5 mm SL; (D) male, holotype of G. whaleri, 39.5 mm SL, USNM 106513; (E) female, paratype, 37.2 mm SL, USNM 235926.
FIGURE 17 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 17. Gephyrocharax major, (A) male, lectotype by present designation, 40.6 mm SL, CAS 44286; (B) male, 45.7 mm SL, CAS 78813; (C) female, 48.1 mm SL, CAS 78813; (D) male, 60.0 mm SL, MUSM 12946; (E) female, holotype of Corynopomops opisthopterus, 30.9 mm SL, ANSP 69195; (F) female, holotype of G. chaparae, 32.8 mm SL, ANSP 68967. Photographs represent some geographic groups analyzed using SPCA in text.
FIGURE 2 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 2. Geographic distribution of Gephyrocharax major, a Cis-Andean species, from Amazon River basin in Bolivia and Peru.
FIGURE 6 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 6. Tukey box plots of (A) number of maxillary teeth, (B) number of branched anal-fin rays, (C) number of branched pelvic-rays, and (D) number of lateral-line scales comparing among Gephyrocharax species. Number of specimens between brackets.
FIGURE 1 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 1. Geographic distribution of Trans-Andean species of Gephyrocharax occurring west from eastern versant of Andean Cordillera in northwestern South America to southern Central America.
FIGURE 10 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 10. Gephyrocharax chocoensis, (A) male, holotype, 48.2 mm SL, FMNH 56016; (B) female, 45.0 mm SL, AMNH 5330; (C) male, 35.5 mm SL, CAR 320; (D) male, 32.1 mm SL, CI-FML 6103. Additional illustration in Maldonado-Ocampo et al. (2012: 145). Humeral blotch variably present across photos A–D.
FIGURE 13 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 13. Sheared principal component analysis of morphometric data of Gephyrocharax chocoensis (specimens grouped by absence/presence of humeral blotch): (A) plot of first and second principal components (PC1 vs. PC2); (B) plot of second and third principal components (PC2 vs. PC3). Sheared principal component: H, principal component centered by groups: S. Percentage of explained variance beside each component.
FIGURE 18 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 18. Gephyrocharax major, (A–B) upper and lower jaws, female, 46.5 mm SL, UF 38194; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 49.4 mm SL, MUSM 8518. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view, left side. Scale = 1 mm.
FIGURE 15 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 15. Gephyrocharax intermedius, (A–B) upper and lower jaws, female, 40.8 mm SL, STRI 1209, right side; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 42.6 mm SL, STRI 1209, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 11 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 11. Gephyrocharax chocoensis, (A–B) upper and lower jaws, female, 39.4 mm SL, IMCN 4830, right side; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 38.9 mm SL, IMCN 4830, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, posteroventral lobe: pvl, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 12 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 12. Regression plot by sex of pectoral fin to pelvic fin length as function of SL for Gephyrocharax chocoensis (females, r = 0.98, r2 = 0.96, ɑ = 0, β = 0.212, n = 53; males, r = 0.90, r2 = 0.81, ɑ = 0, β = 0.194, n = 44).
FIGURE 9 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 9. Regression plot by sex of caudal peduncle depth as function of SL for Gephyrocharax caucanus (females, r = 0.98, r2 = 0.96, ɑ = 0, β = 0.088, n = 31; males, r = 0.96, r2 = 0.92, ɑ = 0, β = 0.097, n = 31).
FIGURE 16 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 16. Sheared principal component analysis of morphometric data of Gephyrocharax intermedius: (A–B) comparison among type specimens of G. intermedius and G. whaleri (its junior synonym); (C–D) comparison among specimens organized by geographic groups. Left plots (A and C) showing first and second principal components (PC1 vs. PC2), right plots (B and D) showing second and third principal components (PC2 vs. PC3). Sheared principal component: H, principal component centered by groups: S. Percentage of explained variance beside each component.
FIGURE 8 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 8. Gephyrocharax caucanus, (A–B) upper and lower jaws, female, 39.8 mm SL, IMCN 3084, right side; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 32.3 mm SL, IMCN 2260, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, posteroventral lobe: pvl, principal caudal-fin ray: pcr, retroarticular: ra, spurshaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 5 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 5. Gephyrocharax atracaudatus, (A–B) upper and lower jaws, female, 43.5 mm SL, STRI 7228; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 44.1 mm SL, STRI 7228. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view, left side. Scale = 1 mm.
FIGURE 4 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 4. Gephyrocharax atracaudatus, (A) female, holotype, 39.7 mm SL, FMNH 7573; (B) male, 37.7 mm SL, STRI 1178; (C) female, 38.2 mm SL, AMNH 37808. Additional illustration in Burns & Weitzman (2005: fig. 14).
FIGURE 3 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 3. Geographic distribution of Gephyrocharax species occurring from eastern versant of Andean Cordillera across Lake Maracaibo and Orinoco basins to island of Trinidad in northeast South America. Map includes additional records reported by Bonilla-Rivero & López-Rojas (1997) and Bonilla-Rivero & López-Rojas (2001) for G. valencia (MBUCV 297, 3023, 3029, 3051, 35679, and 35682; Cúpira, Las Peñas de Taría, and Urama Rivers basin, not catalogued) and G. venezuelae (MBUCV 35685, 35686, and 35687).
Supplementary material 4 from: Vanegas-Ríos JA, Serra Alanís WS, Azpelicueta MM, Litz T, Malabarba LR (2024) Population variation of Diapoma pampeana (Characiformes, Characidae, Stevardiinae) from an isolated coastal drainage in Uruguay, with new records: comparing morphological and molecular data. Zoosystematics and Evolution 100(1): 69-85. https://doi.org/10.3897/zse.100.112778
Cluster analysis (Ward's method) of size-corrected morphometric data of analyzed specimens of Diapoma pampeana
FIGURE 5 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 5. Gephyrocharax machadoi sp. n., CPUFMT 1463, paratype, male 41.4 mm SL, caudal fin skeleton showing gap between second and third ventral procurrent rays. Note associated accessory scales.
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