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112 results for “Ancistrus”
FIGURE 13 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 13. Ancistrus leucostictus in dorsal, lateral, and ventral views, AUM 48162, 185.3 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 22 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 22. Live coloration of Ancistrus saudades in dorsal and lateral views, AUM 67055, 58.1 mm SL. Scale = 1 cm. Photos by N.K. Lujan.
FIGURE 11 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 11. Holotype of Ancistrus leoni in dorsal, lateral, and ventral views, MCNG 53811, 81.6 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 7 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 7. Distribution of species of Ancistrus from the northwestern Guiana Shield and neighboring regions.
FIGURE 10 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 10. Live coloration of the holotype of Ancistrus kellerae in dorsal and lateral views, CSBD F 1721, 69.9 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 25 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 25. Ancistrus triradiatus in dorsal, lateral, and ventral views, MCNG 8199, 77.7 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 15 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 15. Live coloration of Ancistrus lithurgicus in dorsal and dorsolateral views, AUM 37941, 40.4 mm SL. Scale = 1 cm. Photo by M.H. Sabaj.
FIGURE 5 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 5. Heads, dorsal view, of A. Ancistrus nudiceps AUM 35623, 140.2 mm SL and B. A. patronus, holotype, AUM 39876, 83.6 mm SL demonstrating differences in head shape and tentacle pattern. Ancistrus nudiceps has a longer, more spatulate snout with the point from the edge of medial snout plates to the end of the snout (turquoise line) much shorter than the distance from the edge of the medial snout plates to a line through the anterior margins of the orbits (yellow line, dashed line is the line that demarks the anterior borders of the orbits) while the two lengths are approximately equal in A. patronus. In addition, the anterior margin of the snout plates form a rough V in A. nudiceps and a U in A. patronus (solid white line). Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 8 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 8. Ancistrus brevifilis in dorsal, lateral, and ventral views, MCNG 14304, 61.2 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 19 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 19. Ancistrus patronus, holotype, in dorsal, lateral, and ventral views, AUM 39876, 83.6 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 6 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 6. Holotype of Ancistrus amaris in dorsal, lateral, and ventral views, MCNG 41858, 103.4 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 27 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 27. Some of the diversity present in Ancistrus triradiatus. A. Specimen from the lower Río Caroni showing a lateral body color similar to A. leucostictus and an abdomen with very slight spotting, AUM 36554, 86.2 mm SL. Photos by J.W. Armbruster. B. Specimen from southwestern Venezuela in dorsal view with short pectoral fins, AUM 22190, 80.1 mm SL.
FIGURE 9 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 9. Holotype of Ancistrus kellerae in dorsal, lateral, and ventral views, CSBD F 1721, 69.9 mm SL. Scale = 1 cm. Photos by J.W. Armbruster.
FIGURE 2 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 2. Relevant morphometrics of species of Ancistrus. A. Head length vs. SL for the wide jawed species, A. amaris (dots) and A. yutajae (circles). B. Principal Components Analysis for the flat species, A. leoni (gray dots), A. lithurgicus (black dots), and A. macropthalmus (triangles). PC2 was affected most strongly and positively by Dorsal-Pelvic Distance, Snout Length, and Thorax Length and most strongly and negatively by Head-Eye Length, Interorbital Width, and Head-Pectoral Length. PC3 was affected most strongly and positively by Premaxillary Tooth Cup Length, Internares Width, and Dorsal-Pelvic Distance, and most strongly and negatively by Pelvic-Dorsal Distance, Adipose Spine Length, and Adipose-Upper Caudal Distance. C. PCA of A. kellerae and A. nudiceps by drainage. PC2 was affected most strongly and positively by Eye Length, Dorsal-Anal Distance, and Dorsal Spine Length, and most strongly and negatively by Interorbital Width, Adipose-Spine Length, and Orbit Diameter. PC4 was affected most strongly and positively by Adipose-anal Distance, Dorsal-Pelvic Distance, and Dorsal-Anal Distance, and most strongly and negatively by Dentary Tooth Cup Length, Internares Width, and Premaxillary Tooth Cup Length. D. Number of Hypertrophied Cheek Odontodes by SL in species of the A. nudiceps group.
FIGURE 1 in Review of Ancistrus (Siluriformes: Loricariidae) from the northwestern Guiana Shield, Orinoco Andes, and adjacent basins with description of six new species
FIGURE 1. Ancistrus nudiceps, lateral and anterior views, AUM 35623, 138.4 mm SL. Photos by M.H. Sabaj.
Fig. 4 in A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil
Fig. 4. Dorsal, lateral and ventral views (left to right) of Ancistrus bolivianus: NMW 43475, 65.6 mm SL, syntype; A. heterorhynchus: BMNH 1911.12.20.35-36, 63.2 mm SL, syntype; A. marcapatae: BMNH 1902.5.29.211, 79.1 mm SL, holotype.
Fig. 5. Ancistrus marcapatae, MUSM 57853, 54,6 in A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil
Fig. 5. Ancistrus marcapatae, MUSM 57853, 54,6 mm SL, male; Peru, Manu, rio Madre de Dios drainage, rio Adanrayo.
Fig. 3 in A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil
Fig. 3. Partial map of the Brazilian Amazon, showing the distribution of Ancistrus miracollis. Red star indicates type locality.
Fig. 2 in A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil
Fig. 2. Color pattern variation in Ancistrus miracollis. Standard length from top to bottom, left to right: 27.7 mm SL, 30.3 mm SL, 35.5 mm SL, 41.2 mm SL, 48.4 mm SL, 51.6 mm SL, 58.4 mm SL (all from INPA 26433), 60.1 mm SL (INPA 24144).
Fig. 1. Ancistrus miracollis, INPA 57624 in A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil
Fig. 1. Ancistrus miracollis, INPA 57624, holotype, 66.7 mm SL, male; Brazil, Apuí, rio Sucunduri drainage, lower rio Madeira basin.
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