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FIGURE 8 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 8 | Bujurquina mabelae, paratype, UMSS 17218, 55.0 mm SL, Río Eñe, tributary of the Río Chapare, Río Mamoré drainage.

FIGURE 5 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 5 | Geographic distribution of Bujurquina beniensis (red circles), B. mabelae (blue circles), B. cf. cordemadi (yellow circle), B. oenolaemus (purple circles), and B. vittata (green circles); star represents type localities. The delimitation and naming of the basins and drainages correspond to those proposed in Carvajal-Vallejos et al. (2014).

FIGURE 2 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 2 | Diagnostic coloration characters in Bujurquina. Longitudinal band (LB), caudal spot (CS), lateral bars 1–7 (B1–B7), nape band (NB), interorbital band (IOB), preopercular spot (POS), opercular spot (OS), suborbital stripe (SOS), buccal spots (BS).

FIGURE 10 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 10 | Bujurquina species from Bolivia. A. Bujurquina beniensis, paratype, UMSS 12080.1, 92.1 mm SL, La Paz, Nuevo Tunari community's stream, tributary of Río Beni. B. Bujurquina vittata, UMSS 12445, 54.7 mm SL, Santa Cruz, Laguna Cáceres, Río Paraguay drainage. C. Bujurquina mabelae, paratype, UMSS 12383.2, 58.0 mm SL, Río Quizerna, tributary of Río Iténez drainage. D. Bujurquina cf. cordemadi, CBF-15093, Río Heath, tributary of Río Madre de Dios drainage. E. Bujurquina oenolaemus, UMSS 18503, 66.4 mm SL, Río Aguas Calientes, tributary of Río Paraguay drainage. F. Bujurquina mabelae, paratype, UMSS 922.2, 57.9 mm SL, Cochabamba, Río Surutú, tributary of Río Grande drainage, Río Mamoré drainage.

FIGURE 6 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 6 | Habitat where the paratype CBF-15090 of Bujurquina beniensis was collected in the Río Hondo, a tributary of the Río Beni drainage.

FIGURE 9 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 9 | Habitat where the paratype UMSS 17218 of Bujurquina mabelae was collected in the Río Eñe, a tributary of the Río Chapare, Río Mamoré drainage.

FIGURE 7 in Description of two new species of Bujurquina (Teleostei: Cichlidae) from the Bolivian Amazon

FIGURE 7 | Bujurquina mabelae, holotype, UMSS 18502, 64.5 mm SL, Bolivia, Cochabamba, Río San Pedro, a tributary of the Río Mamoré drainage.

Fig. 17 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 17. Phylogenetic relationships and species delimitation within Bujurquina Kullander, 1986 based on the cytb marker from BEAST analysis. Numbers at nodes show age in Ma, grey bars at nodes show confidence intervals of age estimates (95% HPD). Bayesian posterior probabilities above 0.95 are shown as black points on nodes. Scale bar shows 5 My. Note the two main groups of Bujurquina.

Fig. 16 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 16. PCA based on morphometric proportional values of LPJ of all described species in Bujurquina Kullander, 1986 based on specimens ≥ 60 mm SL. Colors represent individual species. Note that B. omagua sp. nov. has the most outlying LPJ shape.

Fig. 15 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 15. Morphometric variation and discrimination of Northern group species in Bujurquina from the central western Amazon river basin (i.e., excluding B. zamorensis (Regan, 1905)) based on morphometric proportional values of SL in PCA based on specimens ≥ 60 mm SL. Colors represent individual species. Note main separation along PC1 which also corresponds to two main ecomorphs (lotic and lentic). Note that B. omagua sp. nov. is separated from these geographically closest species by its large head and long snout. Note improved separation of B. huallagae Kullander, 1986, B. ortegai Kullander, 1986 and B. moriorum Kullander, 1986 after exclusion of B. zamorensis (cf. Fig. 14).

Fig. 14 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 14. Morphometric variation and discrimination of Northern group species in Bujurquina Kullander, 1986 from the western Amazon river basin based on morphometric proportional values of SL in PCA based on specimens ≥ 60 mm SL. Colors represent individual species. Note main separation along PC1 which also corresponds to two main ecomorphs (lotic and lentic). Note that B. omagua sp. nov. is separated from these geographically closest species by its large head. Note that B. zamorensis (Regan, 1905) is the most lotic and B. syspilus (Cope, 1872) the most lentic species identified by the analysis.

Fig. 12 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 12. Lower portions of Sabalillo and Oran streams with muddy water with a blackish tinge (June 2018). Bujurquina omagua sp. nov. was not encountered in these habitats, which are typical for B. syspilus (Cope, 1872) in this area (see Fig. 13). A. Quebrada Sabalillo close to mouth into Amazon River. B. Oran creek at mouth of P18-21.

Fig. 13 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 13. Distribution of Bujurquina omagua sp. nov. and parapatric species in the so far whole known area close to Oran village, District Las Amazonas, Maynas Province, Department Loreto, Perú.

Fig. 10 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 10. Bujurquina omagua sp. nov., paratype (MUSM 70222, P18-16_1185, 79.9 mm), lower pharyngeal tooth plate in occlusal view. Scale bar = 1 mm.

Fig. 8 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 8. Bujurquina omagua sp. nov., color photos of preserved specimens. A. Holotype (MUSM 70225, ID tag 1189), 97.4 mm. B. Paratype (MUSM 70226, P18-17_1190), 98.9 mm.

Fig. 5 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 5. Detailed photographs of the spinous portion of the dorsal fin of species of Bujurquina Kullander, 1986 in the Northern group (see Figs 1 and 4). Note two main types of patterning of the dorsal fin, a blotched patterning vs lines in the spinous portion of the dorsal fin. Note additional differences in patterning of the spinous portion of the dorsal fin between the species, such as different numbers of lines per membrane, their thickness or angle. Also note differences in the coloration of the dorsal fin lappets between some of the species.

Fig. 6 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 6. Bujurquina omaguasp. nov., holotype (MUSM 70225), 97.4 mm, ID tag 1189, Quebrada Sabalillo, cabeceras upper loc. P18-17 (3°27´08.4˝ S, 72°29´11.8˝ W). A. Left side. B. Right side reversed.

Fig. 2 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 2. Representative live specimens of the valid species of Bujurquina Kullander, 1986 (plus B. sp. Bolivia) in the Southern group (no photo of a live specimen of B. cordemadi Kullander, 1986 is available and we are not aware that the species has ever been reliably identified and photographed alive).

Fig. 7 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 7. Bujurquina omagua sp. nov., paratypes. A. MUSM 70223, P18-16_1186, 92.6 mm. B. MUSM 70222, P18-16_1185, 79.9 mm. C. MUSM 70221, P18-15_1182, 78.7 mm. D. MUSM 70226, P18- 17_1190, 98.9 mm. E. MUSM 70229, P18-21_1200. F. MUSM 70227, P18-17_1191, 69.7 mm. G. MUSM 70228, P18-17_1192, 77.1 mm.

Fig. 1 in A new highly apomorphic species of Bujurquina (Teleostei: Cichlidae) from a reverse flowing river in the Peruvian Amazon, with a key to the species in the genus

Fig. 1. Distribution and the two main groups of species of Bujurquina Kullander, 1986. Shown with red dotted lines are main geographic drainage basin divides (structural arches) of the western Amazon. Red arrows show the two main subducting ridges responsible for the origin of the formation of the structural arches of the western Amazon. All species were included in morphological analyses, species with an asterisk were also available for molecular analyses. Stars denote type localities for valid species.