Pituna Costa

Pituna Costa, 1989a: 225 (type species: Pituna poranga Costa, by original designation).

Diagnosis. Distinguished from all other genera of the Plesiolebiasini in possessing dark brown flanks, with oblique rows of golden spots in males (vs. never a similar color pattern). Pituna may also be distinguished by the following combination of characters: body squamation extending onto anterior 40–50 % of caudal fin in males (vs. 25–30 %), pectoral-fin rays 14–15 (vs. 11–13), caudal fin dark brown in males (vs. caudal fin never darkly colored in males), humeral spot metallic blue in males (vs. humeral spot absent), dorsal-fin rays 8–11 (vs. 11–13), anal-fin rays 13–16 (vs. 17–20), pelvic-fin rays 7 (vs. 8–9), dorsal and anal fins pointed in males (vs. rounded); distal portion of dorsal fin red in males (vs. not distinctively colored).

Distribution. Xingu, Araguaia, Tocantins, Paranaiba, and Paraná river basins, Brazil (Fig. 1).