Plesiolebias Costa

Costa, Wilson J. E. M., 2007, Taxonomy of the plesiolebiasine killifish genera Pituna, Plesiolebias and Maratecoara (Teleostei: Cyprinodontiformes: Rivulidae), with descriptions of nine new species, Zootaxa 1410, pp. 1-41 : 20

Plesiolebias Costa

Plesiolebias Costa, 1989b: 193 (type species: Cynolebias xavantei Costa, Lacerda & Tanizaki , by original designation).

Diagnosis. Distinguished from all other genera of Plesiolebiasini by the following unique features: posterior process of quadrate and sympletic long (vs. short) ( Costa, 1998a), interarcual cartilage absent (vs. present) ( Costa, 1998a), rays of anterior portion of anal fin longer than posterior rays (vs. longer) ( Costa, 1995a), and frontal squamation G-patterned (vs. F or D patterned) ( Costa, 1998a).

Distribution. Southeastern Amazonian basin, including Xingu, Araguaia, and Tocantins river drainages, Brazil; and rio Paraguay basin, in northern Brazilian Pantanal ( Fig. 13 ).

Remarks. The systematic accounts below should be viewed as a complement to the recent taxonomic revision of Plesiolebias ( Costa, 1998c) , where redescriptions of P. xavantei , P. l a c e rd a i, P. aruana , and P. glaucopterus are included.

Figures

FIGURE 13. Geographic distribution of genus Plesiolebias. Triangle = P. aruana; inverted triangle = P. altamira; star = P. filamentosus; dots = P. aruana and P. fragilis; square = P. canabravensis; six-tip asterisk = P. lacerdai; eight-tip asterisk = P. glaucopterus; lozenge = P. xavantei. One symbol may represent more than one collecting site.