Taxonomy of the plesiolebiasine killifish genera Pituna, Plesiolebias and Maratecoara (Teleostei: Cyprinodontiformes: Rivulidae), with descriptions of nine new species Author Costa, Wilson J. E. M. text Zootaxa 2007 1410 1 41 journal article 10.5281/zenodo.175565 e56e5bd8-61c0-467b-9941-fff5a5bb81ed 1175-5326 175565 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.