This dataset contains the digitized treatments in Plazi based on the original journal article Costa, Wilson J. E. M., Ramos, Telton P. A., Alexandre, Luisa C., Ramos, Robson T. C. (2010): Cynolebias parnaibensis, a new seasonal killifish from the Caatinga, Parnaíba River basin, northeastern Brazil, with notes on sound producing courtship behavior (Cyprinodontiformes: Rivulidae). Neotropical Ichthyology 8 (2): 283-288, DOI: 10.1590/S1679-62252010000200006, URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200006&lng=en&tlng=en
Cynolebias parnaibensis from the Canindé River drainage, Parnaíba River basin, northeastern Brazil, is described. It is considered to be a member of a clade endemic to the Caatinga. The clade is diagnosed, e. g., by a series of structural modifications of the pharyngeal jaw apparatus, which is related to the sound production exhibited by males during courtship behavior. The courtship sound of C. parnaibensis consists of a single pulse named as thump (duration 0.031 - 0.133 s; interthump intervals 0.020 - 8.319 s; dominant frequency 70.3-93.8 Hz). The new species is distinguished from all other congeners by a combination of 27-31 neuromasts around eye, 29-33 supraorbital neuromasts, 16-18 dorsal-fin rays and 19 anal-fin rays in males, 28-31 caudal-fin rays, 33-36 scales in the longitudinal series, 3+10 gill-rakers in the first branchial arch, absence of second pharyngobranchial teeth, absence of contact organs on the flank scales, 34-35 vertebrae, absence of teeth on vomer, and presence of transverse series of scales on the anal-fin base.
Cynolebias parnaibensis, da drenagem do rio Canindé, bacia do rio Parnaíba, nordeste do Brasil, é descrita. Ela é considerada um membro de um clado endêmico da Caatinga. O clado é diagnosticado, e. g., por uma série de modificações estruturais do aparato mandibular faringiano, que está relacionado à produção de som exibida por machos durante o comportamento de corte. O som de corte de C. parnaibensis consiste de um único pulso denominado como thump (duração 0,031 - 0,133 s; intervalos entre thumps 0,020 - 8,319 s; frequência dominante 70,3-93,8 Hz). A nova espécie se distingue de todos os outros congêneres por uma combinação de 27-31 neuromastos em torno do olho, 29-33 neuromastos supraorbitais, 16-18 raios na nadadeira dorsal e 19 raios na nadadeira anal em machos, 28-31 raios na nadadeira caudal, 33-36 escamas na série longitudinal, 3+10 rastros branquiais no primeiro arco branquial, ausência de dentes no segundo faringobranquial, ausência de órgãos de contato nas escamas do flanco, 34-35 vértebras, ausência de dentes no vomer e presença de séries transversais de escamas na base da nadadeira anal.
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