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Andrade,Breno Neves; Langeani,Francisco. |
Neoplecostomus jaguari, a new neoplecostomine, is described based on material from the rio Jaguari, rio Tietê basin, southeastern Brazil. The new species differs from all congeners by having a conspicuous sexual dimorphism: females with 30-38 teeth in the dentary and 30-39 in the premaxilla, and males with 13-18 and 14-20 teeth, respectively (vs. number of teeth in the dentary and premaxilla approximately equivalent in all other species, except for N. langeanii in the premaxilla); females with larger mandibullary width, 18.5-21.6% HL, males 11.8-15.7% HL (vs.mandibullary width in males and females approximately equivalent); females with teeth longer and thin, males with teeth shorter and robust (vs. teeth similar in other species, except for N. langeaniiin... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cascudos; Neoplecostomus paranensis; Neotropical region; Ostariophysi; Systematics. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400675 |
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Pereira,Edson H. L; A,Pablo Lehmann; Reis,Roberto E.. |
Pareiorhaphis ruschii, new species, is the first neoplecostomine catfish of the genus Pareiorhaphis described based on material from tributaries to the rio Piraquê-Açu and rio Reis Magos, both small coastal drainages in the State of Espírito Santo, eastern Brazil. The new species is promptly diagnosed from all its congeners by features related to the morphology of the lower lip margin, number of preadipose azygous plates, size and shape of the pectoral-fin spine, and caudal-fin skeleton. Additionally, sexual dimorphism of the new species is marked by hypertrophied odontodes on the lateral margins of head slightly directed forward in adult males. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cascudos; Neotropical; Rio Piraquê-Açu; Rio Reis Magos; Taxonomy. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300006 |
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