A new pale-spotted species of Hypostomus Lacépède (Siluriformes: Loricariidae) from the rio Tocantins and rio Xingu basins in central Brazil

Zawadzki, Cláudio Henrique; Birindelli, José L. O.; Lima, Flávio C. T.

doi:10.1590/s1679-62252008000300012

Cited by 24 publications

(17 citation statements)

References 13 publications

(20 reference statements)

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“…Zawadzki et al (2008) reported it in some few preserved specimens of H. faveolus Zawadzki, Birindelli & Lima bearing two to five oblique dark saddles on trunk. The stress coloration is an independent color trait controlled by some unknown genetic-hormonal Many species have been described recently in the rio Cuiabá basin.…”

Section: Discussionmentioning

confidence: 96%

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A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin

2010

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A new Hypostomus species is described from the rio Cuiabá, upper rio Paraguay basin, Mato Grosso State, Brazil. The new species is distinguished from all other Hypostomus species, with exception of young specimens of H. latifrons, by the presence of a wide dark transverse bars on laterals of body and fins; and conspicuous dark vermiculations on abdominal region. From H. latifrons it differs by having just one pre-dorsal plate surrounding supraoccipital bone and by the maintenance of the dark saddles in adults. Added to the other fish species recently described from the upper rio Paraguay basin, this work helps to highlight that the region still functions as a potential source of new species.Uma espécie nova de Hypostomus é descrita do rio Cuiabá, bacia do alto rio Paraguai, Estado do Mato Grosso, Brasil. A espécie nova é diagnosticada de todas as outras congêneres, com exceção de H. latifrons, pela presença de amplas barras escuras transversais nas laterais do corpo e nadadeiras, e pelas conspícuas vermiculações escuras na região abdominal. De H. latifrons ela difere por ter somente uma placa pré-dorsal margeando o osso supraoccipital e pela manutenção das barras escuras transversais nos adultos. Somada a outras espécies de peixes recentemente descritas na bacia do alto rio Paraguai, este trabalho demonstra que a região ainda funciona como uma fonte potencial de espécies novas.

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Section: Discussionmentioning

confidence: 96%

“…The genus Hypostomus is one of the most species-rich genus of the order Siluriformes, currently having 125 species (Weber, 2003;Zawadzki et al, 2008;Hollanda Carvalho et al, 2010). Currently, nine nominal species were described based on specimens collected in the rio Paraguay basin.…”

Section: Introductionmentioning

confidence: 99%

A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin

2010

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“…Hypostomus La Cépède is the most speciesrich genus within the family Loricariidae, comprising 140 valid species according to Armbruster (2004), Armbruster et al (2007), and recent descriptions (Zawadzki et al, 2008a(Zawadzki et al, , 2008bCarvalho et al, 2010), occurring widely throughout the neotropics. The high intraspecific variation in its morphology results in many nominal species with unclear status in Hypostomus (Weber, 2003;Birindelli et al, 2007;Jerep et al, 2007).…”

Section: T He Genusmentioning

confidence: 99%

A New Species of Hypostomus (Siluriformes: Loricariidae) from the Upper Rio Paraguay Basin, Brazil

Martins

Marinho

Langeani

et al. 2012

Copeia

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A new small Loricariidae, Hypostomus careopinnatus, is described from the Rio Taquari drainage, upper Rio Paraguay basin, Mato Grosso, Brazil. The new species can be easily distinguished from all congeners, except Hypostomus levis, by the absence of adipose fin. Hypostomus careopinnatus is distinguished from H. levis mainly by the presence of slender bifid teeth, with mesial cusp large and rounded, and lateral cusp small and pointed (vs. spoon-shaped teeth). The new species described herein completely lacks the adipose fin and also lacks the median pre-adipose plates in almost all specimens examined. The absence of adipose fin is probably an independent acquisition for Hypostomus careopinnatus and Hypostomus levis.Um pequeno novo Loricariidae, Hypostomus careopinnatus, é descrito das drenagens do Rio Taquari, bacia do alto Rio Paraguai, Mato Grosso, Brasil. A nova espé cie distingue-se facilmente de todas as demais congêneres, exceto de Hypostomus levis, pela ausência da nadadeira adiposa. Hypostomus careopinnatus distingue-se de H. levis pela presença de dentes delgados e bicuspidados, com a cú spide mesial maior e arredondada, e a cú spide lateral menor e afilada (vs. dentes em forma de colher). A nova espé cie aqui descrita não possui nadadeira adiposa, e també m perdeu as placas medianas pré -adiposa, na maioria dos exemplares examinados. A ausência da nadadeira adiposa é provavelmente uma aquisição independente para Hypostomus careopinnatus e Hypostomus levis.

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“…Both species are from the rio Vermelho, a tributary to upper stretches of the rio Araguaia (Eigenmann & Eigenmann, 1880;Regan, 1904). More recently, Hypostomus faveolus Zawadzki, Birindelli & Lima, 2008, a honeycomb-spotted species was described from the rio AraguaiaTocantins and rio Xingu basins (Zawadzki et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the rio Tocantins-Araguaia basin, Brazil

2013

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Hypostomus delimai is described from the rio Tocantins, Tocantins State, and from the rio Araguaia, Pará, and Tocantins States, Brazil. The new species is distinguished from all other Hypostomus species, except from H. carinatus, H. hoplonites, and H. watwata, by the presence of five to eight (mode seven) predorsal plates limiting posterior border of the supraoccipital bone (vs. one to three plates). It can be distinguished from H. carinatus, H. hoplonites, and H. watwata by having pale spots over darker background on body and fins (vs. dark spots over lighter background). The species was only found in the middle stretches of the rio Tocantins-Araguaia basin. The first collection of specimens assigned to the new species was done in the rio Tocantins before the construction of the Tucuruí dam. Recently additional material was collected in the rio Araguaia, in a habitat that soon will be flooded for the construction of the Santa Isabel hydroelectric power station.Hypostomus delimai é descrita do rio Tocantins no estado do Tocantins e do rio Araguaia, entre os estados do Pará e Tocantins, Brasil. A espécie nova é diagnosticada das demais espécies de Hypostomus, com exceção de H. carinatus, H. hoplonites e H. watwata por possuir de cinco a oito (moda sete) placas pré-dorsais margeando a borda posterior do supraoccipital (vs. uma ou até três placas). Difere de H. carinatus, H. hoplonites, e H. watwata por apresentar pintas claras sobre o corpo e nadadeiras (vs. pintas escuras sobre fundo claro). A espécie nova foi encontrada somente no trecho médio da bacia do rio Tocantins-Araguaia. Os primeiros registros da espécie nova foram feitos no rio Tocantins antes da construção da barragem de Tucuruí. Recentemente, material adicional foi coletado no rio Araguaia, em um habitat que será brevemente inundado pela construção da hidrelétrica de Santa Isabel.

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A new pale-spotted species of Hypostomus Lacépède (Siluriformes: Loricariidae) from the rio Tocantins and rio Xingu basins in central Brazil

Cited by 24 publications

References 13 publications

A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin

A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin

A New Species of Hypostomus (Siluriformes: Loricariidae) from the Upper Rio Paraguay Basin, Brazil

A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the rio Tocantins-Araguaia basin, Brazil

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