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| Registros recuperados: 2.235 | |
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| Ballen,Gustavo A.. |
| Chaetostoma formosae sp. nov. is described from piedmont tributaries of the upper río Meta on the Cordillera Oriental in Colombia. The new species is distinguished from its congeners by the presence of an elongate unbranched anal-fin ray with two posterior dermal ridges in mature males, the presence of strongly recurved cheek odontodes, the presence of a parieto-supraoccipital dermal keel, the posterior margin of the pelvic-fin strongly projected and angulate in shape in mature males, and by details of coloration. The new species belongs to an informal monophyletic group herein called the Chaetostoma anale species group, along with two additional species, C. anale and C. jegui, from Colombia and Brazil respectively, based on an apomorphic modification of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Systematics; Ancistrini; Andes; Sexual dimorphism; Taxonomy. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492011002600001 |
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| Zanata,Angela M.; Camelier,Priscila. |
| Characidium samurai, a species of the family Crenuchidae apparently endemic to rio das Almas and rio Vermelho basins, Bahia, Brazil, is described. The new species is readily distinguishable from its congeners, except C. lanei, by having a dark lateral band along the head and body that is particularly broad from the rear of the head to the end of the caudal peduncle (1.5 or 2 scales wide) and by the absence of dark bars or blotches on the ventral half of the body. Characidium samurai differs from C. laneiby having the lateral band with straight borders overall (vs.lateral band with somewhat irregular borders due to blotches extending dorsally or ventrally), anal fin ii,7-8 (vs. ii,6), and 4 horizontal scale rows above the lateral line and 4 below (vs. 5/3).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Characidiinae; Characidium bahiense; Freshwater fish; Neotropical region; Taxonomy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200333 |
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| Pinna,Mario de; Abrahão,Vitor; Reis,Vinicius; Zanata,Angela. |
| ABSTRACT A new species of the Copionodontinae genus Copionodon is described from the riacho do Mosquito, tributary to rio Santo Antônio, rio Paraguaçu basin in the Diamantina Plateau, Bahia State, northeastern Brazil. This species represents the northernmost occurrence of the subfamily yet known and is a relictual population, apparently restricted to an underground sector of the stream and its immediate downstream exit. The new species can be readily recognized by the combination of the presence of opercular odontodes, the mostly uniform coloration of the body, and the lack of a free orbital rim. Despite several troglomorphic traits shared between the new species and Glaphyropoma spinosum, the two species are not closest relatives and all such similarities... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chapada Diamantina; Endemism; Rio Paraguaçu; Systematics; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400214 |
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| Espíndola,Vinicius C.; Spencer,Marcelo R.S.; Rocha,Leandro R.; Britto,Marcelo R.. |
| A new species of Corydoras is described from tributaries of the rio Arinos, rio Teles Pires and rio Preto, all in the rio Tapajós basin. The new species is a member of a group that includes 36 species with spots on the body. Within this group, the new species can be readily distinguished by having a smaller dorsal-fin spine than the first three subsequent soft dorsal-fin rays; pectoral, pelvic and anal fins hyaline; dorsal-fin interradial membrane hyaline; rounded spots on trunk restricted to dorsolateral body plates and dorsal portion of ventrolateral body plates, not reaching the base of pelvic and anal fins. The new species can be further distinguished from Corydoras xinguensis by having spots with diffuse edges, and from all other species of spotted... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corydoradinae; Neotropical; Phylogeny; Taxonomy; Biodiversity. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492014000300001 |
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| Onody,Helena Carolina; Penteado-Dias,Angélica Maria. |
| ABSTRACT Cryptophion Viereck, 1913 is a small Neotropical genus of Campopleginae, with seven described species, two recorded from Brazil. In this paper, a new species from the Atlantic Forest of southeastern Brazil is described and illustrated. In addition, a key to the Brazilian species is provided. Cryptophion atlanticus sp. nov. (holotype female deposited in DCBU: Brazil, São Paulo, São Luiz do Paraitinga, Parque Estadual da Serra do Mar) is diagnosed by mesoscutum more or less uniformly punctate, except the notaular region with coarser and irregular rugae, scutellum bearing irregular lateral longitudinal rugae; forewing with areolet not distinctly petiolate above and hind tarsal claw pectinate, but with a large space in the middle, and distinctly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campopleginae; Insecta; Neotropical region; Parasitoid; Taxonomy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000103001 |
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| Haseyama,Kirstern L.F.; Carvalho,Claudio J.B. de. |
| We describe a new species of Cyrtoneuropsis Malloch, 1925 (Diptera, Muscidae) from Brazil. The new species is included in a previously published key to species. Additionally, we review a previously published matrix to Cyrtoneurina Giglio-Tos, 1893 and Cyrtoneuropsis. A total of 52 character states were modified and the new species was added to it. The modified matrix was analyzed under equal and implied weights. In all topologies, Cyrtoneuropsis spiloptera (Wiedemann, 1830) came up as the sister group of the new species. The monophyly of Cyrtoneurina and Cyrtoneuropsis were recovered, but the relationships among their species, in our data, differ from those obtained in the past. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morphological characters; Neotropical; Species key; Taxonomy. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000600006 |
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| Valsko,Jefferson José; Krahl,Amauri Herbert; Holanda,Ana Sofia Sousa de; Zartman,Charles Eugene. |
| Dichaea is the largest genus of the subtribe Zygopetalinae and holds it's the highest species diversity in South America. Therefore, this study aims to describe a new species of Dichaea, which occurs in northern Brazil, Dichaea bragae Valsko, Krahl & Holanda. The new species was collected in the north of Manaus in an area of ombrophilous forest and flowered when cultivated. The epithet honors Dr. Pedro Ivo Soares Braga (in memoriam), orchidologist who conducted several studies in the Brazilian Amazon. This new species show a affinity with Dichaea tenuis C. Schweinf., however it is differentiated both vegetatively and on labellum morphology. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; Amazonas; Epiphyte; Dense ombrophilous forest. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000300014 |
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| Registros recuperados: 2.235 | |
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