scholarly journals Otocinclus cocama, a new uniquely colored loricariid catfish from Peru (Teleostei: Siluriformes), with comments on the impact of taxonomic revisions to the discovery of new taxa

2004 ◽  
Vol 2 (3) ◽  
pp. 109-115 ◽  
Author(s):  
Roberto E. Reis
Keyword(s):  
New Species ◽  
New Taxa ◽  
Lateral Line ◽  
Phylogenetic Relationships ◽  
Color Pattern ◽  
Dorsal Midline ◽  
Northern Peru ◽  
Distinct Color ◽  
The Impact ◽  
Ventral Border

A new, uniquely colored species of the loricariid catfish genus Otocinclus, O. cocama is described from a tributary to the lower río Ucayali in northern Peru. The new species is distinguished from other Otocinclus species by two putatively autapomorphic features, the distinct color pattern, consisting of vertically elongated blotches spanning from the dorsal midline to the ventral border of flanks, and by a complete lateral line. The phylogenetic relationships of the new species are investigated and it is apparently more closely related to a clade formed by O. huaorani, O. bororo, O. mariae, and O. mura. Comments on the impact of taxonomic revisions for the discovery and description of previously undetected biodiversity are also presented.

A new species of the Pristimantis orestes Group (Anura: Leptodactylidae) from the Cordillera Occidental in northern Peru

Zootaxa ◽  
2007 ◽  
Vol 1621 (1) ◽  
pp. 45-54
Author(s):  
EDGAR LEHR ◽  
GUNTHER KÖHLER
Keyword(s):  
New Species ◽  
Adult Female ◽  
Cloud Forest ◽  
Color Pattern ◽  
Diagnostic Characters ◽  
Type Series ◽  
Northern Peru ◽  
Distinct Color ◽  
A New Species

We describe a new species of the Pristimantis orestes Group from cloud forest at 1700–1800 m in the Cordillera Occidental in northern Peru (Departamento de Cajamarca). The type series comprises one adult female and three males. The new species has a maximum snout vent-length of 29.4 mm, a long snout, dentigerous processes of vomers present, discs on outer fingers broadly expanded, males that have vocal slits present and nuptial pads absent, and a distinct color pattern consisting of tan blotches and spots on a brown venter, anterior and posterior surfaces of the thighs, concealed surfaces of the shanks, and axilla and groin, dark brown with tan blotches and spots. The Pristimantis orestes Group contains 12 species, of which nine occur in the Cordillera Occidental in northern Peru. Nuptial pads as diagnostic characters in Pristimantis are briefly discussed.

scholarly journals A new Silver Dollar species of Metynnis Cope, 1878 (Characiformes: Serrasalmidae) from Northwestern Brazil and Southern Venezuela

2016 ◽  
Vol 14 (4) ◽  
Author(s):  
Rafaela Priscila Ota ◽  
◽  
Lúcia Helena Rapp Py-Daniel ◽  
Michel Jégu ◽  
◽  
...  
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Limb ◽  
Body Shape ◽  
Color Pattern ◽  
High Concentration ◽  
Gill Rakers ◽  
Rio Negro ◽  
Silver Dollar ◽  
Rio Madeira

ABSTRACT A new Metynnis is described from the rio Negro in Brazil and Venezuela, and from black- or clearwater tributaries in Brazil including the rios Parauari, Uatumã, Trombetas, and Sucunduri (the latter belonging to the rio Madeira basin). The new species can be distinguished readily from all congeners by having a high concentration of dark chromatophores on the lateral line scales. It can be further distinguished by the combination of head length 24.3-27.5% of SL, 13-18 gill-rakers on upper limb and 16-24 gill-rakers on lower limb. The new species is most similar to and likely most closely related to Metynnis hypsauchen . These two species share a similar color pattern, body shape and sexual dimorphism of the anal fin. However, they differ in that M. hypsauchen has a lightly pigmented lateral line. The new species is also distinguished from M. hypsauchen by having 56-65 predorsal scales and 90-104 lateral line scales (vs . 36-54, and 65-82, respectively). A detailed osteological description of the new species is provided.

scholarly journals New species of the genus Leporinus Agassiz (Characiformes: Anostomidae) from the rio Curuá, rio Xingu basin, Serra do Cachimbo, Brazil, with comments on Leporinus reticulatus

2009 ◽  
Vol 7 (1) ◽  
pp. 1-9 ◽  
Author(s):  
José L. O. Birindelli ◽  
Heraldo A. Britski
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
The Body ◽  
Dental Formula ◽  
A New Species

A new species of Leporinus Agassiz is described from the rio Curuá, a tributary of the rio Iriri, rio Xingu basin, Serra do Cachimbo, Pará State, Brazil. The new species is diagnosed by the color pattern, which consists of eight to ten midlateral round dark blotches plus 20 to 40 smaller ones scattered over the body, dental formula 3/4, subinferior to inferior mouth, 37 to 38 lateral line scales, 4/3-4 transversal series of scales, and 12 circumpeduncular scale series. The new species most closely resembles L. octomaculatus and L. reticulatus from the upper Tapajós basin, and L. marcgravii and L. microphthalmus from the rio São Francisco and the rio Paranaíba, respectively. Based on recently collected specimens, L. reticulatus is re-diagnosed as having an allometric elongation of the snout.

scholarly journals A new species of Microglanis(Siluriformes: Pseudopimelodidae) from the upper rio Tocantins basin, Goiás State, Central Brazil

2014 ◽  
Vol 12 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Oscar Akio Shibatta
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Posterior Margin ◽  
Color Pattern ◽  
Occipital Region ◽  
Caudal Fin ◽  
Central Brazil ◽  
Unique Color ◽  
A New Species ◽  
Pelvic Fin

A new species of Microglanis is described from the upper rio Tocantins basin, Barro Alto, Goiás State, Brazil. This species is distinguished from the others by presenting a unique color pattern, consisting of round spots in the flank between the larger dark brown blotches. Moreover, it can be distinguished by the combination of the following features: caudal fin emarginate, the upper lobe slightly larger than the lower, lateral line relatively long, reaching vertical through posterior margin of the pelvic fin, and light stripe on supra-occipital region absent or very narrow and with irregular shape.

Nemacheilus marang, a new loach (Teleostei: Nemacheilidae) from Sangkulirang karst, eastern Borneo

Zootaxa ◽  
2010 ◽  
Vol 2557 (1) ◽  
pp. 39 ◽  
Author(s):  
RENNY KURNIA HADIATY ◽  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Colour Pattern ◽  
Dorsal Midline ◽  
Karst Formation

Nemacheilus marang, new species, is described from Sungai Marang, Bengalon drainage, in the Sangkulirang peninsula karst formation, Borneo, Indonesia. It is distinguished from all other species of Nemacheilus of Borneo among others by its unique colour pattern made of 10–18 dark brown bars on the flank, extending from the dorsal midline to just below the lateral line, continuous across back, not or only slightly wider on back and where crossing the midlateral stripe; and having the bars usually regular, straight, and of width less than half that of the interspaces.

The Neotropical sharpshooter genus Ruppeliana Young (Insecta: Hemiptera: Cicadellidae): four new species, key to males, and new synonyms

Zootaxa ◽  
2017 ◽  
Vol 4329 (5) ◽  
pp. 436
Author(s):  
RODNEY R. CAVICHIOLI ◽  
RACHEL A. CARVALHO ◽  
GABRIEL MEJDALANI
Keyword(s):  
New Species ◽  
New Taxa ◽  
Male Genitalia ◽  
Rio De Janeiro ◽  
Color Pattern ◽  
The Other ◽  
Key To Species ◽  
New Synonyms ◽  
Minas Gerais State ◽  
Janeiro State

Four new Brazilian species of Ruppeliana are described and illustrated: R. barbarensis sp. nov., R. grossii sp. nov., R. longiphallus sp. nov., and R. serrana sp. nov., the first from Minas Gerais State and the other three from Rio de Janeiro State. The new taxa can be easily distinguished from other Ruppeliana species by their color pattern and male genitalia morphology. Ruppeliana coronulifera (Stål, 1862) and R. taschenbergi (Berg, 1899) are synonymized with R. signiceps (Stål, 1862). Additionally, a diagnosis of the genus and a key to species are provided. 

scholarly journals A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from Río Caura, Venezuela

Zootaxa ◽  
2007 ◽  
Vol 1610 (1) ◽  
pp. 53-59 ◽  
Author(s):  
RICARDO C. BENINE ◽  
GUILHERME A.M. LOPES
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Dorsal Fin ◽  
Pattern Number ◽  
Fin Length ◽  
A New Species

A new characid species, Hemigrammus taphorni, is described from the Río Caura drainage, Venezuela. The new species is distinguished from its congeners by characters related to its color pattern, number of scale rows below the lateral line, teeth morphology, and dorsal-fin length. A brief discussion about the putative relationships of H. taphorni is provided.

scholarly journals Integrative taxonomy reveals a new species of pacu (Characiformes: Serrasalmidae: Myloplus) from the Brazilian Amazon

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Rafaela Priscila Ota ◽  
Valéria Nogueira Machado ◽  
Marcelo C. Andrade ◽  
Rupert A. Collins ◽  
Izeni Pires Farias ◽  
...  
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Amazon Basin ◽  
Morphological Diversity ◽  
Common Species ◽  
Color Pattern ◽  
Integrative Taxonomy ◽  
Striking Similarity ◽  
Species Discovery ◽  
A New Species

ABSTRACT Pacus of the genus Myloplus represent a formidable taxonomic challenge, and particularly so for the case of M. asterias and M. rubripinnis, two widespread and common species that harbor considerable morphological diversity. Here we apply DNA barcoding and multiple species discovery methods to find candidate species in this complex group. We report on one well-supported lineage that is also morphologically and ecologically distinct. This lineage represents a new species that can be distinguished from congeners by the presence of dark chromatophores on lateral-line scales, which gives the appearance of a black lateral line. It can be further diagnosed by having 25-29 branched dorsal-fin rays (vs. 18-24), 89-114 perforated scales from the supracleithrum to the end of hypural plate (vs. 56-89), and 98-120 total lateral line scales (vs. 59-97). The new species is widely distributed in the Amazon basin, but seems to have a preference for black- and clearwater habitats. This ecological preference and black lateral line color pattern bears a striking similarity to the recently described silver dollar Metynnis melanogrammus.

scholarly journals A new species of Microglanis (Siluriformes: Pseudopimelodidae) from upper rio Paraná basin, Brazil

2005 ◽  
Vol 3 (4) ◽  
pp. 579-585 ◽  
Author(s):  
Oscar Akio Shibatta ◽  
Ricardo Cardoso Benine
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Morphometric Characters ◽  
Spine Morphology ◽  
Caudal Fin Shape ◽  
Pectoral Spine ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

Microglanis garavelloi, new species, collected in tributaries of rio Paranapanema and rio Tietê, is the first species of the genus described from upper rio Paraná basin. The new species can be distinguished from other species of Microglanis on morphometric characters, color pattern, caudal-fin shape, pectoral-spine morphology and lateral line development. Characters used specifically to distinguish M. garavelloi from M. cottoides (laguna dos Patos and rio Uruguay basins) and M. parahybae (rio Paraíba do Sul basin) include morphometrics, color pattern and pectoral-spine serration.

scholarly journals A new species of Boehlkea (Characiformes: Characidae: Stevardiinae) from the rio Japurá, Amazon basin, Brazil

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Isabel M. Soares ◽  
Vinicius A. Bertaco ◽  
Priscila Madoka M. Ito ◽  
Jansen Zuanon
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Amazon Basin ◽  
Color Pattern ◽  
Distal Portion ◽  
Lower Number ◽  
Dorsal Fin ◽  
Basal Half ◽  
A New Species ◽  
Pelvic Fin

ABSTRACT A new species of Boehlkea is described from rio Japurá, Amazon basin. The new species differs from B. fredcochui by the presence of a vertically elongate humeral spot (vs. absence), complete lateral line (vs. incomplete), four rows of scales below lateral line (vs. three), and lower number of branched anal-fin rays (17-21 vs. 22-25), and from B. orcesi by the higher number of maxillary teeth (13-14 vs. 5-12), greater head length (27.9-29.9% vs. 24.3-27.5% of SL), and by the color pattern (basal half of dorsal-fin, distal portion of pelvic-fin, lower caudal-fin lobe and anal-fin with black chromatophores vs. absence of black chromatophores in the fins).

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