scholarly journals A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
Alessandro Gasparetto Bifi ◽  
Renildo Ribeiro de Oliveira ◽  
Lúcia Rapp Py-Daniel
Keyword(s):  
New Species ◽  
Taxonomic Status ◽  
Color Pattern ◽  
Unique Color ◽  
Vertical Bars ◽  
Amazonas State ◽  
A New Species ◽  
Rio Madeira

ABSTRACT During the Mosaico do Apuí expedition in 2006, a new species of Ancistrus was found in the rio Sucunduri, a large tributary of the rio Madeira basin in south Amazonas State. The new species has a unique color pattern for the genus and is distinguished by the presence of alternate light and dark vertical bars on the trunk. Other Ancistrini genera have species with a similar color pattern, but the new species is clearly distinguished by a lack of plates on the snout and presence of fleshy tentacles on the snout as in all Ancistrus representatives. We also provide comments on the taxonomic status of the A. bolivianus, A. heterorhynchus and A. marcapatae.

scholarly journals A new species of the Hypostomus cochliodongroup (Siluriformes: Loricariidae) from the rio Aripuanã basin in Brazil

2014 ◽  
Vol 12 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Cláudio H. Zawadzki ◽  
Pedro Hollanda Carvalho
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Proximal Region ◽  
The Body ◽  
Dorsal Region ◽  
Caudal Peduncle ◽  
Mato Grosso ◽  
Unique Color ◽  
A New Species ◽  
Rio Madeira

A new species of Hypostomus, H. dardanelos, is described from the rio Aripuanã basin, a southern tributary to the rio Madeira, in northern Mato Grosso State, Brazil. The new species is assigned to the Hypostomus cochliodon group by the possession of few teeth, spoon-shaped teeth, angle between dentaries usually less than 80°, and by the absence of a notch between hyomandibular and the metapterygoid. The new species can be diagnosed from its congeners by its unique color pattern of yellowish-brown ground color covered by well-defined dark spots of relatively equal size, evenly spaced and moderately set along the dorsal region of the body and fins, except on the ventrolateral region of the caudal peduncle and proximal region of anal and caudal fins, which are devoid of spots. The new species is further diagnosed by having teeth with very small lateral cusp, fused to the mesial one and almost imperceptible; by the absence of medial buccal papillae, and by nuptial odontodes all along the body (odontodes more pronounced in some few larger specimens).

scholarly journals A new species of Characidium (Characiformes: Crenuchidae) from the Chapada dos Veadeiros, Goiás, Brazil

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Marcelo R. S. Melo ◽  
Bárbara B. Bouquerel ◽  
Flávia T. Masumoto ◽  
Rayane S. França ◽  
André L. Netto-Ferreira
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Dorsal Midline ◽  
Single Row ◽  
The Third ◽  
Dorsal Fin ◽  
Unique Color ◽  
Fin Ray ◽  
Vertical Bars ◽  
A New Species

Abstract A new species of Characidium is described from the tributaries of the rio Tocantinzinho, rio Tocantins basin, located in the southern portion of the Chapada dos Veadeiros, at about 1,200 meters of elevation, Goiás, Brazil. The new species can be diagnosed by an unusual combination of two apomorphic features present in distinct clades of Characidium, the presence of a scaleless isthmus in allied to with a single row of dentary teeth. Additionally, the new species has a unique color pattern of inconspicuous vertical bars disconnected from the dorsal midline, forming seven to nine square blotches along body sides, and the presence of a dark saddle-shaped mark at the dorsal-fin base. Osteologically, it can be diagnosed by having the first and second anal-fin proximal radials fused and contacting the third hemal spine, which is branched. The new species also has a peculiar, unusual variation of fin-ray counts among its congeners.

scholarly journals A new species of Ituglanis (Siluriformes: Trichomycteridae) from the rio Uruguai basin, southern Brazil

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Juliano Ferrer ◽  
Laura M. Donin
Keyword(s):  
New Species ◽  
Outer Layer ◽  
Mitochondrial Gene ◽  
Color Pattern ◽  
The Body ◽  
Southern Brazil ◽  
Unique Color ◽  
Pampa Biome ◽  
Genetic Sequences ◽  
A New Species

ABSTRACT A new species of Ituglanis associated to the grasslands of the Pampa biome is described from the rio Uruguai basin, southern Brazil. The new species is distinguished from its congeners by the low number of ribs and by a unique color pattern composed of an outer layer with scattered round black blotches equivalent in size to the eye circumference over a reddish brown background on the lateral surface of the body. We provide the genetic sequences of the mitochondrial gene Cytochrome c Oxydase subunit I (COI) for three of the paratypes and discuss aspects about the recent discovery of the new species.

scholarly journals A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the rio Madeira and rio Paraguai basins, with a redescription of H. lunatus

2014 ◽  
Vol 12 (2) ◽  
pp. 265-279 ◽  
Author(s):  
Rafaela P. Ota ◽  
Flávio C. T. Lima ◽  
Carla S. Pavanelli
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Monophyletic Group ◽  
Gill Rakers ◽  
Horizontal Stripe ◽  
Mato Grosso ◽  
Formal Restriction ◽  
A New Species ◽  
Subjective Synonym ◽  
Rio Madeira

A new Hemigrammusis described from the rio Paraguai and rio Madeira basins, Mato Grosso and Rondônia States, Brazil. The new species is characterized by possessing a wide dark horizontal stripe across the eye, a vertically elongated humeral blotch, and 4-5 gill-rakers on upper branch and 9-10 on lower. The new species can be easily diagnosed from H. lunatus, the sympatric and morphologically most similar congener, by the shape of humeral blotch and the number of gill rakers. Data of the type material of both Hemigrammus lunatus and H. maxillaris, as well as extensive examination of specimens, allowed us to conclude that H. maxillarisis a junior subjective synonym of H. lunatus. A redescription of H. lunatus, as well as a formal restriction of its type locality, is provided. A putative monophyletic group within Hemigrammus, composed by H. barrigonae, Hemigrammus lunatus, H. machadoi new species, and H. ulreyi, named Hemigrammus lunatus group, is proposed based on overall body morphology and color pattern. Additionally, a discussion on the biogeographical relationships between the rio Paraguai and rio Guaporé basins is provided.

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.

A new species of Hintonelmis Spangler (Coleoptera: Elmidae: Elminae) from Central Amazonia, Brazil

Zootaxa ◽  
2010 ◽  
Vol 2353 (1) ◽  
pp. 43 ◽  
Author(s):  
ANDRÉ S. FERNANDES ◽  
MARIA INÊS S. PASSOS ◽  
NEUSA HAMADA
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Color Pattern ◽  
Central Amazonia ◽  
Amazonas State ◽  
A New Species

Hintonelmis anamariae sp. nov. is described and illustrated based on adult specimens collected in Presidente Figueiredo Municipality, Amazonas State, Brazil. This species can be distinguished from all other known Hintonelmis species by its dorsal color pattern and the morphology of the male genitalia.

A new species of the Liolaemus darwinii group (Iguania: Liolaemidae) from Salta Province, Argentina

Zootaxa ◽  
2011 ◽  
Vol 2968 (1) ◽  
pp. 26 ◽  
Author(s):  
CRISTIAN SIMÓN ABDALA ◽  
ANDRÉS SEBASTIÁN QUINTEROS ◽  
FEDERICO ARIAS ◽  
SABRINA PORTELLI ◽  
ANTONIO PALAVECINO
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Sexual Dichromatism ◽  
New Taxon ◽  
Northwestern Argentina ◽  
Unique Color ◽  
Males And Females ◽  
A New Species

We describe a new species of the iguanian genus Liolaemus of Northwestern Argentina in Salta Province. This new lizard is a member of the L. boulengeri group, and within this group it is a member of the L. darwinii subgroup. With the addition of the species described here, the L. darwinii group now contains 19 species. Like most of the members of this group, the new taxon exhibits sexual dichromatism, showing a unique color pattern in males and females. The color pattern is characterized by the presence of a pre-scapular spot and lateral black stripes, unique within the L. darwinii group. Liolaemus diaguita sp nov inhabits a region where bushes are the predominant vegetation, in Quebrada de Las Conchas, in Guachipas Department, Salta Province, which has an elevation between 1200–2500 m.

Peckoltia compta, a new species of catfish from the Brazilian Amazon, rio Tapajos basin (Siluriformes: Loricariidae)

Zootaxa ◽  
2010 ◽  
Vol 2534 (1) ◽  
pp. 48 ◽  
Author(s):  
RENILDO RIBEIRO DE OLIVEIRA ◽  
JANSEN ZUANON ◽  
LUCIA RAPP PY-DANIEL ◽  
MARCELO SALLES ROCHA
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Anterior Margin ◽  
Taxonomic Status ◽  
Brazilian Amazon ◽  
Color Pattern ◽  
Valid Species ◽  
Nominal Species ◽  
Dark Stripe ◽  
A New Species

The loricariid genus Peckoltia currently encompasses 13 valid species ranging throughout the Amazon basin in Brazil, Venezuela, Colombia, Peru, and Guyanas. Peckoltia is included in the tribe Ancistrini, but its relationships with other taxa within the tribe are not well established. In this paper we describe a new species of Peckoltia from the rio Tapajos drainage, Para State, Brazil. Peckoltia compta, new species, is characterized by a bold color pattern consisting of large dark transversal bars on body and thick longitudinal dark stripes on snout and head. The new species is most similar in color pattern to P. vittata but can be distinguished from all its congeners by the presence of a pale line inside each dark stripe running from the snout tip to anterior margin of eyes (vs. absence of such clear lines and a mottled appearance in P. vittata, and a mix of vermiculations and spots on the head of the remaining congeners). A brief discussion on the taxonomic status of the nominal species Peckoltia vittata is also presented.

Opistognathus pardus, a new species of jawfish (Teleostei: Opistognathidae) from the Western Indian Ocean

Zootaxa ◽  
2012 ◽  
Vol 3523 (1) ◽  
pp. 20
Author(s):  
WILLIAM F. SMITH-VANIZ ◽  
K. K. BINEESH ◽  
K. V. AKHILESH
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
Color Pattern ◽  
Single Specimen ◽  
Unique Color ◽  
Fin Ray ◽  
Fourth Species ◽  
A New Species ◽  
Pelvic Fin

A new species of jawfish, Opistognathus pardus, is described based on a single specimen, 98.8 mm SL, recently collectedfrom the Western Indian Ocean off Quilon (Kerala), India. The combination of a rigid maxilla without flexible lamina pos-teriorly, a unique color pattern in which most of the head is covered with small, irregular-shaped, dark spots, dorsal-finrays XI, 11, and the outermost segmented pelvic-fin ray tightly bound to adjacent ray, with the interradial membrane notincised distally distinguishes the new species from other congeners. This is the fourth species of Opistognathus known from the coast of India or Sri Lanka. A range extension for O. macrolepis is also reported.

A new species of annual fish, Hypsolebias tocantinensis sp.n. (Cyprinodontiformes:Rivulidae) from the rio Tocantins basin, northeastern Brazil

Zootaxa ◽  
2012 ◽  
Vol 3527 (1) ◽  
pp. 63 ◽  
Author(s):  
DALTON TAVARES BRESSANE NIELSEN ◽  
JOÃO CARLOS CRUZ ◽  
ARSÊNIO CALDEIRA BAPTISTA JUNIOR
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Species Group ◽  
Northeastern Brazil ◽  
Annual Fish ◽  
Temporary Pool ◽  
Black Spots ◽  
First Occurrence ◽  
Vertical Bars ◽  
A New Species

Hypsolebias tocantinensis n. sp. is described from a temporary pool located in the rio Tocantins basin, Maranhão stateBrazil. Hypsolebias tocantinensis belongs the H. flammeus species-group. It is the first occurrence of genus Hypsolebiasin Maranhão state. This new species differs from all other species of that group, except Hypsolebias flammeus (Costa,1989), Hypsolebias multiradiatus (Costa &Brasil, 1994) and Hypsolebias brunoi (Costa, 2003), by male color pattern andby the presence of a metallic blue sheen surrounding the black spots in the female. It differs from H. flammeus, H. multi-radiatus and H. brunoi by the shape of the dorsal and anal fins (rounded vs. pointed) and by the orientation of the reddishbrown bars in males (diagonal vs. vertical). Hypsolebias tocantinensis differs from all other Hypsolebias by the presenceof, in females, irregular light brown stains on the anal fins and by the pattern of the metallic blue sheen around the blackspots (completely surrounding the black spots while in congeners this blue sheen is either absent or present in vertical bars).

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