scholarly journals A new species of Hyphessobrycon Durbin from northeastern Brazil: evidence from morphological data and DNA barcoding (Characiformes, Characidae)

ZooKeys ◽  
2018 ◽  
Vol 765 ◽  
pp. 79-101 ◽  
Author(s):  
Erick Cristofore Guimarães ◽  
Pâmella Silva De Brito ◽  
Leonardo Manir Feitosa ◽  
Luís Fernando Carvalho-Costa ◽  
Felipe Polivanov Ottoni

A new species of Hyphessobrycon is described for the upper Munim and Preguiças river basins, northeastern Brazil, supported by morphological and molecular species delimitation methods. This new species belongs to the Hyphessobrycon sensu stricto group, as it has the three main diagnostic character states of this assemblage: presence of a dark brown or black blotch on the dorsal fin, absence of a black midlateral stripe on its flank and the position of Weberian apparatus upward horizontal through dorsal margin of operculum. Our phylogenetic analysis also supported the allocation of the new species in this group; however, it was not possible to recover the species sister-group. Pristellamaxillaris and Moenkhausiahemigrammoides were recovered as the sister-clade of the Hyphessobrycon sensu stricto group.

2015 ◽  
Vol 13 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Jørgen G. Nielsen ◽  
Michael M. Mincarone ◽  
Fabio Di Dario

A new species of Barathronus (Ophidiiformes: Aphyonidae) is described from a single, mature male specimen (101 mm SL) bottom trawled on the continental slope of Rio Grande do Norte, northeastern Brazil, between 1,964 and 2,045 m depth. The new species is diagnosed among congeners by the following combination of characters: peritoneum transparent, deep-set eyes not visible, eight fangs on vomer, anal fin rays 69, predorsal length 42.0% SL, preanal length 49.5% SL, penis long, slender, and lacking a pair of lobes at its base, and presence of a ventral flexure of the anterior 2-3 vertebrae. Additionally, morphological data of three specimens of Barathronus bicolor collected in Brazilian waters are presented and compared with those from 51 specimens from the western Central Atlantic.


Zootaxa ◽  
2011 ◽  
Vol 2883 (1) ◽  
pp. 52 ◽  
Author(s):  
DAVID S. MCLEOD ◽  
STEPHANI J. HORNER ◽  
COLIN HUSTED ◽  
ANTHONY BARLEY ◽  
DJOKO ISKANDAR

A new species in the dicroglossine genus Limnonectes from West Sumatra, Indonesia, is described. Analysis of DNA sequence data from the mitochondrial 12S and 16S gene regions places the species within the Limnonectes kuhlii Complex and demonstrates it to be the sister taxon of Limnonectes kuhlii sensu stricto from Java. Both molecular and morphological data support the recognition of this lineage as a new species. Notably, the presence of a spinule-covered mental plate distinguishes Limnonectes sisikdagu sp. nov. from all other members of the L. kuhlii Complex. Additionally, pair-wise sequence divergence greater than 10% separate the new species from its sister taxon, L. kuhlii from Java.


Phytotaxa ◽  
2016 ◽  
Vol 257 (1) ◽  
pp. 89
Author(s):  
CHANG-LIN ZHAO ◽  
FENG XU ◽  
DONALD H. PFISTER

Truncospora wisconsinensis sp. nov., a new poroid wood-inhabiting species, is proposed based on a combination of molecular and morphological data. This species demonstrates a unique combination of characters including: annual habit; pileate basidiomata with a white pileus and pore surface; a dimitic hyphal system with non- to slightly dextrinoid, cyanophilous skeletal hyphae; and ellipsoid, truncate, slightly thick-walled, strongly dextrinoid basidiospores. Phylogenetic analyses using ITS and partial tef1-α support the position of this new species as a sister clade of T. ohiensis.


2013 ◽  
Vol 11 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Luiz F. C. Tencatt ◽  
Héctor S. Vera-Alcaraz ◽  
Marcelo R. Britto ◽  
Carla S. Pavanelli

A new species of Corydoras is described from the rio São Francisco basin in northeastern Brazil, Minas Gerais and Bahia States. The new species is distinguished from most of its congeners by the anterior portion of the infraorbital 1 very large, conspicuously expanded towards the anteroventral margin of the snout and almost entirely covering its lateral margin. Other characters that distinguish the new species are the infraorbital 2 slender on its dorsal tip, contacting only sphenotic and not compound pterotic; and the presence of two laterosensory canals on trunk. A phylogenetic analysis including the new species found it sister-group of C. flaveolus, and both species sister-group of C. paleatus. An identification key to the species of the rio São Francisco basin is also provided


2017 ◽  
Vol 15 (1) ◽  
Author(s):  
Lívia M. A. Oliveira ◽  
Angela M. Zanata ◽  
Luiz F. C. Tencatt ◽  
Marcelo R. Britto

ABSTRACT A new species of Aspidoras from the rio da Dona basin, a small coastal river drainage in Bahia State, is described herein. The new taxon differs from its congeners by presenting infraorbital 1 with well-developed ventral laminar expansion, nuchal plate nearly reaching to or sometimes contacting posterior process of parieto-supraoccipital, anterior tip of nuchal plate just posterior to dorsal margin of first dorsolateral body plate, and blotches on dorsal half of dorsolateral body plates and/or ventral half of ventrolateral body plates fused with midlateral series of blotches, forming three or four enlarged and oblique black blotches.


Zootaxa ◽  
2010 ◽  
Vol 2521 (1) ◽  
pp. 37 ◽  
Author(s):  
THIAGO RIBEIRO DE CARVALHO ◽  
ARIOVALDO ANTONIO GIARETTA ◽  
KÁTIA GOMES FACURE

We describe a new species based on two populations, from the State of Minas Gerais, using advertisement call and morphological data as diagnostic characters. Hypsiboas paranaiba sp. n. is distinguished from the large-sized species of the group by the absence of a white stripe on upper (H. lanciformis) or upper and lower lips (H. leucocheilus); from H. albopunctatus by the absence of distinct light spots on outer thighs and inguinal region; and from H. multifasciatus by reaching a smaller maximum size and presenting a head as long as wide. The new species occurs in the Cerrado biome of southeastern Brazil in the State of Minas Gerais, and central Brazil in the State of Goiás, whereas H. multifasciatus is restricted to the Amazon Forest domain, and possibly to forest domains in northeastern Brazil.


Zootaxa ◽  
2017 ◽  
Vol 4273 (2) ◽  
pp. 177 ◽  
Author(s):  
KLÁRA DÓZSA-FARKAS ◽  
TAMÁS FELFÖLDI

Five Achaeta species (A. affinis, A. bohemica sensu stricto, A. camerani, A. cf. danica, A. unibulba) and a new species, described here as A. tothi sp. n., were found during the investigation of the enchytraeid fauna of western Hungary (Őrség National Park and Kőszeg Mts.). Comparative morphological and molecular taxonomic investigations were performed with several individuals representing these six Achaeta species. A detailed description of the new species is given, and we also present some additional morphological data and photos about the other five Achaeta species. Such information could have importance in subsequent taxonomic studies and will aid the discrimination among the members of genus Achaeta. Furthermore, the obtained sequences could serve as references in forthcoming studies applying DNA-based taxon identification. 


2010 ◽  
Vol 70 (2) ◽  
pp. 381-386 ◽  
Author(s):  
VA. Taddei ◽  
BK. Lim

A new species of Chiroderma Peters, 1860 (Chiroptera, Phyllostomidae) from the State of Piauí in Northeastern Brazil is described based on mensural analysis, morphological data and geographical distribution. It is most similar morphologically to C. doriae Thomas, 1891 but differentiated by a smaller body size and by differences in cranial traits. In comparison to other members of the genus, the new species can be distinguished by a combination of characters, including size of the body, conspicuousness of facial and median dorsal stripes, ear length, and variation in cranial and dentition traits.


ZooKeys ◽  
2019 ◽  
Vol 864 ◽  
pp. 111-146
Author(s):  
Veronica L. Urgiles ◽  
Paul Székely ◽  
Diana Székely ◽  
Nicholas Christodoulides ◽  
Juan C. Sanchez-Nivicela ◽  
...  

In the genus Pristimantis, species are often combined into taxonomic units called species groups. The taxonomy of these groups is frequently inaccurate due to the absence of genetic data from type series and repeated misidentifications generated by high morphological resemblance between taxa. Here, we focus on the P.orestes species group, providing the first genetic assessment of P.orestes sensu stricto from individuals collected from the type locality, with a reviewed diagnosis and description of advertisement calls. We find that two lineages previously named P.orestes are genetically distinct and should be separated into two different species. Based on genetic and morphological data, we name one of these species P.cajanumasp. nov. This new species is morphologically distinct from other members of the group by having shagreen dorsal skin, evident dorsolateral folds, broader discs on toes and fingers and pale gray ventral coloration. Additionally, P.saturninoi is placed within the P.orestes species group based on genetic data from its type series. However, we find that one of its paratypes is genetically distinct and belongs to a clade containing a new species we name P.quintanaisp. nov. This new species is morphologically distinguished by lacking a tympanic membrane and vocal sacs in males, and by having expanded discs on toes and fingers, finely tuberculated dorsal skin and irregular white or cream spots in the groin and concealed surfaces of thighs. Our findings highlight the importance of providing genetic characterization and placement from the type series in taxonomic challenging groups, such as Pristimantis. We also suggest that the diversity of species within the P.orestes group will increase as more sampling is achieved in the southern Andes of Ecuador.


MycoKeys ◽  
2018 ◽  
Vol 38 ◽  
pp. 25-34 ◽  
Author(s):  
Memoona Khan ◽  
Abdul Nasir Khalid ◽  
H. Thorsten Lumbsch

We describe here a new species, Lecideaaptrootii, in Lecidea sensu stricto from Swat Valley, Pakistan. It is most similar to L.fuscoatra in having an areolate thallus and black, lecideine apothecia with a persistent margin. However, L.aptrootii can be readily distinguished by having smaller ascospores (average length 8-10 µm). In phylogenetic analyses, using ITS and nuLSU rDNA sequences, L.aptrootii forms a sister-group relationship to L.grisella, which differs in having a rimose thallus.


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