A new genus and species of eelpout (Teleostei: Zoarcidae) from Brazil

Zootaxa ◽  
2008 ◽  
Vol 1852 (1) ◽  
pp. 65 ◽  
Author(s):  
MICHAEL MAIA MINCARONE ◽  
M. ERIC ANDERSON
Keyword(s):  
New Genus ◽  
Southeastern Brazil ◽  
Gill Slit ◽  
New Genus And Species ◽  
Upper Lip ◽  
Caudal Vertebrae ◽  
Fin Rays ◽  
Head Pores ◽  
Janeiro State ◽  
Pelvic Fin

The eelpout Leucogrammolycus brychios gen. et sp. nov., is described from nine specimens, five males (92–198 mm SL) and four females (99–205 mm SL), collected from off Rio de Janeiro state, southeastern Brazil, at depths from 536 to 632 m. It is mainly characterized by the following combination of characters: vertebrae 23–26 + 62–66 = 85–92; first anal-fin pterygiophore associated with first or second caudal vertebrae; scales absent; lateral line with mediolateral and ventral branches; upper lip broadly adnate to snout tip; gill slit not reaching ventrally to opposite lower end of pectoral-fin base; pelvic-fin rays 2; head pores relatively few, small, rounded; and whitish mid-body stripe forming a chevron on top of snout.

Rhyacoschistura larreci, a new genus and species of loach from Laos and redescription of R. suber (Teleostei: Nemacheilidae)

Zootaxa ◽  
2019 ◽  
Vol 4612 (2) ◽  
pp. 151
Author(s):  
MAURICE KOTTELAT
Keyword(s):  
New Genus ◽  
Colour Pattern ◽  
New Genus And Species ◽  
Body Depth ◽  
Caudal Fin ◽  
Lower Lip ◽  
Fin Rays ◽  
First Ray ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

Rhyacoschistura, new genus, belongs to a group of genera (Physoschistura, Mustura, Pteronemacheilus, Petruichthys) characterised by the modified branched pectoral-fin rays of males, with a very thick first ray, usually without membranes between some of the branches and/or rays, and anterior rays and/or membranes covered by small tubercles at maturity. Rhyacoschistura is distinguished from them by the combination of: presence of a suborbital flap; emarginate caudal fin; lower lip with a wide median interruption and connected to isthmus by a frenum; body depth about equal from behind head to caudal-fin base. Rhyacoschistura larreci, new species, is described from the Mekong drainage in Xayaburi Province, Laos. It is distinguished by details of the morphology of the pelvic fin, and its colour pattern (flank with numerous narrow slanted bars, very irregularly organised and shaped, more or less connected, or sometimes covering the whole flank). Schistura suber, from Nam Ngum watershed, is redescribed on the basis of adults and placed in Rhyacoschistura.  

scholarly journals A new genus and species of characid fish from the Amazon basin: the recognition of a relictual lineage of characid fishes (Ostariophysi: Cheirodontinae: Cheirodontini)

2008 ◽  
Vol 6 (4) ◽  
pp. 663-678 ◽  
Author(s):  
Cristina M. Bührnheim ◽  
Tiago P. Carvalho ◽  
Luiz R. Malabarba ◽  
Stanley H. Weitzman
Keyword(s):  
Amazon Basin ◽  
New Genus ◽  
Abdominal Cavity ◽  
Phylogenetic Position ◽  
New Taxon ◽  
New Genus And Species ◽  
Caudal Fin ◽  
Caudal Vertebrae ◽  
Fin Rays ◽  
Close Relationship

Amazonspinther dalmata, a new miniature characid from the streams of rio Purus and rio Madeira, right bank tributaries of the rio Amazonas, is described as a new genus and species of the subfamily Cheirodontinae. The unique characters of the new genus and species are the three remarkable black blotches on the base of the dorsal, anal, and caudal fins, the anteriormost proximal radial of the anal fin with an anteriorly extended lamina entering the abdominal cavity, and the extremely elongate caudal peduncle. The reduced number of ventral procurrent caudal-fin rays (7-9), and the hemal spines of only posterior one, two, or sometimes three caudal vertebrae directly articulating with the ventral procurrent caudal-fin rays further diagnoses the new taxon from remaining genera of the tribe Cheirodontini. The results of a phylogenetic analysis strongly support a close relationship between A. dalmata and Spintherobolus in the tribe Cheirodontini on the basis of fifteen unambiguous synapomorphies. Ten of these characters, previously hypothesized as exclusive synapomorphies for Spintherobolus, were now also identified in Amazonspinther, such as the pattern of exposed neuromasts on the head, the presence of a second pseudotympanum anterior to the first pleural rib, and the nearly discoidal coracoid bone. A discussion about the phylogenetic position of the closely related fossil †Megacheirodon to Spintherobolus and Amazonspinther is also provided. Convergent characters shared between Amazonspinther and the characid Priocharax are discussed in relation to miniaturization. Biogeographical implications of the diversification of Amazonspinther, Spintherobolus, and Megacheirodon lineages are discussed.

scholarly journals A new genus and species of congrid eel from the Philippines (Anguillliformes: Congridae: Bathymyrinae)

Zootaxa ◽  
2018 ◽  
Vol 4454 (1) ◽  
pp. 78
Author(s):  
DAVID G. SMITH
Keyword(s):  
New Genus ◽  
East Coast ◽  
The Philippines ◽  
Single Specimen ◽  
New Genus And Species ◽  
Upper Lip ◽  
Posterior Nostril ◽  
Infraorbital Canal ◽  
Head Pores

Rostroconger macrouriceps sp. nov. is described from a single specimen collected off the east coast of Luzon, Philippines. It is a member of the subfamily Bathymyrinae, differing from all others in the presence of a bony rostrum extending from the anterior end of the snout. The posterior nostril opens into a slit in the upper lip and is not visible externally. The head pores are reduced in size and number; only three pores are present in the infraorbital canal, four in the supraorbital canal, and none in the preopercular or supratemporal canals.

Gymnesigobius medits (Teleostei: Gobiidae), a new gobiid genus and species from the western Mediterranean slope bottoms

Zootaxa ◽  
2019 ◽  
Vol 4651 (3) ◽  
pp. 513-530
Author(s):  
MARCELO KOVAČIĆ ◽  
FRANCESC ORDINES ◽  
SERGIO RAMIREZ-AMARO ◽  
ULRICH K. SCHLIEWEN
Keyword(s):  
New Genus ◽  
Morphological Characters ◽  
Western Mediterranean ◽  
Full Description ◽  
Unique Combination ◽  
New Genus And Species ◽  
Posterior Edge ◽  
Superior Part ◽  
Dorsal Fin ◽  
Pelvic Fin

A new genus and species of goby, Gymnesigobius medits sp. nov., is described from the western Mediterranean slope bottoms at the Balearic Islands. The new goby belongs to the Gobius-lineage (Gobiinae). Examination of the single known specimen exhibits a unique combination of morphological characters which could not be fitted to any known genus. Gymnesigobius gen. nov. is morphologically distinguished from all other genera in the Gobius-lineage by the following combination of characters: chin without fold or barbels; mouth terminal with anterior tip above horizontal level of lower eye edge; predorsal area and first dorsal fin base naked; pelvic fin anterior membrane well developed; head with anterior oculoscapular and preopercular canals, posterior oculoscapular canal absent; pores of head canals enlarged, e.g. pores α and ρ larger or of about the same size as interspaces to pore β; six transverse suborbital rows of sensory papillae, four continuous suborbital rows in front of row b, fifth row divided in three parts but in front of row b, sixth row just as superior part above row b and below pore α; longitudinal suborbital row b barely reaching forward to the vertical from posterior edge of eye. A full description of the new genus and species is provided. The new species, collected at a depth of between 344 and 364 m (mean depth of 354 m), is one of very few gobiid species found at bathyal depths. 

scholarly journals Sinorhodeus microlepis, a new genus and species of bitterling from China (Teleostei: Cyprinidae: Acheilognathinae)

Zootaxa ◽  
2017 ◽  
Vol 4353 (1) ◽  
pp. 69 ◽  
Author(s):  
FAN LI ◽  
TE-YU LIAO ◽  
RYOICHI ARAI ◽  
LIANGJIE ZHAO
Keyword(s):  
Yangtze River ◽  
New Genus ◽  
Mitochondrial Gene ◽  
New Genus And Species ◽  
Dorsal Fin ◽  
Chongqing City ◽  
White Spots ◽  
Pharyngeal Teeth ◽  
Fin Rays ◽  
Black Blotch

A new genus and species, Sinorhodeus microlepis gen. et sp. nov., is described from a tributary of the Yangtze River, in Chongqing City, China. Sinorhodeus gen. nov. can be distinguished from four closely related genera, Paratanakia, Pseudorhodeus, Rhodeus, and Tanakia, by the following combination of characters: pharyngeal teeth 0,0,4–4,0,0, longitudinal scales 41–46, white spots on dorsal-fin rays absent, a black blotch on dorsal fin in juvenile absent, and less developed wing-like yolk sac projections in larvae. Phylogenetic analysis of one mitochondrial gene and six nuclear genes supports the establishment of the new genus. 

Uanauna gen. nov., a new genus of fireflies endemic to the Brazilian Atlantic forest (Coleoptera: Lampyridae), with key to brazilian genera of Lucidotina

Zootaxa ◽  
2019 ◽  
Vol 4585 (1) ◽  
pp. 59 ◽  
Author(s):  
LUCAS CAMPELLO-GONÇALVES ◽  
PAULA M. SOUTO ◽  
JOSÉ R.M. MERMUDES ◽  
LUIZ F.L. SILVEIRA
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
New Genus ◽  
Southeastern Brazil ◽  
Mountain Range ◽  
Brazilian Atlantic Forest ◽  
Diagnostic Features ◽  
Serra Do Mar ◽  
Forest Habitats ◽  
Janeiro State

Here, we propose Uanauna gen. nov. (Lampyridae: Photinini), a new monotypic genus of fireflies endemic to the Brazilian Atlantic Forest. Uanauna angaporan sp. nov. occurs in Submontane and Montane forest habitats at the Serra do Mar mountain range, in the Southern Fluminense region (Rio de Janeiro State, Southeastern Brazil). The new species was recorded both on the mainland, at the municipality of Itaguaí and Rio de Janeiro, and at the continental island of Ilha Grande, in Angra dos Reis, at the Rio de Janeiro State. An occurrence map and illustrations of diagnostic features are given for the new taxa, as well as a key to Lucidotina genera in Brazil. 

A new genus and species of katydids of the tribe Polyancistrini (Orthoptera: Tettigoniidae: Pseudophyllinae) from Brazil, an apparent pest of Eucalyptus plantations

Zootaxa ◽  
2005 ◽  
Vol 952 (1) ◽  
pp. 1
Author(s):  
PIOTR NASKRECKI ◽  
CRISTIANO LOPES-ANDRADE
Keyword(s):  
New Genus ◽  
Minas Gerais ◽  
Southeastern Brazil ◽  
New Genus And Species ◽  
Unique Structure ◽  
Minas Gerais State ◽  
Eucalyptus Plantations

A new genus and species of polyancistrine katydid, Spinapecta alieniphaga gen. n. et sp. n. is described from Minas Gerais State, Southeastern Brazil. It is closely related to Polyancistrus Serville, but differs from this and other members of Polayncistrini (Tettigoniidae: Pseudophyllinae) in the unique structure of the male abdomen, sternal armature, and the female sound producing organs. S. alieniphaga appears to be a pest of Eucalyptus plantations.

scholarly journals Lophiobrycon weitzmani, a new genus and species of glandulocaudine fish (Characiformes: Characidae) from the rio Grande drainage, upper rio Paraná system, southeastern Brazil

2003 ◽  
Vol 1 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Ricardo M. C. Castro ◽  
Alexandre C. Ribeiro ◽  
Ricardo C. Benine ◽  
Alex L. A. Melo
Keyword(s):  
New Species ◽  
Standard Length ◽  
New Genus ◽  
Rio Grande ◽  
Sister Group ◽  
Southeastern Brazil ◽  
Sister Group Relationship ◽  
New Genus And Species ◽  
Dorsal Fin ◽  
Adipose Fin

A new genus and species of glandulocaudine, Lophiobrycon weitzmani, is described based on specimens collected in headwater tributary streams of the rio Grande, upper rio Paraná system, State of Minas Gerais, southeastern Brazil. The inclusion of the new species in the phylogeny of the subfamily Glandulocaudinae proposed by Weitzman & Menezes (1998), reveals a sister group relationship between the new genus and the monophyletic group composed of Glandulocauda and Mimagoniates that currently form the tribe Glandulocaudini. The new species can be readily distinguished from all other species of the tribe by the autapomorphic presence in adult male individuals (with more than 23.9 mm standard length) of an adipose-fin whose base extends for almost the entire distance between the posterior terminus of the base of the dorsal fin and the base of the upper lobe of the caudal fin and averages approximately 25% standard length, along with the presence of globular expansions formed by the lepidotrichia and hypertrophied soft tissue in the middle portions of the first and second pectoral-fin rays. The diagnosis of the tribe Glandulocaudini is modified to accommodate the new genus.

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