A new species of snook, Centropomus (Teleostei: Centropomidae),  from northern South America, with notes on the geographic distribution of other species of the genus

Zootaxa ◽  
2019 ◽  
Vol 4671 (1) ◽  
pp. 81-92
Author(s):  
ALFREDO CARVALHO-FILHO ◽  
JOICIANE DE OLIVEIRA ◽  
CAMILA SOARES ◽  
JULIANA ARARIPE
Keyword(s):  
New Species ◽  
Caudal Peduncle ◽  
Western Atlantic ◽  
Centropomus Undecimalis ◽  
Interorbital Width ◽  
Mean Diameter ◽  
Mandible Length ◽  
Northern Brazil ◽  
Northern South America ◽  
A New Species

Centropomus irae sp. nov. (Centropomidae) is described from two localities in the state of Amapá, northern Brazil. The new species differs from all its congeners by the typically brown-colored lateral line, the relatively smaller mean interorbital width (4.1% of SL vs. 5.2–6.9%), mean snout length (8.9% of SL vs. 9.8–11.1%), mean diameter of the orbit (4.5% of SL vs. 5.4–7.3%), and mean mandible length (15.7% of SL vs.19.9–21.6%). The new species can also be distinguished from the similar Centropomus undecimalis by the number of scales around the caudal peduncle (18–23, usually 19–21, vs. 22–28, usually 24–27). With Centropomus irae sp. nov., seven species of the genus are now known to occur in the western Atlantic. The distribution of Centropomus in Brazilian waters is updated and a key to the species of this genus is presented. [Zoobank URL: urn:lsid:zoobank.org:act:3D497B38-48A5-4A6E-B377-6D57E82D4DE4[ 

scholarly journals New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin

2014 ◽  
Vol 12 (2) ◽  
pp. 327-332 ◽  
Author(s):  
Bruno F. Melo ◽  
Richard P. Vari
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Rio Negro ◽  
Fin Rays ◽  
Dark Pigmentation ◽  
Northern Brazil ◽  
Adipose Fin ◽  
A New Species

A new species of Cyphocharax, Curimatidae, apparently endemic to the blackwater upper rio Negro of the Amazon basin in northern Brazil, is described.The new species is readily distinguished from its congeners by the presence of a distinctly longitudinally elongate, posteriorly vertically expanding patch of dark pigmentation along the midlateral surface of the caudal peduncle, with the patch extending from the base of the middle caudal-fin rays anteriorly past the vertical through the posterior terminus of the adipose fin. The new species additionally differs from all congeners in details of body and fin pigmentation and meristic and morphometric ratios. Evidence for the assignment of the species to Cyphocharax and the occurrence of other species of the Curimatidae apparently endemic to the upper rio Negro catchment is discussed.

scholarly journals A new species of Tetragonopterus Cuvier, 1816 (Characiformes: Characidae: Tetragonopterinae) from the rio Jari, Amapá, northern Brazil

2011 ◽  
Vol 9 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Bruno F Melo ◽  
Ricardo C Benine ◽  
Tatiane C Mariguela ◽  
Claudio Oliveira
Keyword(s):  
New Species ◽  
Mitochondrial Gene ◽  
The Other ◽  
New Combination ◽  
Valid Species ◽  
Caudal Peduncle ◽  
C Subunit ◽  
Northern Brazil ◽  
Square Spot ◽  
A New Species

A new species of Tetragonopterus is described from the rio Jari, a tributary to the left margin of rio Amazonas, at the border between Amapá and Pará States, northern Brazil. It is morphologically diagnosed from the other species of the genus (T. argenteus, T. chalceus, and T. rarus new combination) by the lozenge-shaped spot on the caudal peduncle vs. rounded to square spot on the other species. Partial sequences of the mitochondrial gene Cytochrome Oxidase C subunit I, from representatives of all valid species of Tetragonopterus, including this new species, were analyzed. The obtained results revealed a significant genetic distance between the new species and its congeners. A discussion on the new combination, Tetragonopterus rarus, is also provided.

A new species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from the Tapajós basin, Brazil

Zootaxa ◽  
2019 ◽  
Vol 4701 (5) ◽  
pp. 461-472
Author(s):  
ÍTHALO DA SILVA CASTRO ◽  
WOLMAR BENJAMIN WOSIACKI
Keyword(s):  
New Species ◽  
Neotropical Region ◽  
Valid Species ◽  
Distal Margin ◽  
Caudal Peduncle ◽  
The Andes ◽  
Brown Band ◽  
Northern Brazil ◽  
Uruguay River ◽  
A New Species

Imparfinis comprises 20 valid species in the Heptapteridae, being the most diverse taxonomic group of catfishes of the Nemuroglanis subclade. The genus has one of the widest geographical distributions in the neotropical region, found on both sides of the Andes, from Costa Rica to the Paraná and Uruguay river basins in Argentina. A new species of Imparfinis is described from streams of the upper Rio Tapajós and its tributary Teles Pires in northern Brazil. The new species is diagnosed from all congeners by the presence of a vertical dark brown band W-shaped at the base of the caudal-fin rays, a thick dark brown lateral stripe from the snout to the end of the caudal peduncle, dark brown head, long maxillary barbel surpassing the distal margin of the pectoral fin, and presence of 39 or 40 total vertebrae. 

A new western Atlantic species of Collodes Stimpson (Decapoda, Brachyura, Inachoididae)

Crustaceana ◽  
2017 ◽  
Vol 90 (7-10) ◽  
pp. 1145-1153 ◽  
Author(s):  
William Santana ◽  
Marcos Tavares
Keyword(s):  
Puerto Rico ◽  
New Species ◽  
The Body ◽  
Spider Crab ◽  
Western Atlantic ◽  
Northern Brazil ◽  
A New Species ◽  
General Appearance

A new species of spider crab, Collodes tuerkayi n. sp., is described and illustrated from the Western Atlantic (Puerto Rico and northern Brazil). The new species superficially resembles C. inermis A. Milne-Edwards, 1878, in the general appearance of the body, but is distinguished by the details of the carapace, thoracic sternum and antennal ornamentation and the proportion of the pereopods.

Nothobranchius elucens, a new species of seasonal killifish from the upper Nile drainage in Uganda (Cyprinodontiformes: Nothobranchiidae)

Zootaxa ◽  
2021 ◽  
Vol 4915 (1) ◽  
pp. 133-147
Author(s):  
BÉLA NAGY
Keyword(s):  
New Species ◽  
Species Group ◽  
Caudal Peduncle ◽  
Morphometric Characters ◽  
Light Blue ◽  
Interorbital Width ◽  
Body Colouration ◽  
Peduncle Length ◽  
A New Species ◽  
Male Coloration

Nothobranchius elucens, new species, from a seasonal habitat in the Aringa system of the Achwa River in the upper Nile drainage in northern Uganda, is described. It belongs to the N. rubroreticulatus species group, whose members are characterised by male coloration of anal and caudal fins with slender light blue subdistal band and slender dark distal band. Nothobranchius elucens is distinguished from all other members of the genus by the following characters in males: body colouration golden-grey with brown scale margins creating irregular vertical stripes on trunk; anal fin yellow with brown spots proximally, with slender brown median band, followed by a slender light blue subdistal band and a slender black distal band; caudal fin brown proximally and medially, followed by a slender light blue subdistal band and a slender black distal band; dorsal fin golden with irregular brown stripes and narrow light blue subdistal band and with narrow black distal band. Furthermore, it differs from the closest known relative, N. taiti, also by the morphometric characters of having a smaller head length of 29.5–33.1 % SL; smaller prepectoral length of 31.2–33.9 % SL; greater head depth of 81–87 % HL; greater interorbital width of 43–49 % HL; and greater caudal peduncle length of 145–152 in % of its depth. 

Squalius platyceps, a new species of fish (Actinopterygii: Cyprinidae) from the Skadar Lake basin

2010 ◽  
Vol 19 (1) ◽  
pp. 154-167 ◽  
Author(s):  
P. Zupančič ◽  
D. Marić ◽  
A.M. Naseka ◽  
N.G. Bogutskaya
Keyword(s):  
New Species ◽  
Head Width ◽  
Lake Basin ◽  
New Taxon ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Interorbital Width ◽  
Black Pigmentation ◽  
A New Species

Squalius platyceps, new species, is described from the Drin River drainage including the Skadar Lake and its tributaries. The new taxon is distinguished from other species of the genus Squalius in the eastern Adriatic Sea basin by a combination of the following character states: body depth 24-29% SL; head length 25-30% SL; a wide head (head width 52-59% HL, and interorbital width 37-42% HL); a moderately pointed conical snout; a subterminal mouth, with a projecting upper lip; a straight mouth cleft; lower jaw length (38-43% HL) about equal to caudal peduncle depth and only slightly larger than interorbital width; 43-47 (commonly 44-45) total lateral line scales; commonly 8½ branched anal fin rays; anal fin margin straight (in specimens up to about 180 mm SL) or convex; commonly 43 total vertebrae (24+19 or 25+18); a row of dense black pigment dots along the outer margin of scales on back and flanks forming a regular reticulate pattern, and intense black pigmentation on pectoral, pelvic, anal and caudal fins.

A new species of Crenitulus Winters, 1926 (Coleoptera: Hydrophilidae: Chaetarthrinae: Anacaenini) from northern South America

Zootaxa ◽  
2017 ◽  
Vol 4319 (1) ◽  
pp. 169 ◽  
Author(s):  
LARISSA SANTANA ◽  
CESAR JOÃO BENETTI ◽  
ANA MARIA PES
Keyword(s):  
New Species ◽  
Body Size ◽  
South America ◽  
Anterior Margin ◽  
Proximal Portion ◽  
Median Lobe ◽  
Northern Brazil ◽  
Lateral Margins ◽  
Northern South America ◽  
A New Species

A new species of the genus Crenitulus Winters, 1926 (Hydrophilidae: Chaetarthrinae: Anacaenini), C. clarksoni sp. nov. is described from northern Brazil and Guyana. The new species can be distinguished from other species of Crenitulus by the following combination of characteristics: body size 1.6–1.8 mm in length; clypeus, frons, pronotum and elytra black, pronotum with distinctly demarcated yellow lateral margins; presence of dorsal pubescence and longitudinal rows of coarser punctures on lateral margins of elytra; apical antennomere 1.5 times longer than wide and 2.5 times longer than antennomere 8; maxillary palpi 2.5 times longer than wide and 2.2 times longer than palpomere 3; mesoventrite nearly flat; procoxae with strong, large spines; femoral pubescence confined to anterior margin and proximal portion; by phallobase as long as parameres; by parameres narrowed apically with the apex rounded and by the median lobe slightly shorter than parameres with corona in subapical position. 

A new species of the deepwater scorpionfish genus Phenacoscorpius (Teleostei: Scorpaenidae) from the Galápagos Islands

Zootaxa ◽  
2017 ◽  
Vol 4323 (2) ◽  
pp. 261 ◽  
Author(s):  
KUNTO WIBOWO ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Galapagos Islands ◽  
Galápagos Islands ◽  
Caudal Peduncle ◽  
Morphometric Characters ◽  
Interorbital Width ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

A new species of scorpionfish, Phenacoscorpius mccoskeri, is described based on three specimens from the Galápagos Islands, Ecuador, eastern Pacific. The new species is distinguished from other species of Phenacoscorpius by the following combination of characters: 19–20 pectoral-fin rays, middle rays branched; 5–19 pored lateral-line scales; palatine teeth present; small slit behind fourth gill arch; second preopercular spine absent; and nuchal and parietal spines distinct; in addition to some morphometric characters, including head length and width, interorbital width, caudal-peduncle depth and postorbital length. 

A new species of Yunnanilus (Cypriniformes: Nemacheilidae) from Sichuan, southwest China

Zootaxa ◽  
2018 ◽  
Vol 4532 (1) ◽  
pp. 137
Author(s):  
LI-NA DU ◽  
MIAN HOU ◽  
XIAO-YONG CHEN ◽  
JUN-XING YANG
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Southwest China ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Interorbital Width ◽  
Eye Diameter ◽  
Peduncle Length ◽  
Fin Length ◽  
A New Species

A new species of Yunnanilus is described from Tuojiang River, Sichuan, China. The new species, Yunnanilus jiuchiensis, can be distinguished from other species of Yunnanilus by the following combination of characters: processus dentiformis absent; body covered with scarce scales; lateral-line incomplete, as long as half the length of the pectoral-fin length, with 6–11 pores; eye diameter larger than interorbital width; and caudal-peduncle length less than its depth. 

scholarly journals A new species of scaly blenny of the genus Labrisomus (Actinopterygii: Labrisomidae) from the tropical West Atlantic

Zootaxa ◽  
2009 ◽  
Vol 2015 (1) ◽  
pp. 62-68 ◽  
Author(s):  
IVAN SAZIMA ◽  
ALFREDO CARVALHO-FILHO ◽  
JOÃO LUIZ GASPARINI ◽  
CRISTINA SAZIMA
Keyword(s):  
New Species ◽  
Northeastern Brazil ◽  
Dark Spot ◽  
Rocky Shores ◽  
Southwestern Atlantic ◽  
Western Atlantic ◽  
Light Blue ◽  
Dorsal Fin ◽  
Fernando De Noronha ◽  
A New Species

A new species of scaly blenny, Labrisomus conditus sp. n., is described from Fernando de Noronha Archipelago, off northeastern Brazil. It differs from its Western Atlantic congeners by the following combination of characters: nuchal cirri when depressed not reaching dorsal-fin origin, 68 to 73 lateral line scales, first and second dorsal-fin spines slightly shorter than third spine and not flexible, numerous pale dots overall (light blue in life), opercular dark spot with incomplete and diffuse broad pale margin (orange in life). The new species is a territorial bottom-dweller in rocky shores and is found among algae and in crevices at depths from 0.5 to 6 m. Labrisomus conditus sp. n. feeds mostly on crustaceans (crabs, amphipods) and molluscs (snails, bivalves). The new species increases to five the species within the genus Labrisomus recorded from Southwestern Atlantic.

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