Loaches of Homatula (Teleostei: Nemacheilidae) from the upper Salween River in Yunnan, China with description of three new species

Zootaxa ◽  
2019 ◽  
Vol 4711 (2) ◽  
pp. 330-348
Author(s):  
XU LI ◽  
XING-JIN CHE ◽  
WEI ZHOU
Keyword(s):  
New Species ◽  
Geographical Area ◽  
The Body ◽  
Red River ◽  
Caudal Peduncle ◽  
Dorsal Midline ◽  
Western Yunnan ◽  
Major Tributary ◽  
Three New Species ◽  
Salween River

Seven loaches of Homatula are distributed in a narrow geographical area between the upper Black River (or Song Da in Vietnam, that is a major tributary of the Red River, including the tributaries Lixian-jiang and Tengtiao-jiang in Yunnan, China) and the upper Salween River drainage (including tributaries of the Nu-jiang and Nanding-he, the latter is a major tributary of the Salween River in Yunnan, China). These seven species are distinguished from other Homatula by the combination of having the body densely-scaled, the lateral line complete, and a short adipose crest along the dorsal midline of the caudal peduncle that does not reach the posterior end of anal-fin base or does not extend beyond the middle of the anal-fin base. Based on a comparison with the described species of the densely-scaled group of Homatula, we can confirm that the specimens collected from the Nu-jiang drainage in western Yunnan are different from known species and are described herein as Homatula anteridorsalis sp. nov., Homatula cryptoclathrata sp. nov., and Homatula nigra sp. nov. 

The catfish genus Erethistoides (Siluriformes: Sisoridae) in Myanmar, with descriptions of three new species

Zootaxa ◽  
2012 ◽  
Vol 3254 (1) ◽  
pp. 55 ◽  
Author(s):  
HEOK HEE NG ◽  
CARL J. FERRARIS, JR. ◽  
DAVID A. NEELY
Keyword(s):  
New Species ◽  
The Body ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Spine Length ◽  
Dorsal Fin ◽  
Anterior Edge ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
Three New Species

The presence of the sisorid catfish genus Erethistoides in Myanmar, represented by three new species, is recorded for thefirst time. This discovery from the Irrawaddy and Sittang river drainages from central Myanmar and the Ann ChaungRiver drainage in western Myanmar extends the documented range of the genus beyond the Ganges/Brahmaputra Riverbasin. Erethistoides longispinis is distinguished from congeners in having the following unique combination ofcharacters: length of the dorsal-fin spine 24–27% SL, length of the pectoral-fin spine 29–35% SL, and absence ofproximally-directed serrations on the anterior edge of the pectoral spine. Erethistoides luteolus differs from congeners inhaving the following combination of characters: yellow base color of the body, body with distinct bands, vertebrae 30,premaxillary tooth band partially exposed when the mouth is closed, length of the dorsal-fin spine 14–15% SL, length ofthe pectoral-fin spine 21–24% SL, absence of proximally-directed serrations on the anterior edge of the pectoral spine,length of the adipose-fin base 16–17% SL, length of the caudal peduncle 22–25% SL and depth of the caudal peduncle 6–7% SL. Erethistoides vesculus is distinguished from congeners in having the following combination of characters: creambase color of the body, body with distinct bands, vertebrae 30, premaxillary tooth band partially exposed when the mouthis closed, length of the dorsal-fin spine 15% SL, length of the pectoral-fin spine 22–23% SL, absence of proximally-directed serrations on the anterior edge of the pectoral spine, length of the adipose-fin base 14–15% SL, length of the caudal peduncle 19–21% SL and depth of the caudal peduncle 4–5% SL.

scholarly journals Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil

2003 ◽  
Vol 1 (1) ◽  
pp. 21-33 ◽  
Author(s):  
Flávio C. T. Lima ◽  
Cristiano R. Moreira
Keyword(s):  
New Species ◽  
Lateral Surface ◽  
Color Pattern ◽  
The Body ◽  
Ventral Region ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Dark Color ◽  
Three New Species ◽  
Pelvic Fin

Three new species of Hyphessobrycon (Characiformes: Characidae) are described from the upper rio Araguaia basin. Hyphessobrycon langeanii n. sp. is distinguished from all congeners by the presence of a well-defined, round humeral spot, a reticulate color pattern, a broad, horizontally-elongate caudal-peduncle blotch, and a relatively wide, faint midlateral dark stripe. Hyphessobrycon eilyos n. sp. is distinguished from all congeners by the absence of humeral and caudal spots; by the presence of numerous dark chromatophores on the lateral surface of the body, intensely concentrated on the ventral region from the pelvic-fin origin to the end of the caudal-fin base, dorsal, adipose, and caudal fins with carmine red pigmentation in life; and the presence of 7-11 maxillary teeth. Hyphessobrycon weitzmanorum n. sp. is distinguished from all congeners by the combination of the possession of two humeral spots and a general dark color pattern. These three new species, along with Creagrutus molinus (Characidae), Apareiodon tigrinus (Parodontidae), Aspidoras velites (Callichthyidae), an undescribed member of the Hypoptopomatinae (Loricariidae), Cnesterodon septentrionalis (Poeciliidae), and Simpsonichthys cholopteryx (Rivulidae), all of which are apparently endemic of the upper rio Araguaia, indicate that this area is a previously unrecognized area of endemism.

Three new species, two new genera, and new family Biphragmosagittidae (Сhaetognatha) from Southwest Pacific Ocean

2011 ◽  
Vol 20 (1) ◽  
pp. 161-173
Author(s):  
A.P. Kassatkina
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Characters ◽  
The Body ◽  
New Order ◽  
New Genera ◽  
New Family ◽  
The Family ◽  
Three New Species

Resuming published and own data, a revision of classification of Chaetognatha is presented. The family Sagittidae Claus & Grobben, 1905 is given a rank of subclass, Sagittiones, characterised, in particular, by the presence of two pairs of sac-like gelatinous structures or two pairs of fins. Besides the order Aphragmophora Tokioka, 1965, it contains the new order Biphragmosagittiformes ord. nov., which is a unique group of Chaetognatha with an unusual combination of morphological characters: the transverse muscles present in both the trunk and the tail sections of the body; the seminal vesicles simple, without internal complex compartments; the presence of two pairs of lateral fins. The only family assigned to the new order, Biphragmosagittidae fam. nov., contains two genera. Diagnoses of the two new genera, Biphragmosagitta gen. nov. (type species B. tarasovi sp. nov. and B. angusticephala sp. nov.) and Biphragmofastigata gen. nov. (type species B. fastigata sp. nov.), detailed descriptions and pictures of the three new species are presented.

scholarly journals A new species of Characidium (Characiformes: Crenuchidae) from small coastal drainages in northeastern Brazil, with remarks on the pseudotympanum of some species of the genus

2014 ◽  
Vol 12 (2) ◽  
pp. 333-342 ◽  
Author(s):  
Angela M. Zanata ◽  
Priscila Camelier
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Body ◽  
Northeastern Brazil ◽  
Horizontal Scale ◽  
Caudal Peduncle ◽  
Transversal Line ◽  
Lateral Band ◽  
The Family ◽  
A New Species

Characidium samurai, a species of the family Crenuchidae apparently endemic to rio das Almas and rio Vermelho basins, Bahia, Brazil, is described. The new species is readily distinguishable from its congeners, except C. lanei, by having a dark lateral band along the head and body that is particularly broad from the rear of the head to the end of the caudal peduncle (1.5 or 2 scales wide) and by the absence of dark bars or blotches on the ventral half of the body. Characidium samurai differs from C. laneiby having the lateral band with straight borders overall (vs.lateral band with somewhat irregular borders due to blotches extending dorsally or ventrally), anal fin ii,7-8 (vs. ii,6), and 4 horizontal scale rows above the lateral line and 4 below (vs. 5/3). It further differs from congeners by a series of features, including isthmus completely covered by scales, lateral line complete with 34-37 perforated scales, 9 scales on the transversal line, 14 scale rows around the caudal peduncle, anal fin ii,7-8, and the absence of dark bars or spots on the fins, except by a faded dorsal-fin bar. The presence of pseudotympanum in four species of Characidium is discussed.

Poecilia (Pamphorichthys) akroa, a new poeciliid species (Cyprinodontiformes: Poeciliidae) from the Rio Tocantins basin, Brazil

Zootaxa ◽  
2018 ◽  
Vol 4461 (3) ◽  
pp. 438
Author(s):  
CARLOS AUGUSTO FIGUEIREDO ◽  
CRISTIANO R. MOREIRA
Keyword(s):  
New Species ◽  
Sensory System ◽  
Color Pattern ◽  
Distal Portion ◽  
The Body ◽  
Caudal Peduncle ◽  
Posterior Portion ◽  
Anterior Branch ◽  
Black Blotch ◽  
A New Species

A new species, Poecilia (Pamphorichthys) akroa, is described from the Rio Tocantins drainage, Brazil. The new species differs from the remaining species of the genus by the possession of 10 or 11 pectoral-fin rays, entire preopercular ramus and posterior portion of the supraorbital ramus of the cephalic sensory system enclosed in canals, a faint longitudinal band along the body, a single gonapophysis, a homogeneous reticulate color pattern on sides of body, urogenital region of females heavily pigmented, distalmost segments of the anterior branch (4a) of the fourth gonopodial ray fused into an elongated segment turned anteriorly, subdistal segments of anterior branch (5a) of fifth gonopodial ray simple, without anterior (ventral) projections, dorsal fin with pigmentation at its distal portion and with a basal black blotch, and chromatophores more concentrated on the posterior margin of the mid-ventral scale series of the caudal peduncle and ventrolateral margin of the adjacent scales forming a series of rhombi posterior to anal fin. 

Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus

Zootaxa ◽  
2004 ◽  
Vol 628 (1) ◽  
pp. 1 ◽  
Author(s):  
JONATHAN W. ARMBRUSTER
Keyword(s):  
New Species ◽  
Nasal Bone ◽  
The Body ◽  
Caudal Peduncle ◽  
Anterior Process ◽  
Males And Females ◽  
A New Species

Pseudancistrus sidereus is described from two collections of specimens from Amazonas, Venezuela. Pseudancistrus sidereus differs from all other members of Pseudancistrus based on the presence of a unique keel on the caudal peduncle formed from the concave dorsal sections of the plates in the ventral series, light spots on the body (these may be yellow in life) centered on the body plates and the absence of the characteristics of the more derived members of Pseudancistrus such as hypertrophied odontodes along the snout in males and females and the loss of evertibility of the cheek plates. Pseudancistrus includes Lithoxancistrus and Guyanancistrus and is diagnosed by the following synapomorphies: no suture between pterotic-supracleithrum and hyomandibula, no contact of the hyomandibula with the prootic, straight, spoon-shaped anterior process of metapterygoid, nasal bone not much wider than laterosensory canal running through it, sphenotic not contacting posteriormost infraorbital externally, and a short ventral ridge on the pelvic basipterygium (lost in some species). Two species formerly assigned to Guyanancistrus are placed in different genera. Hypostomus guacharote is placed in Lasiancistrus and Chaetostomus trinitatis is placed in Ancistrus.Se describe Pseudancistrus sidereus, con base en dos colectas de espec menes del Amazonas venezolano. Pseudancistrus sidereus difiere de los otros miembros del g nero Pseudancistrus por la presencia de una quilla nica en el ped nculo caudal formada a partir de las secciones c ncavas dorsales de las placas de la serie ventral, puntos blancos en el cuerpo (probablemente amarillos en vida) centrados en las placas corporales y la ausencia de ciertas caracter sticas presentes en los miembros m s derivados de Pseudancistrus, como odontodos hiperatrofiados a lo largo del rostro en machos y hembras y la perdida de evertibilidad de las placas de la mejilla. Pseudancistrus incluye a Lithoxancistrus y Guyanancistrus y se diagnostica por las siguientes sinapomorf as: sutura entre el pter tico-supracleitro y la hiomand bula ausente, hiomand bula y pro tico sin contacto, proceso anterior del metapterigoides recto y en forma de cuchara, hueso nasal apenas m s amplio que el canal laterosensorial que corre a trav s del mismo, esfen tico sin contacto externo

Pseudobagarius eustictus, a new species of catfish from northern Laos (Siluriformes: Akysidae)

Zootaxa ◽  
2021 ◽  
Vol 4996 (2) ◽  
pp. 322-330
Author(s):  
HEOK HEE NG ◽  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
The Body ◽  
Head Width ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Pectoral Spine ◽  
Eye Diameter ◽  
Adipose Fin ◽  
A New Species

Pseudobagarius eustictus, new species, is described from the Nam Heung drainage (a tributary of the Mekong River) in northern Laos. It is distinguished from congeners in having a unique combination of the following characters: a weakly-produced snout in which the upper jaw extends only slightly beyond the margin of the lower jaw when viewed ventrally, 3 tubercles on the posterior margin of the pectoral spine, eye diameter 8% HL, head width 24.1% SL, dark yellow dorsal and lateral surfaces of the head, pectoral spine lacking elongate extensions, pectoral fin reaching the pelvic-fin base when adpressed against the body, dorsolateral surfaces of body without longitudinal series of prominent tubercles, body depth at anus 13.7% SL, length of adipose-fin base 17.7% SL, caudal-peduncle depth 7.0% SL, and 33 vertebrae.  

Three new species of Gastromyzon (Teleostei: Balitoridae) from the Temburong River basin, Brunei Darussalam, Borneo

Zootaxa ◽  
2006 ◽  
Vol 1117 (1) ◽  
pp. 1 ◽  
Author(s):  
H. H. TAN ◽  
Z. H. SULAIMAN
Keyword(s):  
New Species ◽  
River Basin ◽  
Lateral Line ◽  
The Body ◽  
Museum Specimens ◽  
Brunei Darussalam ◽  
Three New Species

Three new species of Gastromyzon from Brunei Darussalam, on the island of Borneo, are described from recent collections and from older museum specimens. Gastromyzon cranbrooki, new species, is superficially similar to G. borneensis, but differs in having a distinct secondary rostrum; body brown with 9–10 grey bars, head dorsum dark brown with thin grey reticulate pattern; and 56–60 scales on lateral line. Gastromyzon aeroides, new species, is similar to G. punctulatus, but differs in having the body uniform brown, dorsum uniform brown; head dorsum with very fine cream reticulate pattern (similar to a cream head with brown spots and blotches); dorsal, caudal and anal fins blue in life; and 47–65 scales in lateral line. Gastromyzon venustus, new species, is similar to G. pariclavis, but differs in having both the body and head dorsum plain brown; dorsal, caudal and anal fins red in life; and 58–63 scales in lateral line.

Hemiodus jatuarana, a new species of Hemiodontidae from the rio Trombetas, Amazon Basin, Brazil (Teleostei, Characiformes)

Zootaxa ◽  
2004 ◽  
Vol 546 (1) ◽  
pp. 1 ◽  
Author(s):  
FRANCISCO LANGEANI
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Branchial Arch ◽  
The Body ◽  
Dark Spot ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Dark Pigmentation ◽  
A New Species

Hemiodus jatuarana, a new species of the Hemiodontidae from Oriximin , rio Trombetas, Amazon Basin, Brazil, is described. The new species can be readily distinguished from its congeners by the presence of a horizontally elongated dark spot on the caudal peduncle, and by the absence of any other dark pigmentation pattern on the body. Hemiodus jatuarana is readily separated from H. immaculatus, another species without dark pigmentation on the body, by having 25 27 epibranchial and 36 37 ceratobranchial gill rakers on the first branchial arch, and caudal-fin lobes without longitudinal stripes, vs. 14 16 and 21 25 gill rakers, and a conspicuous longitudinal stripe on each caudal-fin lobe in H. immaculatus. The new species is only known from its type-locality, where it cooccurs with H. immaculatus.

Two new species of Pseudecheneis, rheophilic catfishes (Teleostei: Sisoridae) from Nepal

Zootaxa ◽  
2005 ◽  
Vol 1047 (1) ◽  
pp. 1 ◽  
Author(s):  
HEOK HEE NG ◽  
DAVID R. EDDS
Keyword(s):  
New Species ◽  
The Body ◽  
Unique Combination ◽  
Ganges River ◽  
Caudal Peduncle ◽  
Fin Ray ◽  
Two New Species ◽  
Eye Diameter ◽  
Adipose Fin ◽  
The Ganges

Two new species of sisorid catfish of the genus Pseudecheneis are described from tributaries of the Ganges River in Nepal: Pseudecheneis crassicauda and P. serracula. Pseudecheneis crassicauda can be distinguished from congeners by a unique combination of 38–39 vertebrae, caudal peduncle depth 6.0–6.6% SL, eye diameter 7.5–8.3% HL, length of adipose-fin base 20.3–24.3% SL, pelvic fins reaching the base of the first anal-fin ray, and the presence of pale spots on the body. Pseudecheneis serracula can be distinguished from congeners in having a unique combination of 36–38 vertebrae, strongly elevated neural spines of the last 2–3 preanal and first 6–7 postanal vertebrae, length of adipose-fin base 26.8–30.4% SL, pelvic fins reaching the base of the first analfin ray, and the presence of pale spots on the body.

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