scholarly journals Two new species of the hillstream loach genus Indoreonectes from the northern Western Ghats of India (Teleostei: Nemacheilidae)

2021 ◽  
Vol 71 ◽  
pp. 517-533
Author(s):  
Pradeep Kumkar ◽  
Manoj Pise ◽  
Pankaj A. Gorule ◽  
Chandani R. Verma ◽  
Lukáš Kalous
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
Western Ghats ◽  
River System ◽  
The Body ◽  
Posterior Border ◽  
Lower Lip ◽  
Dorsal Fin ◽  
Western Ghats Of India ◽  
Two New Species

The hill stream loach genus Indoreonectes is endemic to peninsular India south of the Satpura hill ranges and is represented by three species I. evezardi, I. keralensis and I. telanganaensis. Indoreonectes evezardi has been suggested as a species complex based on recent genetic studies; however, due to lack of type material the species delimitation has been difficult. Here we redescribe I. evezardi collected from its type locality and describe two new species from the northern Western Ghats of India. Indoreonectes neeleshi, described from Mula River tributary of Godavari river system, can be diagnosed from all its congeners based on a combination of characters: inner rostral barbel reaching middle of nostril; maxillary barbel reaching midway between eye and posterior border of operculum; dorsal hump behind nape; bars on lateral side of the body wider than inter-bar space; total vertebrae 35 and dorsal fin insertion between 13th and 14th abdominal vertebrae. Indoreonectes rajeevi, described from Hiranyakeshi River of the Krishna river system, differs from all its congeners based on a combination of characters: inner rostral barbel reaching anterior margin of eye; maxillary barbel reaching posterior border of operculum; conspicuous black markings on lower lip, dorsal hump absent; total vertebrae 36 and dorsal fin insertion between 12th and 13th abdominal vertebrae. Further, I. neeleshi differs from its congeners by the raw genetic distance of 6.8–14.4% for the cox1 gene and 5.7–16.2% for the cytb gene, while I. rajeevi differs from its congeners by the raw genetic distance of 10.9–14.0% for the cox1 gene and 11.8–15.8% for the cytb gene.

scholarly journals A new species of Xylophis Beddome, 1878 (Serpentes: Pareidae) from the southern Western Ghats of India

2021 ◽  
Vol 71 ◽  
pp. 219-230
Author(s):  
Surya Narayanan ◽  
Pratyush P. Mohapatra ◽  
Amirtha Balan ◽  
Sandeep Das ◽  
David J. Gower
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Genetic Distance ◽  
Dna Sequences ◽  
Western Ghats ◽  
White Collar ◽  
The Body ◽  
Western Ghats Of India ◽  
Southern Western Ghats ◽  
A New Species

We reassess the taxonomy of the Indian endemic snake Xylophis captaini and describe a new species of Xylophis based on a type series of three specimens from the southernmost part of mainland India. Xylophis deepakisp. nov. is most similar phenotypically to X. captaini, with which it was previously confused. The new species differs from X. captaini by having a broader, more regular and ventrally extensive off-white collar, more ventral scales (117–125 versus 102–113), and by lack of flounces on the body and proximal lobes of the hemipenis. Phylogenetic analysis of mitochondrial 16S DNA sequences strongly indicates that the new species is most closely related to X. captaini, differing from it by an uncorrected pairwise genetic distance of 4.2%. A revised key to the species of Xylophis is provided.

scholarly journals A new species of Xyliphius, a rarely sampled banjo catfish (Siluriformes: Aspredinidae) from the rio Tocantins-Araguaia system

2010 ◽  
Vol 8 (1) ◽  
pp. 105-112 ◽  
Author(s):  
Carlos A Figueiredo ◽  
Marcelo R Britto
Keyword(s):  
New Species ◽  
Conservation Status ◽  
River System ◽  
Character State ◽  
New Taxon ◽  
Posterior Border ◽  
Lower Lip ◽  
Araguaia River ◽  
State Variation ◽  
A New Species

Xyliphius anachoretes, a new species of aspredinid catfish is described from the Tocantins-Araguaia River system. Xyliphius anachoretes is diagnosed by the presence of six developed retrorse serrae on posterior border of pectoral-fin spine, presence of papillae on the lower lip bearing minute branches, and only two dorsal procurrent rays. Comments about the informativeness of character-state variation among Xyliphius species and aspredinid related genera are furnished. Also, a brief discussion about conservation status of the new taxon is made.

scholarly journals Two new species of Rhinogobius (Gobiiformes: Oxudercidae) from Palawan, Philippines, with their phylogenetic placement

Zootaxa ◽  
2021 ◽  
Vol 5068 (1) ◽  
pp. 81-98
Author(s):  
KEN MAEDA ◽  
CHUYA SHINZATO ◽  
RYO KOYANAGI ◽  
TAIGA KUNISHIMA ◽  
HIROZUMI KOBAYASHI ◽  
...  
Keyword(s):  
New Species ◽  
Common Ancestor ◽  
River System ◽  
The Body ◽  
Sulu Sea ◽  
Phylogenetic Placement ◽  
Fin Ray ◽  
Two New Species ◽  
Predorsal Scale ◽  
Palawan Island

Two new species of Rhinogobius found in streams on central part of Palawan Island, Philippines are described. The two new species, Rhinogobius estrellae and Rhinogobius tandikan share unique transverse rows of sensory papillae on the cheek with Rhinogobius similis Gill, 1859, but differ from the latter in fin ray counts, arrangement of the scales, etc. The two new species are distinguished from each other by the pectoral-fin ray count, the longitudinal- and predorsal-scale counts, and colouration of the body. Rhinogobius estrellae new species and R. tandikan new species have been found allopatrically in a stream within Malatgao River system flowing into the Sulu Sea and in the Cayulo River flowing into the South China Sea, respectively. The Malatgao River system is the southernmost habitat of the genus Rhinogobius. Rhinogobius similis had been considered as the only member of the most basal lineage of this genus, but our mitochondrial genome analysis suggested that the two new species are additional members of this lineage. They are considered to be relicts of their common ancestor with R. similis, which probably had a wider distribution.  

Two new species of Simulium (Gomphostilbia) (Diptera: Simuliidae) from South India

Zootaxa ◽  
2020 ◽  
Vol 4742 (1) ◽  
pp. 57-72
Author(s):  
SANKARAPPAN ANBALAGAN ◽  
SURULIYANDI VIJAYAN ◽  
CHELLAPANDIAN BALACHANDRAN ◽  
BERCHMANS THIYONILA ◽  
AATHMANATHAN SURYA
Keyword(s):  
New Species ◽  
Western Ghats ◽  
South India ◽  
Morphological Characters ◽  
Species Group ◽  
Coi Gene ◽  
Morphological Classification ◽  
Western Ghats Of India ◽  
Two New Species ◽  
The Western Ghats

Two new black fly species, Simulium (Gomphostilbia) dinakarani sp. nov. and Simulium (Gomphostilbia) krishnani sp. nov. are described based on reared adult, pupal and larval specimens collected from the Western Ghats of India. These two new species are placed in the Simulium batoense species-group of the subgenus Gomphostilbia Enderlein. The morphological characters of two new species are compared with other related species of batoense species-group in India. The COI gene has successfully differentiated these two new species from its allies, S. (G.) panagudiense and S. (G.) takaokai of the batoense species group and the phylogenetic analysis by using COI gene sequences supporting its morphological classification. 

A review of the genus Pareuchiloglanis (Sisoridae) from the Lancangjiang (upper Mekong River) with descriptions of two new species from Yunnan, China

Zootaxa ◽  
2007 ◽  
Vol 1440 (1) ◽  
pp. 1 ◽  
Author(s):  
XU LI ◽  
WEI ZHOU ◽  
ALFRED W. THOMSON ◽  
QING ZHANG ◽  
YING YANG
Keyword(s):  
New Species ◽  
Pectoral Fin ◽  
Caudal Fin ◽  
Lower Lip ◽  
Dorsal Fin ◽  
Gill Opening ◽  
Fin Ray ◽  
Two New Species ◽  
Adipose Fin ◽  
Pelvic Fin

This study reports five species of Pareuchiloglanis in the Lancangjiang drainage of China, including descriptions of two new species: P. abbreviatus sp. nov., P. gracilicaudata, P. kamengensis, P. myzostoma and P. prolixdorsalis sp. nov. The two new species are distinguished from P. feae, P. poilanei, P. sichuanensis and P. tianquanensis by a shorter adipose-fin base and the adipose-fin base being separated from the caudal fin, differ from P. sinensis, P. macrotrema, P. longicauda and P. rhabdurus by a more restricted gill opening (not reaching the base of the first pectoral-fin element ventrally), and differ from P. songmaensis by an anal-fin ray count of ii-3-4 (vs. ii-8). Pareuchiloglanis abbreviatus is distinguished from congeners by the tip of the dorsal fin reaching the origin of the adipose fin when depressed. Pareuchiloglanis prolixdorsalis is distinguished from P. gongshanensis, P. macropterus and P. kamengensis by lacking a sulcus between the lower lip and the base of the maxillary barbel, and differs from P. anteanalis by the shorter pectoral fin, the pectoral fin not reaching to the origin of pelvic fin. It differs from P. gracilicaudata, P. myzostoma, P. nebulifer and P. robusta by a caudal-fin ray count of 6+7 (vs. 7+8), and differs from P. abbreviatus by the tip of dorsal fin not reaching to the origin of the adipose fin when depressed (vs. reaching). It differs from P. songdaensis by the distance between the origin of the pelvic fin to the base of the anal fin being longer than that to the mouth (vs. equal).  

A new syntopic species of small barb from the Western Ghats of India (Teleostei: Cyprinidae)

Zootaxa ◽  
2018 ◽  
Vol 4434 (3) ◽  
pp. 529 ◽  
Author(s):  
UNMESH KATWATE ◽  
PRADEEP KUMKAR ◽  
RAJEEV RAGHAVAN ◽  
NEELESH DAHANUKAR
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Western Ghats ◽  
Lateral Line Scale ◽  
Dorsal Fin ◽  
Line Scale ◽  
Mitochondrial Cytochrome B ◽  
Western Ghats Of India ◽  
The Western Ghats ◽  
Pelvic Fin

A new species of the cyprinid genus Pethia is described from the Hiranyakeshi, a tributary of the Krishna River system in the Western Ghats mountain ranges of peninsular India. The new species, Pethia sahit, is syntopic—and shoals together—with Pethia longicauda, a species described recently from the same river. Pethia sahit is distinguished from P. longicauda and its congeners by a combination of characters like, incomplete lateral line with 3–6 pored scales; 19–22 scales in lateral series; 4½ scales between dorsal-fin origin and lateral-line row and 2½ scales between lateral line row and pelvic-fin origin; intercalated scale row originates above and after the 6th scale of the lateral-line scale row; dorsal fin originating behind the pelvic-fin origin; 4+13 abdominal and 12 caudal vertebrae; dorsal, pectoral, pelvic, anal and caudal fins without any bands or spots, deep yellow-orange in color or deep red with a pale tint of orange in mature males; a dark-black vertically elongate humeral spot, overlapping the 4th lateral-line scale, extending over the base of one scale above and below the 4th scale; caudal peduncle spot dark, covering 14th–16th scales in lateral-line scale row. Genetic analysis based on the mitochondrial cytochrome b gene indicates that P. sahit and P. longicauda are not sister taxa. Further, P. sahit has no genetically proximate congener in the Western Ghats region, and differs from known congeners from south and southeast Asia, for which genetic data are available, with genetic distance ranging from 11.8–16.4%. 

scholarly journals Integrative taxonomy reveals two new cryptic species of Hyphessobrycon Durbin, 1908 (Teleostei: Characidae) from the Maracaçumé and middle Tocantins River basins, Eastern Amazon region

2020 ◽  
Vol 723 ◽  
pp. 77-107
Author(s):  
Erick Cristofore Guimarães ◽  
Pâmella Silva De Brito ◽  
Pedro Henrique Negreiros Bragança ◽  
Jadson Pinheiro Santos ◽  
Axel Makay Katz ◽  
...  
Keyword(s):  
New Species ◽  
Mitochondrial Gene ◽  
Morphological Characters ◽  
Molecular Data ◽  
Color Pattern ◽  
Integrative Taxonomy ◽  
The Body ◽  
Dorsal Fin ◽  
Two New Species ◽  
Molecular Phylogenetic

Two new species, Hyphessobrycon frickei Guimarães, Brito, Bragança, Katz & Ottoni sp. nov. and H. geryi Guimarães, Brito, Bragança, Katz & Ottoni sp. nov., are herein described, based on seven different and independent species delimitation methods, and on molecular and morphological characters, making the hypothesis of these new species supported from an integrative taxonomy perspective. They belong to the “Rosy tetra” clade, which is mainly characterized by the presence of a dark brown or black blotch on the dorsal fin and the absence of a midlateral stripe on the body. These two new species are distinguished from the other members of this clade mainly by the arrangement, shape and color pattern of humeral and dorsal-fin spots, as well as by other characters related to scale counts and body pigmentation. The placement of the new species within the “Rosy tetra” clade was based on the combination of morphological character states mentioned above and corroborated by a molecular phylogenetic analysis using the mitochondrial gene cytochrome oxidase subunit 1. In addition, a new clade (here termed Hyphessobrycon copelandi clade) within the “Rosy tetra” clade is proposed based on molecular data, comprising H. copelandi, H. frickei sp. nov., H. geryi sp. nov. and a still undescribed species. Our results corroborate the occurrence of hidden species within the “Rosy tetra” clade, as suggested by previous studies.

scholarly journals Strobilanthes mullayanagiriensis and S. bislei (Acanthaceae) - two new species from the Western Ghats, India

2019 ◽  
Vol 6 (1) ◽  
pp. 46-53 ◽  
Author(s):  
Sinjumol Thomas ◽  
Bince Mani ◽  
S John Britto ◽  
A K Pradeep
Keyword(s):  
New Species ◽  
Species Distribution ◽  
Western Ghats ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Western Ghats Of India ◽  
Karnataka State ◽  
Two New Species ◽  
The Western Ghats

Strobilanthes mullayanagiriensis and S. bislei are plietesial species described for the flora of Western Ghats of India from Karnataka state. Pollen morphology is used as a key character for establishing these two species. Distribution and notes on its allied species are provided along with photographis for facilitating its identification. The former species readily distinguished from its allied species S. consanguinea by coriaceous and scabrous leaves with broadly ovate lamina, crenate margin and cuspidate apex, uninterrupted viscous spikes, longer bract: calyx ratio, much shorter corolla and pollen grains with ribs meet at the poles into two groups and one rib completely encircling the pollen. The latter species definitely distinguished from the allied species by uninterrupted viscous inflorescence with sericeous indumentum, calyx exceeds the bract, anthers are held parallel to the filament and ellipsoid pollen grains with slightly twisted ribs.

A NEW SECTION (BEGONIA SECT. FLOCCIFERAE SECT. NOV.) AND TWO NEW SPECIES IN BEGONIACEAE FROM THE WESTERN GHATS OF INDIA

2019 ◽  
Vol 77 (2) ◽  
pp. 251-268 ◽  
Author(s):  
N. Krishna ◽  
S. J. Britto ◽  
S. Thomas ◽  
B. Mani ◽  
A. K. Pradeep ◽  
...  
Keyword(s):  
New Species ◽  
Western Ghats ◽  
Identification Key ◽  
Western Ghats Of India ◽  
Two New Species ◽  
The Western Ghats

Two new species, Begonia bracteolata and Begonia keralensis, are described from the Western Ghats of India. They are placed in the newly created Begonia sect. Flocciferae, along with B. albo-coccinea Hook. and B. floccifera Bedd. Lectotypes are designated for three names within this section. Colour photoplates, illustrations and an identification key to Begonia sect. Flocciferae are also provided.

Two new species of Curculionichthys (Siluriformes: Loricariidae) from the rio Amazonas basin, Brazil

Zootaxa ◽  
2017 ◽  
Vol 4341 (2) ◽  
pp. 258 ◽  
Author(s):  
FÁBIO F. ROXO ◽  
ANGELICA C. DIAS ◽  
GABRIEL S. C. SILVA ◽  
CLAUDIO OLIVEIRA
Keyword(s):  
New Species ◽  
Distal Portion ◽  
The Body ◽  
Caudal Peduncle ◽  
Diagnostic Features ◽  
Lower Lip ◽  
Two New Species ◽  
Dorsal Portion ◽  
In Series ◽  
Lateral Portion

In the present study, we describe two new species of Curculionichthys from rio Tapajós and rio Tocantins basins in Brazil. Both species present all diagnostic features of Curculionichthys. Furthermore, both species C. tukana and C. itaim are distinguished from congeners by the combination of seven characters: (1) a higher number of plates in abdominal lateral plates series; (2) the absence of large conspicuous odontodes forming rows on head and trunk; (3) the anterior profile of the head pointed; (4) a higher number of dentary teeth; (5) the lack of contrasting dark spots at the anterodorsal region of body; (6) the absence of an irregular concentration of chromatophores that entirely cover the anal-fin origin and adjacent region, and distal portion of the first unbranched anal-fin ray; and (7) the presence of odontodes forming aligned rows, more evident in the dorsal portion of head and in the lateral portion of caudal peduncle. Furthermore, C. tukana can be further distinguished from congeners by three characters: (1) the papillae aligned in series that extends from the distal portion of lower lip to dentary; (2) the absence of dark-brown spots scattered over the body; and (3) a higher number of maxillary teeth. The species C. itaim also can be further distinguished from congeners by five characters: (1) the papillae randomly distributed throughout the lower lip; (2) a smaller number of medial plates series on lateral portion of the body following the lateral line; (3) a smaller number of median plates series in abdomen; (4) the absence of dark-brown spots scattered over the body; and (5) the absence of one unpaired platelet on the dorsal portion of the caudal peduncle. 

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