Taxonomic review of the genus Argyrops (Perciformes; Sparidae) with three new species from the Indo-West Pacific

Zootaxa ◽  
2018 ◽  
Vol 4438 (3) ◽  
pp. 401 ◽  
Author(s):  
YUKIO IWATSUKI ◽  
PHILLIP C. HEEMSTRA
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Valid Species ◽  
Nominal Species ◽  
Geographic Variations ◽  
West Pacific ◽  
Dorsal Fin ◽  
The Indian Ocean ◽  
Three New Species ◽  
Fin Spines

The Indo-West Pacific sparid genus Argyrops is reviewed, with four valid species and three new species: A. bleekeri Oshi-ma, 1927, A. filamentosus (Valenciennes, 1830), A. megalommatus (Klunzinger, 1870), A. spinifer (Forsskål, 1775), A. caeruleops n. sp., A. flavops n. sp. and A. notialis n. sp. The above seven species can be differentiated on meristic values, ontogenetic and morphological characters, and coloration. Argyrops bleekeri from the western Pacific and A. notialis n. sp. from Western Australia both have only one rudimentary dorsal-fin spine on the first dorsal pterygiophore (which defines the Argyrops bleekeri complex), while the five other congeners have two rudimentary dorsal-fin spines, both associated with the first dorsal pterygiophore. Argyrops filamentosus, A. megalommatus, and A. caeruleops n. sp. have the 3rd dorsal-fin spine filamentous and longest, the defining character of the A. filamentosus complex. Argyrops spinifer (from the Indian Ocean) and A. flavops n. sp. (from the Middle East to Pakistan, but not the Red Sea and probably rare in the Persian Gulf) differ from other complexes in having 4–6 elongated or filamentous dorsal-fin spines (usually 3rd–6th [four spines] or 3rd–8th [six spines]) in juveniles and subadults, with the first 2 dorsal-fin spines rudimentary, the characteristic of the A. spinifer complex. The above three complexes include the seven Argyrops species that are defined and supported by morphological and color differences, genetic distinctions (partial cytochrome b genes, 1,116 bp), and distribution. The nominal species are discussed, together with several geographic variations of A. spinifer from the Indian Ocean, and a key to the species is provided. 

A revision of the gobiid fish genus Pseudogobius (Teleostei, Gobiidae, Tridentigerinae), with description of seven new species from Australia and South-east Asia

Zootaxa ◽  
2021 ◽  
Vol 4961 (1) ◽  
pp. 1-85
Author(s):  
HELEN K. LARSON ◽  
MICHAEL P. HAMMER
Keyword(s):  
New Species ◽  
Feedback Loop ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Gobiid Fish ◽  
West Pacific ◽  
Close Proximity ◽  
Tropical Areas ◽  
Initial Focus

The tridentigerine genus Pseudogobius is widespread, from temperate to tropical areas of the Indo-west Pacific. A morphological review of the genus was carried out, with the initial focus on South-east Asian and Australian species. There are about 21 nominal species in the genus; however, the type specimens for some nominal species are missing. Our work recognises 15 valid species so far, including seven new species, which are described herein: P. aquilonius n. sp., P. cinctus n. sp., P. eos n. sp., P. hoesei n. sp., P. jeffi n. sp., P. rhizophora n. sp. and P. verticalis n. sp. We also conclude that P. poicilosoma (Bleeker, 1849) is the senior synonym of P. javanicus (Bleeker, 1856). Pseudogobius poicilosoma, P. gastrospilos (Bleeker, 1853) and P. javanicus are accepted here as conspecific, although the types are in poor condition (note that all three names were given to specimens collected within close proximity to each other in coastal Java, Indonesia). A key to valid species is presented. The revision benefited from an adaptive feedback loop with companion genetic analyses, with the most comprehensive data available for the Australian region. Broader preliminary genetic data suggest the potential for recognition of additional cryptic species, with the current study providing a platform for future systematic work. Pseudogobius are a prominent part of estuarine biodiversity in the Indo-west Pacific, and this study helps to highlight the need to better understand the taxonomy and conservation requirements of cryptobenthic fishes. 

New species and records of the genus Syllis Savigny in Lamarck, 1818 (Annelida: Syllidae) from Socotra Archipelago (Indian Ocean)

Zootaxa ◽  
2020 ◽  
Vol 4742 (1) ◽  
pp. 73-88
Author(s):  
YOLANDA LUCAS RODRÍGUEZ ◽  
GUILLERMO SAN MARTÍN ◽  
DIETER FIEGE
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Valid Species ◽  
New Findings ◽  
The Indian Ocean ◽  
Socotra Archipelago ◽  
San Martín ◽  
A New Species

Based on a census of the polychaete fauna of the Socotra Archipelago in the Indian Ocean we report here new findings on the genus Syllis Savigny in Lamarck, 1818. These ten species are newly recorded from this area: Syllis alternata Moore, 1908; Syllis bouvieri Gravier, 1900; Syllis broomensis (Hartmann-Schröder, 1979); Syllis compacta Gravier, 1900; Syllis crassicirrata (Treadwell, 1925); Syllis gerlachi (Hartmann-Schröder, 1960); Syllis hyalina Grube, 1863; Syllis lutea (Hartmann-Schröder, 1960); Syllis schulzi (Hartmann-Schröder, 1960); Syllis ypsiloides Aguado, San Martín & Ten Hove, 2008. Additionally, Syllis qamhiyn sp. nov. is described as a new species, characterized by its conspicuously thick and short dorsal cirri filled with a gelatinous substance and reduced number of compound chaetae from medium to posterior parapodia, with enlarged shafts and short blades which become almost unidentate and do not fuse with shafts. Following an examination of the holotype of S. bouvieri, its status as a valid species and not as synonym of Syllis prolifera Krohn, 1852, as considered by some authors (see Licher 1999) is confirmed, and a redescription is included. 

Taxonomy of the South American genus Pachypops Gill 1861 (Teleostei: Perciformes: Sciaenidae), with the description of a new species

Zootaxa ◽  
2002 ◽  
Vol 26 (1) ◽  
pp. 1 ◽  
Author(s):  
LILIAN CASATTI
Keyword(s):  
New Species ◽  
River Basins ◽  
Junior Synonym ◽  
Valid Species ◽  
Nominal Species ◽  
South American ◽  
The South ◽  
Haemal Spine ◽  
A New Species ◽  
Fin Spines

Pachypops is a South American freshwater sciaenid genus characterized by having two anal-fin spines, three mental barbels, an inferior mouth, a swimbladder with a pair of short appendages anteriorly and a pair of longer appendages projected posteriorly, and the haemal spine of the first caudal distinctly expanded. Three valid Pachypops species are recognized herein. Of the six nominal species previously assigned to Pachypops, two are herein recognized as valid (Perca fourcroi and Micropogon trifilis), two are assigned to other sciaenid genera (Pachypops adspersus and Pachypops cevegei) and two are considered junior synonyms (Corvina biloba and Pachypops camposi). A seventh nominal species, Pachyurus nattereri, formerly considered a valid species of Pachyurus, is determined to be a junior synonym of Pachypops fourcroi, and lectotype and paralectotypes are designated for it. Pachypops fourcroi occurs in the Orinoco, Amazonas, Essequibo, Corantijn, and Approuague River basins, and Pachypops trifilis in rivers of Guyana and middle and lower reaches of the Rio Amazonas basin. A third valid species, Pachypops pigmaeus n. sp., is herein described from tributaries of the Rio Amazonas, Brazil.

scholarly journals Phylogeography of Blue Corals (Genus Heliopora) Across the Indo-West Pacific

2021 ◽  
Vol 8 ◽  
Author(s):  
Hiroki Taninaka ◽  
Davide Maggioni ◽  
Davide Seveso ◽  
Danwei Huang ◽  
Abram Townsend ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Phylogenetic Trees ◽  
Kuroshio Current ◽  
Western Pacific ◽  
Valid Species ◽  
West Pacific ◽  
Malay Archipelago ◽  
The Indian Ocean ◽  
Current Region ◽  
The Kuroshio

Species delimitation of corals is one of the most challenging issues in coral reef ecology and conservation. Morphology can obscure evolutionary relationships, and molecular datasets are consistently revealing greater within-species diversity than currently understood. Most phylogenetic studies, however, have examined narrow geographic areas and phylogeographic expansion is required to obtain more robust interpretations of within- and among- species relationships. In the case of the blue coral Heliopora, there are currently two valid species (H. coerulea and H. hiberniana) as evidenced by integrated genetic and morphological analyses in northwestern Australia. There are also two distinct genetic lineages of H. coerulea in the Kuroshio Current region that are morphologically and reproductively different from each other. Sampling from all Heliopora spp. across the Indo-Pacific is essential to obtain a more complete picture of phylogeographic patterns. To examine phylogenetic relationships within the genus Heliopora, we applied Multiplexed inter simple sequence repeat (ISSR) Genotyping by sequencing (MIG-seq) on > 1287 colonies across the Indo-West Pacific. Maximum likelihood phylogenetic trees indicated the examined Heliopora samples comprise three genetically distinct groups: H. coerulea group, H. hiberniana group, and a new undescribed Heliopora sp. group with further subdivisions within each group. Geographic structuring is evident among the three species with H. hiberniana group found in the Indo-Malay Archipelago and biased toward the Indian Ocean whilst Heliopora sp. was only found in the Kuroshio Current region and Singapore, indicating that this taxon is distributed in the western Pacific and the Indo-Malay Archipelago. Heliopora coerulea has a wider distribution, being across the Indian Ocean and western Pacific. This study highlights the effectiveness of phylogenetic analysis using genome-wide markers and the importance of examining populations across their distribution range to understand localized genetic structure and speciation patterns of corals.

New species of water mites from the Comoros (Acari: Hydrachnidia)

Zootaxa ◽  
2009 ◽  
Vol 2213 (1) ◽  
pp. 47-56
Author(s):  
HARRY SMIT ◽  
VLADIMIR PESIC ◽  
NATHALIE MARY-SASAL
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Water Mites ◽  
The Indian Ocean ◽  
Three New Species

Three new species are described from the Comoros, an archipelago in the Indian Ocean: Teratothyasides scutulatus Smit & Pesic n. sp., Platymamersopsis comoros Smit & Pesic n. sp. and Atractides comorosensis Smit & Pesic n. sp. One species is reported new for the fauna of the Comoros, i.e. Monatractides ventriosa (K. Viets, 1916).

Apseudomorph Tanaidacea from the continental shelf of Angola and Namibia with descriptions of three new species

Zootaxa ◽  
2012 ◽  
Vol 3583 (1) ◽  
pp. 31 ◽  
Author(s):  
RALF BOCHERT
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
West Africa ◽  
Continental Shelf ◽  
Morphological Features ◽  
The Other ◽  
Investigation Area ◽  
The Indian Ocean ◽  
Three New Species ◽  
Southwest Africa

Four apseudomorph tanaidaceans are recorded from benthos of the shelf off Angola and off northern Namibia (SouthWest Africa). Of these, three are new to science, one each in the genera Hemikalliapseudes, Calozodion andApseudopsis. The genus Hemikalliapseudes now contains four species, all described from West Africa (Angola andMauretania). The new species Hemikalliapseudes sebastiani sp. nov. is separated from other species of this genus byfeatures of several appendages, and the shape of the cephalothorax, pereonites and telson. The genus Calozodion ismainly distributed in the Atlantic and also in the Indian Ocean. Calozodion dominiki sp. nov. is the tenth representativeof the genus and is readily distinguished from all others in that the cheliped propodus of the male has only smallprocesses proximo-ventrally. The new species was widely distributed in the investigation area. Apseudopsis cuanzanussp. nov. is a new member of this species-rich and widely-distributed genus. It differs from the other species of this genusby a combination of several morphological features, including the absence of a dorsodistal spine on the pereopod 1merus, the lack of anterolateral spines on the pereonites, the shape of rostrum and by the absence of plumose setae on pereopod six basis.

scholarly journals XXX.—On a New Siphonogorgid Genus Cactogorgia; with Descriptions of Three New Species.

1907 ◽  
Vol 45 (3) ◽  
pp. 829-836
Author(s):  
James J. Simpson
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
The Indian Ocean ◽  
Three New Species

Among the numerous littoral Alcyonarians collected by the Royal Indian Marine survey ship Investigator in the Indian Ocean there are five small Siphonogorgids of exceptional interest and apparently new to science. As some time must elapse before the publication of the complete memoir on the Indian Ocean collection, it seems advisable to make a separate report on these new forms. In so doing, I must acknowledge my indebtedness to Professor A. Alcock, F.R.S., and Professor J. Arthur Thomson, M.A., F.R.S.E., University of Aberdeen, for the opportunity of studying these interesting forms, and to the latter also for much kind advice and encouragement.

Bythaelurus vivaldii, a new deep-water catshark (Carcharhiniformes, Scyliorhinidae) from the northwestern Indian Ocean off Somalia

Zootaxa ◽  
2017 ◽  
Vol 4263 (1) ◽  
pp. 97 ◽  
Author(s):  
SIMON WEIGMANN ◽  
CARINA JULIA KASCHNER
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Deep Water ◽  
Western Indian Ocean ◽  
Valid Species ◽  
Caudal Fin ◽  
Virtual Absence ◽  
Dorsal Fin ◽  
Dermal Denticle ◽  
Fin Length

A new very small deep-water catshark, Bythaelurus vivaldii, is described based on two female specimens caught off Somalia in the northwestern Indian Ocean during the German ‘Valdivia’ expedition in 1899. It is morphologically closest to the recently described B. bachi, which is the only other Bythaelurus species in the western Indian Ocean that shares a stout body of large specimens and the presence of oral papillae. It further resembles B. vivaldii in the broad mouth and broad posterior head, but differs in the presence of composite oral papillae and a higher diversity in dermal denticle morphology. Additionally, the new species differs from all congeners in the western Indian Ocean in a larger pre-second dorsal fin length, a longer head, a larger interdorsal space, a larger intergill length, a longer pectoral-fin posterior margin, a shorter caudal fin, an intermediate caudal fin preventral margin, and a larger internarial width. Furthermore, the second dorsal fin of the new species is smaller than in its congeners in the western Indian Ocean except for B. lutarius, which is easily distinguished by the slender body and virtual absence of oral papillae, as well as the aforementioned further characters. An updated key to all valid species of Bythaelurus is provided.

New species of Chimaera (Chondrichthyes: Holocephali: Chimaeriformes: Chimaeridae) from the Southwestern Indian Ocean

Zootaxa ◽  
2017 ◽  
Vol 4312 (1) ◽  
pp. 1 ◽  
Author(s):  
PAUL J. CLERKIN ◽  
DAVID A. EBERT ◽  
JENNY M. KEMPER
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Large Body ◽  
First Record ◽  
Ventral Surface ◽  
Body Color ◽  
Long Tail ◽  
Dorsal Fin ◽  
Three New Species ◽  
Southwestern Indian Ocean

Three new species of Chimaera are described from the Southwestern Indian Ocean. Chimaera willwatchi sp. nov. is distinguished by its large body, blocky head with square snout, well-defined suborbital ridges, and a strong dorsal spine exceeding first dorsal apex; body brown-purple in color, slight iridescent sheen, heavily mottled around mouth and ventral surface, posterior edge of pelvic fins and first dorsal fin with prominent white margin, and anterior edge of second dorsal fin with white margin. Chimaera didierae sp. nov. can be distinguished by its light tan body color, slender body, short trunk, long tail, relatively robust spine, very small unpaired fins, and extremely deciduous skin. Chimaera buccanigella sp. nov. is distinguished by its light tan body color, stocky body, short trunk, tapering rapidly into a long tail, long, very straight spine, skin not deciduous. The three Chimaera species were collected from seamounts of Walters Shoal, the Madagascar Ridge, and the Southwestern Indian Ridge in an area within 34o30’S–44o05’E and 39o30’S–58o15’E. This is the first record of the genus in the Southwestern Indian Ocean, and brings the global total to 19 species. The new species presented here are distinguishable from their congeners by a combination of coloration, morphology, meristic, and structure of the mitochondrial NADH2 gene. 

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